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Lozon L, Ramadan WS, Kawaf RR, Al-Shihabi AM, El-Awady R. Decoding cell death signalling: Impact on the response of breast cancer cells to approved therapies. Life Sci 2024; 342:122525. [PMID: 38423171 DOI: 10.1016/j.lfs.2024.122525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 02/04/2024] [Accepted: 02/21/2024] [Indexed: 03/02/2024]
Abstract
Breast cancer is a principal cause of cancer-related mortality in female worldwide. While many approved therapies have shown promising outcomes in treating breast cancer, understanding the intricate signalling pathways controlling cell death is crucial for optimizing the treatment outcome. A growing body of evidence has unveiled the aberrations in multiple cell death pathways across diverse cancer types, highlighting these pathways as appealing targets for therapeutic interventions. In this review, we provide a comprehensive overview of the current state of knowledge on the cell death signalling mechanisms with a particular focus on their impact on the response of breast cancer cells to approved therapies. Additionally, we discuss the potentials of combination therapies that exploit the synergy between approved drugs and therapeutic agents targeting modulators of cell death pathways.
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Affiliation(s)
- Lama Lozon
- College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates; Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Wafaa S Ramadan
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Rawan R Kawaf
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Aya M Al-Shihabi
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Raafat El-Awady
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates.
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2
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Iwase T, Wang X, Thi Hanh Phi L, Sridhar N, Ueno NT, Lee J. Advances in targets in inflammatory breast cancer. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2024; 384:125-152. [PMID: 38637096 DOI: 10.1016/bs.ircmb.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Affiliation(s)
- Toshiaki Iwase
- Section of Translational Breast Cancer Research, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; University of Hawaii Cancer Center, Honolulu, HI, United States.
| | - Xiaoping Wang
- Section of Translational Breast Cancer Research, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Lan Thi Hanh Phi
- Section of Translational Breast Cancer Research, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Nithya Sridhar
- Section of Translational Breast Cancer Research, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Naoto T Ueno
- Section of Translational Breast Cancer Research, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; University of Hawaii Cancer Center, Honolulu, HI, United States
| | - Jangsoon Lee
- Section of Translational Breast Cancer Research, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
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Ludwig ML, Michmerhuizen NL, Wang J, Birkeland AC, Majchrowski BK, Nimmagadda S, Zhai J, Bhangale A, Kulkarni A, Jiang H, Swiecicki PL, Brenner JC. Multi-kinase compensation rescues EGFR knockout in a cell line model of head and neck squamous cell carcinoma. Arch Oral Biol 2023; 156:105822. [PMID: 37844343 PMCID: PMC11209876 DOI: 10.1016/j.archoralbio.2023.105822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/04/2023] [Accepted: 10/08/2023] [Indexed: 10/18/2023]
Abstract
BACKGROUND Head and neck squamous cell carcinoma (HNSCC) is a debilitating disease with poor survival rates. While the epidermal growth factor receptor (EGFR)-targeting antibody Cetuximab is approved for treatment, responses are limited and the molecular mechanisms driving resistance remain incompletely understood. METHODS To better understand how cells survive without EGFR activity, we developed an EGFR knockout derivative of the UM-SCC-92 cell line using CRISPR/Cas9 technology. We then characterized changes to the transcriptome with RNAseq and changes in response to kinase inhibitors with resazurin cell viability assays. Finally, we tested if inhibitors with activity in the EGFR knockout model also had synergistic activity in combination with EGFR inhibitors in either wild type UM-SCC-92 cells or a known Cetuximab-resistant model. RESULTS Functional and molecular analysis showed that knockout cells had decreased cell proliferation, upregulation of FGFR1 expression, and an enhanced mesenchymal phenotype. In fact, expression of common EMT genes including VIM, SNAIL1, ZEB1 and TWIST1 were all upregulated in the EGFR knockout. Surprisingly, EGFR knockout cells were resistant to FGFR inhibitor monotherapies, but sensitive to combinations of FGFR and either XIAP or IGF-1R inhibitors. Accordingly, both wild type UM-SCC-92 and Cetuximab-resistant UM-SCC-104 cells with were sensitive to combined inhibition of EGFR, FGFR and either XIAP or IGF-1R. CONCLUSIONS These data offer insights into EGFR inhibitor resistance and show that resistance to EGFR knockout likely occurs through a complex network of kinases. Future studies of cetuximab-resistant HNSCC tumors are warranted to determine if this EMT phenotype and/or multi-kinase resistance is observed in patients.
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Affiliation(s)
- Megan L Ludwig
- Department of Otolaryngology - Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States; Program in Cellular and Molecular Biology, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Nicole L Michmerhuizen
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI 48109, United States; Department of Otolaryngology - Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Jiayu Wang
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI 48109, United States; Department of Otolaryngology - Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Andrew C Birkeland
- Department of Otolaryngology - Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Behirda K Majchrowski
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Sai Nimmagadda
- Department of Otolaryngology - Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Jingyi Zhai
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI 48109, United States
| | - Apurva Bhangale
- Department of Otolaryngology - Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Aditi Kulkarni
- Department of Otolaryngology - Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Hui Jiang
- Rogel Cancer Center University of Michigan Medical School, Ann Arbor, MI 48109, United States; Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI 48109, United States
| | - Paul L Swiecicki
- Department of Hematology Oncology, University of Michigan Medical School, Ann Arbor, MI 48109, United States; Rogel Cancer Center University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - J Chad Brenner
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI 48109, United States; Program in Cellular and Molecular Biology, University of Michigan Medical School, Ann Arbor, MI 48109, United States; Rogel Cancer Center University of Michigan Medical School, Ann Arbor, MI 48109, United States.
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Zhang H, Jin B, Liu L, Li H, Zheng X, Li M, He R, Wang K. Glutathione Might Attenuate Arsenic-Induced Liver Injury by Modulating the Foxa2-XIAP Axis to Reduce Oxidative Stress and Mitochondrial Apoptosis. Biol Trace Elem Res 2023; 201:5201-5212. [PMID: 36689145 DOI: 10.1007/s12011-023-03577-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 01/17/2023] [Indexed: 01/24/2023]
Abstract
Arsenic (AS) is a metalloid element that widely exists and can cause different degrees of liver damage. The molecular mechanism of arsenic-induced liver injury has yet to be fully elucidated. Clinically, glutathione (GSH) is often used as an antidote for heavy metal poisoning and hepatoprotective drugs. However, the hepatoprotective effect of glutathione remains unknown in arsenic-induced liver injury. The regulatory relationship between Foxa2 and XIAP may play an important role in mitochondrial survival and death. Therefore, we took Foxa2-XIAP as the axis to explore the protective mechanism of GSH. In this study, we first established a mouse model of chronic arsenic exposure and examined liver function as reflected by quantitative parameters such as aspartate aminotransferase and alanine aminotransferase. Also, redox parameters in the liver were measured, including malondialdehyde, superoxide dismutase, 8-hydroxy-2'-deoxyguanosin, and glutathione peroxidase. RT-qPCR and western-blotting were used to detect the levels of related genes and proteins, such as Foxa2, XIAP, Smac, Bax, Bcl2, Caspase9, and Caspase3. Subsequently, GSH was administered at the same time as high arsenic exposure, and changes in the above parameters were observed. After a comprehensive analysis of the above results, we demonstrate that GSH treatment alleviates arsenic-induced oxidative stress and inhibits the mitochondrial pathway of apoptosis, which can be regulated through the Foxa2 and XIAP axis. The present study would be helpful in elucidating the molecular mechanism of arsenic-induced liver injury and identifying a new potential therapeutic target. And we also provided new theoretical support for glutathione in the treatment of liver damage caused by arsenic.
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Affiliation(s)
- Hua Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- National Health Commission & Education Bureau of Heilongjiang Province, Key Laboratory of Etiology and Epidemiology, Harbin Medical University, (23618504)150081, Harbin, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, China
| | - Baiming Jin
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- Department of Preventive Medicine, Qiqihar Medical University, Qiqihar, 161006, China
| | - Lele Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- National Health Commission & Education Bureau of Heilongjiang Province, Key Laboratory of Etiology and Epidemiology, Harbin Medical University, (23618504)150081, Harbin, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, China
| | - Haonan Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- National Health Commission & Education Bureau of Heilongjiang Province, Key Laboratory of Etiology and Epidemiology, Harbin Medical University, (23618504)150081, Harbin, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, China
| | - Xiujuan Zheng
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- National Health Commission & Education Bureau of Heilongjiang Province, Key Laboratory of Etiology and Epidemiology, Harbin Medical University, (23618504)150081, Harbin, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, China
| | - Mingqi Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- National Health Commission & Education Bureau of Heilongjiang Province, Key Laboratory of Etiology and Epidemiology, Harbin Medical University, (23618504)150081, Harbin, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, China
| | - Rui He
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- National Health Commission & Education Bureau of Heilongjiang Province, Key Laboratory of Etiology and Epidemiology, Harbin Medical University, (23618504)150081, Harbin, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, China
| | - Kewei Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China.
- National Health Commission & Education Bureau of Heilongjiang Province, Key Laboratory of Etiology and Epidemiology, Harbin Medical University, (23618504)150081, Harbin, China.
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, China.
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Rezaei R, Moazamian E, Montazeri-Najafabady N. Parasporin-4, a novel apoptosis inducer of breast cancer cells produced by Bacillus thuringiensis. Mol Biol Rep 2023; 50:4469-4480. [PMID: 37014571 DOI: 10.1007/s11033-023-08378-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/06/2023] [Indexed: 04/05/2023]
Abstract
BACKGROUND Parasporin (PS) proteins have cytocidal activity preferential for various human malignant cells. The purpose of this investigation was to see if the PS separated from B. thuringiensis strain E8 isolate had any particular cytotoxicity against breast cancer. METHODS AND RESULTS The extracted spores-crystal proteins were solubilized and digested with proteinase K. Cytotoxicity effects were analysed by MTT assay. Caspases activities were measured using ELISA. SDS-PAGE analysis was performed for determination of molecular weight of Cry protein. Identification of extracted proteins function was evaluated by MALDI-TOF MS analysis. Breast cancer cells line (MCF-7) was highly susceptible to 1 mg/mL PS and showed apoptosis characteristics, but it has no effects on the normal cells (HEK293). Apoptosis evaluation showed that caspases 1, 3, 9 and BAX were remarkably up-regulated in cancer cells, indicating the intrinsic pathway activation in these cells. PS Size was determined using SDS-PAGE in E8 isolate as 34 kDa and a 25 kDa digested peptide was identified as PS4. The function of PS4 was reported as an ABC-transporter by spectrometry. CONCLUSION The data of the present study show that PS4 is a selective cytotoxic protein against breast cancer and a molecule with a lot of potentials for next researches.
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Affiliation(s)
- Roya Rezaei
- Department of Microbiology, College of Sciences, Agriculture and Modern Technology, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | - Elham Moazamian
- Department of Microbiology, College of Sciences, Agriculture and Modern Technology, Shiraz Branch, Islamic Azad University, Shiraz, Iran.
| | - Nima Montazeri-Najafabady
- Shiraz Endocrine and Metabolism Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Michmerhuizen NL, Ludwig ML, Birkeland AC, Nimmagadda S, Zhai J, Wang J, Jewell BM, Genouw D, Remer L, Kim D, Foltin SK, Bhangale A, Kulkarni A, Bradford CR, Swiecicki PL, Carey TE, Jiang H, Brenner JC. Small molecule profiling to define synergistic EGFR inhibitor combinations in head and neck squamous cell carcinoma. Head Neck 2022; 44:1192-1205. [PMID: 35224804 PMCID: PMC8986607 DOI: 10.1002/hed.27018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/18/2021] [Accepted: 02/17/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Head and neck squamous cell carcinoma (HNSCC) is a debilitating disease with poor survival. Although epidermal growth factor receptor (EGFR)-targeting antibody cetuximab improves survival in some settings, responses are limited suggesting that alternative approaches are needed. METHODS We performed a high throughput drug screen to identify EGFR inhibitor-based synergistic combinations of clinically advanced inhibitors in models resistant to EGFR inhibitor monotherapies, and then performed downstream validation experiments on prioritized synergistic combinations. RESULTS From our screen, we re-discovered known synergistic EGFR inhibitor combinations with FGFR or IGF-1R inhibitors that were broadly effective and also discovered novel synergistic combinations with XIAP inhibitor and DNMT inhibitors that were effective in only a subset of models. CONCLUSIONS Conceptually, our data identify novel synergistic combinations that warrant evaluation in future studies, and suggest that some combinations, although highly synergistic, will require parallel companion diagnostic development to be effectively advanced in patients.
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Affiliation(s)
- Nicole L. Michmerhuizen
- Department of PharmacologyUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Megan L. Ludwig
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Program in Cellular and Molecular BiologyUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Andrew C. Birkeland
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Sai Nimmagadda
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Jingyi Zhai
- Department of BiostatisticsUniversity of Michigan School of Public HealthAnn ArborMichiganUSA
| | - Jiayu Wang
- Department of PharmacologyUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Brittany M. Jewell
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Dylan Genouw
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Lindsay Remer
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Daniel Kim
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Susan K. Foltin
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Apurva Bhangale
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Aditi Kulkarni
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Carol R. Bradford
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Rogel Cancer CenterUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Paul L. Swiecicki
- Department of Hematology and OncologyUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Rogel Cancer CenterUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Thomas E. Carey
- Department of PharmacologyUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Rogel Cancer CenterUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - Hui Jiang
- Department of BiostatisticsUniversity of Michigan School of Public HealthAnn ArborMichiganUSA
- Rogel Cancer CenterUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
| | - J. Chad Brenner
- Department of PharmacologyUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Department of Otolaryngology—Head and Neck SurgeryUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Program in Cellular and Molecular BiologyUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
- Rogel Cancer CenterUniversity of Michigan Medical SchoolAnn ArborMichiganUSA
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Shanmugam MK, Sethi G. Molecular mechanisms of cell death. MECHANISMS OF CELL DEATH AND OPPORTUNITIES FOR THERAPEUTIC DEVELOPMENT 2022:65-92. [DOI: 10.1016/b978-0-12-814208-0.00002-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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Townsend PA, Kozhevnikova MV, Cexus ONF, Zamyatnin AA, Soond SM. BH3-mimetics: recent developments in cancer therapy. J Exp Clin Cancer Res 2021; 40:355. [PMID: 34753495 PMCID: PMC8576916 DOI: 10.1186/s13046-021-02157-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/26/2021] [Indexed: 01/11/2023] Open
Abstract
The hopeful outcomes from 30 years of research in BH3-mimetics have indeed served a number of solid paradigms for targeting intermediates from the apoptosis pathway in a variety of diseased states. Not only have such rational approaches in drug design yielded several key therapeutics, such outputs have also offered insights into the integrated mechanistic aspects of basic and clinical research at the genetics level for the future. In no other area of medical research have the effects of such work been felt, than in cancer research, through targeting the BAX-Bcl-2 protein-protein interactions. With these promising outputs in mind, several mimetics, and their potential therapeutic applications, have also been developed for several other pathological conditions, such as cardiovascular disease and tissue fibrosis, thus highlighting the universal importance of the intrinsic arm of the apoptosis pathway and its input to general tissue homeostasis. Considering such recent developments, and in a field that has generated so much scientific interest, we take stock of how the broadening area of BH3-mimetics has developed and diversified, with a focus on their uses in single and combined cancer treatment regimens and recently explored therapeutic delivery methods that may aid the development of future therapeutics of this nature.
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Affiliation(s)
- Paul A Townsend
- University of Surrey, Guildford, UK.
- Sechenov First Moscow State Medical University, Moscow, Russian Federation.
- University of Manchester, Manchester, UK.
| | - Maria V Kozhevnikova
- University of Surrey, Guildford, UK
- Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | | | - Andrey A Zamyatnin
- University of Surrey, Guildford, UK
- Sechenov First Moscow State Medical University, Moscow, Russian Federation
- Lomonosov Moscow State University, Moscow, Russian Federation
- Sirius University of Science and Technology, Sochi, Russian Federation
| | - Surinder M Soond
- University of Surrey, Guildford, UK.
- Sechenov First Moscow State Medical University, Moscow, Russian Federation.
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Filippova EA, Fridman MV, Burdennyy AM, Loginov VI, Pronina IV, Lukina SS, Dmitriev AA, Braga EA. Long Noncoding RNA GAS5 in Breast Cancer: Epigenetic Mechanisms and Biological Functions. Int J Mol Sci 2021; 22:ijms22136810. [PMID: 34202777 PMCID: PMC8267719 DOI: 10.3390/ijms22136810] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/15/2021] [Accepted: 06/18/2021] [Indexed: 12/12/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) have been identified as contributors to the development and progression of cancer through various functions and mechanisms. LncRNA GAS5 is downregulated in multiple cancers and acts as a tumor suppressor in breast cancer. GAS5 interacts with various proteins (e.g., E2F1, EZH2, and YAP), DNA (e.g., the insulin receptor promoter), and various microRNAs (miRNAs). In breast cancer, GAS5 binds with miR-21, miR-222, miR-221-3p, miR-196a-5p, and miR-378a-5p that indicates the presence of several elements for miRNA binding (MREs) in GAS5. Mediated by the listed miRNAs, GAS5 is involved in the upregulation of a number of mRNAs of suppressor proteins such as PTEN, PDCD4, DKK2, FOXO1, and SUFU. Furthermore, the aberrant promoter methylation is involved in the regulation of GAS5 gene expression in triple-negative breast cancer and some other carcinomas. GAS5 can stimulate apoptosis in breast cancer via diverse pathways, including cell death receptors and mitochondrial signaling pathways. GAS5 is also a key player in the regulation of some crucial signal pathways in breast cancer, such as PI3K/AKT/mTOR, Wnt/β-catenin, and NF-κB signaling. Through epigenetic and other mechanisms, GAS5 can increase sensitivity to multiple drugs and improve prognosis. GAS5 is thus a promising target in the treatment of breast cancer patients.
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Affiliation(s)
- Elena A. Filippova
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia; (E.A.F.); (A.M.B.); (V.I.L.); (I.V.P.); (S.S.L.)
| | - Marina V. Fridman
- Vavilov Institute of General Genetics, Russian Academy of Sciences, 119991 Moscow, Russia;
| | - Alexey M. Burdennyy
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia; (E.A.F.); (A.M.B.); (V.I.L.); (I.V.P.); (S.S.L.)
| | - Vitaly I. Loginov
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia; (E.A.F.); (A.M.B.); (V.I.L.); (I.V.P.); (S.S.L.)
| | - Irina V. Pronina
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia; (E.A.F.); (A.M.B.); (V.I.L.); (I.V.P.); (S.S.L.)
| | - Svetlana S. Lukina
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia; (E.A.F.); (A.M.B.); (V.I.L.); (I.V.P.); (S.S.L.)
| | - Alexey A. Dmitriev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia;
| | - Eleonora A. Braga
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia; (E.A.F.); (A.M.B.); (V.I.L.); (I.V.P.); (S.S.L.)
- Correspondence:
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10
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XIAP's Profile in Human Cancer. Biomolecules 2020; 10:biom10111493. [PMID: 33138314 PMCID: PMC7692959 DOI: 10.3390/biom10111493] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/20/2020] [Accepted: 10/25/2020] [Indexed: 12/17/2022] Open
Abstract
XIAP, the X-linked inhibitor of apoptosis protein, regulates cell death signaling pathways through binding and inhibiting caspases. Mounting experimental research associated with XIAP has shown it to be a master regulator of cell death not only in apoptosis, but also in autophagy and necroptosis. As a vital decider on cell survival, XIAP is involved in the regulation of cancer initiation, promotion and progression. XIAP up-regulation occurs in many human diseases, resulting in a series of undesired effects such as raising the cellular tolerance to genetic lesions, inflammation and cytotoxicity. Hence, anti-tumor drugs targeting XIAP have become an important focus for cancer therapy research. RNA-XIAP interaction is a focus, which has enriched the general profile of XIAP regulation in human cancer. In this review, the basic functions of XIAP, its regulatory role in cancer, anti-XIAP drugs and recent findings about RNA-XIAP interactions are discussed.
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Zhao XY, Wang XY, Wei QY, Xu YM, Lau ATY. Potency and Selectivity of SMAC/DIABLO Mimetics in Solid Tumor Therapy. Cells 2020; 9:cells9041012. [PMID: 32325691 PMCID: PMC7226512 DOI: 10.3390/cells9041012] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 02/05/2023] Open
Abstract
Aiming to promote cancer cell apoptosis is a mainstream strategy of cancer therapy. The second mitochondria-derived activator of caspase (SMAC)/direct inhibitor of apoptosis protein (IAP)-binding protein with low pI (DIABLO) protein is an essential and endogenous antagonist of inhibitor of apoptosis proteins (IAPs). SMAC mimetics (SMs) are a series of synthetically chemical compounds. Via database analysis and literature searching, we summarize the potential mechanisms of endogenous SMAC inefficiency, degradation, mutation, releasing blockage, and depression. We review the development of SMs, as well as preclinical and clinical outcomes of SMs in solid tumor treatment, and we analyze their strengths, weaknesses, opportunities, and threats from our point of view. We also highlight several questions in need of further investigation.
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Affiliation(s)
| | | | | | - Yan-Ming Xu
- Correspondence: (Y.-M.X.); (A.T.Y.L.); Tel.: +86-754-8890-0437 (Y.-M.X.); +86-754-8853-0052 (A.T.Y.L.)
| | - Andy T. Y. Lau
- Correspondence: (Y.-M.X.); (A.T.Y.L.); Tel.: +86-754-8890-0437 (Y.-M.X.); +86-754-8853-0052 (A.T.Y.L.)
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12
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Ahmad B, Khan S, Liu Y, Xue M, Nabi G, Kumar S, Alshwmi M, Qarluq AW. Molecular Mechanisms of Anticancer Activities of Puerarin. Cancer Manag Res 2020; 12:79-90. [PMID: 32021425 PMCID: PMC6956866 DOI: 10.2147/cmar.s233567] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 12/16/2019] [Indexed: 12/12/2022] Open
Abstract
Medicinal plants are a vital source of natural products (NPs) that can cure cancer through modulation of different pathways, including oxidative stress, extrinsic and intrinsic apoptosis, cell cycle, inflammation, NF-kB, PI3K/AKT/mTOR, AMPK (JNK), MEK/ERK (Raf)-MEK-ERK and autophagy. Puerarin (Pue), an important NP belonging to the isoflavone glycoside group, is derived from Pueraria lobata (Willd.) Ohwi, Pueraria thomsonii Benth, and Pueraria tuberosa (Willd.). This NP was approved by the Chinese Ministry of Health for the treatment of different diseases in 1993, but it was also later reported to exhibit anticancer activity. Pue causes cancer cells death through modulation of different mechanisms including oxidative stress, intrinsic and extrinsic, Survivin and XIAP, PI3K/AKT/mTOR, Ras-Raf-MEK-ERK, JNK, cell cycle, AMPK, NF-kB, inflammation and autophagy pathways. Therefore, this review compiles for the first time the studies about the anticancer mechanism of Pue and provides comprehensive information about the anticancer effects of Pue. This review may serve as a basis for future research and clinical treatment.
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Affiliation(s)
- Bashir Ahmad
- Department of Pathology and Pathophysiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Suliman Khan
- The Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.,Henan Medical Key Laboratory of Translational Cerebrovascular Diseases, Zhengzhou, People's Republic of China
| | - Yang Liu
- The Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.,Henan Medical Key Laboratory of Translational Cerebrovascular Diseases, Zhengzhou, People's Republic of China
| | - Mengzhou Xue
- The Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.,Henan Medical Key Laboratory of Translational Cerebrovascular Diseases, Zhengzhou, People's Republic of China
| | - Ghulam Nabi
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, People's Republic of China
| | - Sunjeet Kumar
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China
| | - Mohammed Alshwmi
- Department of Clinical Laboratory, The First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Abdul Wakeel Qarluq
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
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13
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XIAP as a Target of New Small Organic Natural Molecules Inducing Human Cancer Cell Death. Cancers (Basel) 2019; 11:cancers11091336. [PMID: 31505859 PMCID: PMC6770071 DOI: 10.3390/cancers11091336] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 09/04/2019] [Indexed: 12/11/2022] Open
Abstract
X-linked inhibitor of apoptosis protein (XIAP) is an emerging crucial therapeutic target in cancer. We report on the discovery and characterisation of small organic molecules from Piper genus plants exhibiting XIAP antagonism, namely erioquinol, a quinol substituted in the 4-position with an alkenyl group and the alkenylphenols eriopodols A–C. Another isolated compound was originally identified as gibbilimbol B. Erioquinol was the most potent inhibitor of human cancer cell viability when compared with gibbilimbol B and eriopodol A was listed as intermediate. Gibbilimbol B and eriopodol A induced apoptosis through mitochondrial permeabilisation and caspase activation while erioquinol acted on cell fate via caspase-independent/non-apoptotic mechanisms, likely involving mitochondrial dysfunctions and aberrant generation of reactive oxygen species. In silico modelling and molecular approaches suggested that all molecules inhibit XIAP by binding to XIAP-baculoviral IAP repeat domain. This demonstrates a novel aspect of XIAP as a key determinant of tumour control, at the molecular crossroad of caspase-dependent/independent cell death pathway and indicates molecular aspects to develop tumour-effective XIAP antagonists.
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14
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Overexpression of Smac by an Armed Vesicular Stomatitis Virus Overcomes Tumor Resistance. MOLECULAR THERAPY-ONCOLYTICS 2019; 14:188-195. [PMID: 31312717 PMCID: PMC6610632 DOI: 10.1016/j.omto.2019.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 05/15/2019] [Indexed: 01/04/2023]
Abstract
Despite reports of successful clinical cases, many tumors appear to resist infection by oncolytic viruses (OVs). To circumvent this problem, an armed vesicular stomatitis virus was constructed by inserting a transgene to express Smac/DIABLO during virus infection (VSV-S). Endogenous Smac in HeLa cells was diminished during wtVSV infection, whereas the Smac level was enhanced during VSV-S infection. Apoptosis was readily induced by VSV-S, but not wtVSV, infection. More importantly, the tumor volume was reduced to a larger extent when xenografts of 4T1 cells in BALB/c mice and OV-resistant T-47D cells in nude mice were intratumorally injected with VSV-S. VSV-S represents a novel mechanism to overcome tumor resistance, resulting in more significant tumor regression due to enhanced apoptosis.
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15
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Ohoka N, Ujikawa O, Shimokawa K, Sameshima T, Shibata N, Hattori T, Nara H, Cho N, Naito M. Different Degradation Mechanisms of Inhibitor of Apoptosis Proteins (IAPs) by the Specific and Nongenetic IAP-Dependent Protein Eraser (SNIPER). Chem Pharm Bull (Tokyo) 2019; 67:203-209. [DOI: 10.1248/cpb.c18-00567] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Nobumichi Ohoka
- Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences
| | - Osamu Ujikawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Co., Ltd
| | | | - Tomoya Sameshima
- Pharmaceutical Research Division, Takeda Pharmaceutical Co., Ltd
| | - Norihito Shibata
- Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences
| | - Takayuki Hattori
- Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences
| | - Hiroshi Nara
- Pharmaceutical Research Division, Takeda Pharmaceutical Co., Ltd
| | - Nobuo Cho
- Pharmaceutical Research Division, Takeda Pharmaceutical Co., Ltd
| | - Mikihiko Naito
- Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences
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16
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Nikkhoo A, Rostami N, Hojjat-Farsangi M, Azizi G, Yousefi B, Ghalamfarsa G, Jadidi-Niaragh F. Smac mimetics as novel promising modulators of apoptosis in the treatment of breast cancer. J Cell Biochem 2018; 120:9300-9314. [PMID: 30506843 DOI: 10.1002/jcb.28205] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 11/15/2018] [Indexed: 12/11/2022]
Abstract
Breast cancer is the most prevalent cancer in women. Despite improvements in treatment, the rate of breast cancer-related deaths is still high, and this issue needs further, accurate investigations. Although several treatment options are available, none of them are efficient for complete remission, particularly in advanced stages of the disease. It is known that cancerous cells have dysregulated apoptosis-related pathways, by which they can remain alive for a long time, expand freely, and escape from apoptosis-inducing drugs or antitumor immune responses. Therefore, modulation of apoptosis resistance in cancer cells may be an efficient strategy to overcome current problems faced in the development of immunotherapeutic approaches for the treatment of breast cancer. The inhibitors of apoptosis protein (IAPs) are important targets for cancer therapy because it has been shown that these molecules are overexpressed and highly active in various cancer cells and suppress apoptosis process in malignant cells by blockage of caspase proteins. There is evidence of Smac mimetics efficacy as a single agent; however, recent studies have indicated the efficacy of current anticancer immunotherapeutic approaches when combined with Smac mimetics, which are potent inhibitors of IAPs and synthesized mimicking Smac/Diablo molecules. In this review, we are going to discuss the efficacy of treatment of breast cancer by Smac mimetics alone or in combination with other therapeutics.
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Affiliation(s)
- Afshin Nikkhoo
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Narges Rostami
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hojjat-Farsangi
- Department of Oncology-Pathology, Immune and Gene therapy Lab, Cancer Center Karolinska (CCK), Karolinska University Hospital Solna and Karolinska Institute, Stockholm, Sweden.,Department of Immunology, School of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Gholamreza Azizi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Bahman Yousefi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ghasem Ghalamfarsa
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Farhad Jadidi-Niaragh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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17
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Eustace AJ, Conlon NT, McDermott MSJ, Browne BC, O'Leary P, Holmes FA, Espina V, Liotta LA, O'Shaughnessy J, Gallagher C, O'Driscoll L, Rani S, Madden SF, O'Brien NA, Ginther C, Slamon D, Walsh N, Gallagher WM, Zagozdzon R, Watson WR, O'Donovan N, Crown J. Development of acquired resistance to lapatinib may sensitise HER2-positive breast cancer cells to apoptosis induction by obatoclax and TRAIL. BMC Cancer 2018; 18:965. [PMID: 30305055 PMCID: PMC6180577 DOI: 10.1186/s12885-018-4852-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 09/24/2018] [Indexed: 12/30/2022] Open
Abstract
Background Lapatinib has clinical efficacy in the treatment of trastuzumab-refractory HER2-positive breast cancer. However, a significant proportion of patients develop progressive disease due to acquired resistance to the drug. Induction of apoptotic cell death is a key mechanism of action of lapatinib in HER2-positive breast cancer cells. Methods We examined alterations in regulation of the intrinsic and extrinsic apoptosis pathways in cell line models of acquired lapatinib resistance both in vitro and in patient samples from the NCT01485926 clinical trial, and investigated potential strategies to exploit alterations in apoptosis signalling to overcome lapatinib resistance in HER2-positive breast cancer. Results In this study, we examined two cell lines models of acquired lapatinib resistance (SKBR3-L and HCC1954-L) and showed that lapatinib does not induce apoptosis in these cells. We identified alterations in members of the BCL-2 family of proteins, in particular MCL-1 and BAX, which may play a role in resistance to lapatinib. We tested the therapeutic inhibitor obatoclax, which targets MCL-1. Both SKBR3-L and HCC1954-L cells showed greater sensitivity to obatoclax-induced apoptosis than parental cells. Interestingly, we also found that the development of acquired resistance to lapatinib resulted in acquired sensitivity to TRAIL in SKBR3-L cells. Sensitivity to TRAIL in the SKBR3-L cells was associated with reduced phosphorylation of AKT, increased expression of FOXO3a and decreased expression of c-FLIP. In SKBR3-L cells, TRAIL treatment caused activation of caspase 8, caspase 9 and caspase 3/7. In a second resistant model, HCC1954-L cells, p-AKT levels were not decreased and these cells did not show enhanced sensitivity to TRAIL. Furthermore, combining obatoclax with TRAIL improved response in SKBR3-L cells but not in HCC1954-L cells. Conclusions Our findings highlight the possibility of targeting altered apoptotic signalling to overcome acquired lapatinib resistance, and identify potential novel treatment strategies, with potential biomarkers, for HER2-positive breast cancer that is resistant to HER2 targeted therapies. Electronic supplementary material The online version of this article (10.1186/s12885-018-4852-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Alex J Eustace
- Molecular Therapeutics for Cancer Ireland, National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland.
| | - Neil T Conlon
- Molecular Therapeutics for Cancer Ireland, National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - Martina S J McDermott
- Molecular Therapeutics for Cancer Ireland, National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - Brigid C Browne
- Molecular Therapeutics for Cancer Ireland, National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - Patrick O'Leary
- UCD School of Biomolecular and Biomedical Science, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Frankie A Holmes
- Texas Oncology-Memorial Hermann Memorial City, US Oncology Research, 925 Gessner Road #550, Houston, TX, 77024-2546, USA
| | | | | | | | - Clair Gallagher
- Molecular Therapeutics for Cancer Ireland, National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - Lorraine O'Driscoll
- School of Pharmacy & Pharmaceutical Sciences, and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Sweta Rani
- School of Pharmacy & Pharmaceutical Sciences, and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Stephen F Madden
- Molecular Therapeutics for Cancer Ireland, National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland.,Data Science Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Neil A O'Brien
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles, California, Los Angeles, USA
| | - Charles Ginther
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles, California, Los Angeles, USA
| | - Dennis Slamon
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles, California, Los Angeles, USA
| | - Naomi Walsh
- Molecular Therapeutics for Cancer Ireland, National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - William M Gallagher
- UCD School of Biomolecular and Biomedical Science, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Radoslaw Zagozdzon
- Department of Clinical Immunology, Transplantation Institute, Medical University of Warsaw, Nowogrodzka, 59, Warsaw, Poland
| | - William R Watson
- UCD School of Biomolecular and Biomedical Science, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Norma O'Donovan
- Molecular Therapeutics for Cancer Ireland, National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - John Crown
- Molecular Therapeutics for Cancer Ireland, National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland.,Department of Oncology, St. Vincent's University Hospital, Dublin, Ireland
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18
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Alimbetov D, Askarova S, Umbayev B, Davis T, Kipling D. Pharmacological Targeting of Cell Cycle, Apoptotic and Cell Adhesion Signaling Pathways Implicated in Chemoresistance of Cancer Cells. Int J Mol Sci 2018; 19:ijms19061690. [PMID: 29882812 PMCID: PMC6032165 DOI: 10.3390/ijms19061690] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 05/31/2018] [Accepted: 06/01/2018] [Indexed: 12/11/2022] Open
Abstract
Chemotherapeutic drugs target a physiological differentiating feature of cancer cells as they tend to actively proliferate more than normal cells. They have well-known side-effects resulting from the death of highly proliferative normal cells in the gut and immune system. Cancer treatment has changed dramatically over the years owing to rapid advances in oncology research. Developments in cancer therapies, namely surgery, radiotherapy, cytotoxic chemotherapy and selective treatment methods due to better understanding of tumor characteristics, have significantly increased cancer survival. However, many chemotherapeutic regimes still fail, with 90% of the drug failures in metastatic cancer treatment due to chemoresistance, as cancer cells eventually develop resistance to chemotherapeutic drugs. Chemoresistance is caused through genetic mutations in various proteins involved in cellular mechanisms such as cell cycle, apoptosis and cell adhesion, and targeting those mechanisms could improve outcomes of cancer therapy. Recent developments in cancer treatment are focused on combination therapy, whereby cells are sensitized to chemotherapeutic agents using inhibitors of target pathways inducing chemoresistance thus, hopefully, overcoming the problems of drug resistance. In this review, we discuss the role of cell cycle, apoptosis and cell adhesion in cancer chemoresistance mechanisms, possible drugs to target these pathways and, thus, novel therapeutic approaches for cancer treatment.
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Affiliation(s)
- Dauren Alimbetov
- Laboratory of bioengineering and regenerative medicine, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave, Z05H0P9 Astana, Kazakhstan.
| | - Sholpan Askarova
- Laboratory of bioengineering and regenerative medicine, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave, Z05H0P9 Astana, Kazakhstan.
| | - Bauyrzhan Umbayev
- Laboratory of bioengineering and regenerative medicine, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave, Z05H0P9 Astana, Kazakhstan.
| | - Terence Davis
- Division of Cancer and Genetics, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, UK.
| | - David Kipling
- Division of Cancer and Genetics, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, UK.
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19
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Ohoka N, Morita Y, Nagai K, Shimokawa K, Ujikawa O, Fujimori I, Ito M, Hayase Y, Okuhira K, Shibata N, Hattori T, Sameshima T, Sano O, Koyama R, Imaeda Y, Nara H, Cho N, Naito M. Derivatization of inhibitor of apoptosis protein (IAP) ligands yields improved inducers of estrogen receptor α degradation. J Biol Chem 2018; 293:6776-6790. [PMID: 29545311 DOI: 10.1074/jbc.ra117.001091] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/06/2018] [Indexed: 01/03/2023] Open
Abstract
Aberrant expression of proteins often underlies many diseases, including cancer. A recently developed approach in drug development is small molecule-mediated, selective degradation of dysregulated proteins. We have devised a protein-knockdown system that utilizes chimeric molecules termed specific and nongenetic IAP-dependent protein erasers (SNIPERs) to induce ubiquitylation and proteasomal degradation of various target proteins. SNIPER(ER)-87 consists of an inhibitor of apoptosis protein (IAP) ligand LCL161 derivative that is conjugated to the estrogen receptor α (ERα) ligand 4-hydroxytamoxifen by a PEG linker, and we have previously reported that this SNIPER efficiently degrades the ERα protein. Here, we report that derivatization of the IAP ligand module yields SNIPER(ER)s with superior protein-knockdown activity. These improved SNIPER(ER)s exhibited higher binding affinities to IAPs and induced more potent degradation of ERα than does SNIPER(ER)-87. Further, they induced simultaneous degradation of cellular inhibitor of apoptosis protein 1 (cIAP1) and delayed degradation of X-linked IAP (XIAP). Notably, these reengineered SNIPER(ER)s efficiently induced apoptosis in MCF-7 human breast cancer cells that require IAPs for continued cellular survival. We found that one of these molecules, SNIPER(ER)-110, inhibits the growth of MCF-7 tumor xenografts in mice more potently than the previously characterized SNIPER(ER)-87. Mechanistic analysis revealed that our novel SNIPER(ER)s preferentially recruit XIAP, rather than cIAP1, to degrade ERα. Our results suggest that derivatized IAP ligands could facilitate further development of SNIPERs with potent protein-knockdown and cytocidal activities against cancer cells requiring IAPs for survival.
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Affiliation(s)
- Nobumichi Ohoka
- From the Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences, Kanagawa 210-9501 and
| | - Yoko Morita
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Katsunori Nagai
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Kenichiro Shimokawa
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Osamu Ujikawa
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Ikuo Fujimori
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Masahiro Ito
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Youji Hayase
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Keiichiro Okuhira
- From the Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences, Kanagawa 210-9501 and
| | - Norihito Shibata
- From the Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences, Kanagawa 210-9501 and
| | - Takayuki Hattori
- From the Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences, Kanagawa 210-9501 and
| | - Tomoya Sameshima
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Osamu Sano
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Ryokichi Koyama
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Yasuhiro Imaeda
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Hiroshi Nara
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Nobuo Cho
- the Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd., Kanagawa 251-8555, Japan
| | - Mikihiko Naito
- From the Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences, Kanagawa 210-9501 and
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20
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Fulda S. Therapeutic opportunities based on caspase modulation. Semin Cell Dev Biol 2017; 82:150-157. [PMID: 29247787 DOI: 10.1016/j.semcdb.2017.12.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 12/05/2017] [Accepted: 12/11/2017] [Indexed: 02/07/2023]
Abstract
Caspases are a family of proteolytic enzymes that play a critical role in the regulation of programmed cell death via apoptosis. Activation of caspases is frequently impaired in human cancers, contributing to cancer formation, progression and therapy resistance. A better understanding of the molecular mechanisms regulating caspase activation in cancer cells is therefore highly important. Thus, targeted modulation of caspase activation and apoptosis represents a promising approach for the development of new therapeutic options to elucidate cancer cell death.
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Affiliation(s)
- Simone Fulda
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt, Germany; German Cancer Consortium (DKTK), Partner Site Frankfurt, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany.
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21
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Jordan LG, Booth BW. HER2 + breast cancer cells undergo apoptosis upon exposure to tannic acid released from remodeled cross-linked collagen type I. J Biomed Mater Res A 2017; 106:26-32. [PMID: 28877394 DOI: 10.1002/jbm.a.36205] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 08/29/2017] [Accepted: 08/30/2017] [Indexed: 01/20/2023]
Abstract
Tannic acid (TA) is a naturally occurring polyphenol that cross-links collagen type I and possesses anticancer potential. In previous studies, we demonstrated the increased sensitivity of estrogen receptor-positive (ER+ ) breast cancer cells to TA as opposed to triple negative breast cancer cells and normal human breast epithelial cells. In the current study, human pre-adipocytes and HER2+ breast cancer cells were grown on TA cross-linked collagen type I beads. Cell attachment, growth, and proliferation of the cells result in remodeling of the collagen matrix and release of the cross-linking TA. TA concentrations in the conditioned media were determined. Induced apoptosis of cells grown on the TA cross-linked collagen type I beads was imaged and quantified. Viability of HER2+ breast cancer cells and normal breast epithelial cells after exposure TA released from bead remodeling was quantified. Caspase gene expression and protein expression were evaluated. HER2+ breast cancer cells underwent caspase-mediated apoptosis in response to TA exposure. TA-induced apoptosis in a concentration- and time-dependent manner, with HER2+ breast cancer cells demonstrating an increased sensitivity to the TA effects. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 26-32, 2018.
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Affiliation(s)
- Lauren G Jordan
- Department of Bioengineering, Clemson University, Clemson, South Carolina
| | - Brian W Booth
- Department of Bioengineering, Clemson University, Clemson, South Carolina.,Institute for Biological Interfaces of Engineering, Clemson University, Clemson, South Carolina
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22
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Zhao M, Howard EW, Parris AB, Guo Z, Zhao Q, Ma Z, Xing Y, Liu B, Edgerton SM, Thor AD, Yang X. Activation of cancerous inhibitor of PP2A (CIP2A) contributes to lapatinib resistance through induction of CIP2A-Akt feedback loop in ErbB2-positive breast cancer cells. Oncotarget 2017; 8:58847-58864. [PMID: 28938602 PMCID: PMC5601698 DOI: 10.18632/oncotarget.19375] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 07/11/2017] [Indexed: 11/25/2022] Open
Abstract
Lapatinib, a small molecule ErbB2/EGFR inhibitor, is FDA-approved for the treatment of metastatic ErbB2-overexpressing breast cancer; however, lapatinib resistance is an emerging clinical challenge. Understanding the molecular mechanisms of lapatinib-mediated anti-cancer activities and identifying relevant resistance factors are of pivotal significance. Cancerous inhibitor of protein phosphatase 2A (CIP2A) is a recently identified oncoprotein that is overexpressed in breast cancer. Our study investigated the role of CIP2A in the anti-cancer efficacy of lapatinib in ErbB2-overexpressing breast cancer cells. We found that lapatinib concurrently downregulated CIP2A and receptor tyrosine kinase signaling in ErbB2-overexpressing SKBR3 and 78617 cells; however, these effects were attenuated in lapatinib-resistant (LR) cells. CIP2A overexpression rendered SKBR3 and 78617 cells resistant to lapatinib-induced apoptosis and growth inhibition. Conversely, CIP2A knockdown via lentiviral shRNA enhanced cell sensitivity to lapatinib-induced growth inhibition and apoptosis. Results also suggested that lapatinib downregulated CIP2A through regulation of protein stability. We further demonstrated that lapatinib-induced CIP2A downregulation can be recapitulated by LY294002, suggesting that Akt mediates CIP2A upregulation. Importantly, lapatinib induced differential CIP2A downregulation between parental BT474 and BT474/LR cell lines. Moreover, CIP2A shRNA knockdown significantly sensitized the BT474/LR cells to lapatinib. Collectively, our results demonstrate that CIP2A is a molecular target and resistance factor of lapatinib with a critical role in lapatinib-induced cellular responses, including the inhibition of the CIP2A-Akt feedback loop. Further investigation of lapatinib-mediated CIP2A regulation will advance our understanding of lapatinib-associated anti-tumor activities and drug resistance.
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Affiliation(s)
- Ming Zhao
- Julius L. Chambers Biomedical/Biotechnology Research Institute and Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, North Carolina, USA
| | - Erin W Howard
- Julius L. Chambers Biomedical/Biotechnology Research Institute and Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, North Carolina, USA
| | - Amanda B Parris
- Julius L. Chambers Biomedical/Biotechnology Research Institute and Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, North Carolina, USA
| | - Zhiying Guo
- Julius L. Chambers Biomedical/Biotechnology Research Institute and Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, North Carolina, USA
| | - Qingxia Zhao
- Julius L. Chambers Biomedical/Biotechnology Research Institute and Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, North Carolina, USA.,Basic Medical College of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Zhikun Ma
- Julius L. Chambers Biomedical/Biotechnology Research Institute and Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, North Carolina, USA
| | - Ying Xing
- Basic Medical College of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Bolin Liu
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Susan M Edgerton
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Ann D Thor
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Xiaohe Yang
- Julius L. Chambers Biomedical/Biotechnology Research Institute and Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, North Carolina, USA.,College of Medicine, Henan University of Sciences and Technology, Luoyang, Henan, P.R. China
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23
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Fulda S. Smac Mimetics to Therapeutically Target IAP Proteins in Cancer. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 330:157-169. [PMID: 28215531 DOI: 10.1016/bs.ircmb.2016.09.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Inhibitor of Apoptosis (IAP) proteins are overexpressed in a variety of human cancers. Therefore, they are considered as promising targets for the design of therapeutic strategies. Smac mimetics mimic the endogenous mitochondrial protein Smac that antagonizes IAP proteins upon its release into the cytosol. Multiple preclinical studies have documented the ability of Smac mimetics to either directly induce cell death of cancer cells or to prime them to agents that trigger cell death. At present, several Smac mimetics are being evaluated in early clinical trials. The current review provides an overview on the potential of Smac mimetics as cancer therapeutics to target IAP proteins for cancer therapy.
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Affiliation(s)
- S Fulda
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany; German Cancer Consortium (DKTK), Heidelberg, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany.
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24
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Shi H, Zhang W, Zhi Q, Jiang M. Lapatinib resistance in HER2+ cancers: latest findings and new concepts on molecular mechanisms. Tumour Biol 2016; 37:10.1007/s13277-016-5467-2. [PMID: 27726101 DOI: 10.1007/s13277-016-5467-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 09/23/2016] [Indexed: 12/12/2022] Open
Abstract
In the era of new and mostly effective molecular targeted therapies, human epidermal growth factor receptor 2 positive (HER2+) cancers are still intractable diseases. Lapatinib, a dual epidermal growth factor receptor (EGFR) and HER2 tyrosine kinase inhibitor, has greatly improved breast cancer prognosis in recent years after the initial introduction of trastuzumab (Herceptin). However, clinical evidence indicates the existence of both primary unresponsiveness and secondary lapatinib resistance, which leads to the failure of this agent in HER2+ cancer patients. It remains a major clinical challenge to target the oncogenic pathways with drugs having low resistance. Multiple pathways are involved in the occurrence of lapatinib resistance, including the pathways of receptor tyrosine kinase, non-receptor tyrosine kinase, autophagy, apoptosis, microRNA, cancer stem cell, tumor metabolism, cell cycle, and heat shock protein. Moreover, understanding the relationship among these mechanisms may contribute to future tumor combination therapies. Therefore, it is of urgent necessity to elucidate the precise mechanisms of lapatinib resistance and improve the therapeutic use of this agent in clinic. The present review, in the hope of providing further scientific support for molecular targeted therapies in HER2+ cancers, discusses about the latest findings and new concepts on molecular mechanisms underlying lapatinib resistance.
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Affiliation(s)
- Huiping Shi
- Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China
| | - Weili Zhang
- Department of Gastroenterology, Xiangcheng People's Hospital, Suzhou, Jiangsu Province, 215131, China
| | - Qiaoming Zhi
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China.
| | - Min Jiang
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China.
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25
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Potential Diagnostic, Prognostic and Therapeutic Targets of MicroRNAs in Human Gastric Cancer. Int J Mol Sci 2016; 17:ijms17060945. [PMID: 27322246 PMCID: PMC4926478 DOI: 10.3390/ijms17060945] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 06/01/2016] [Accepted: 06/07/2016] [Indexed: 12/11/2022] Open
Abstract
Human gastric cancer (GC) is characterized by a high incidence and mortality rate, largely because it is normally not identified until a relatively advanced stage owing to a lack of early diagnostic biomarkers. Gastroscopy with biopsy is the routine method for screening, and gastrectomy is the major therapeutic strategy for GC. However, in more than 30% of GC surgical patients, cancer has progressed too far for effective medical resection. Thus, useful biomarkers for early screening or detection of GC are essential for improving patients’ survival rate. MicroRNAs (miRNAs) play an important role in tumorigenesis. They contribute to gastric carcinogenesis by altering the expression of oncogenes and tumor suppressors. Because of their stability in tissues, serum/plasma and other body fluids, miRNAs have been suggested as novel tumor biomarkers with suitable clinical potential. Recently, aberrantly expressed miRNAs have been identified and tested for clinical application in the management of GC. Aberrant miRNA expression profiles determined with miRNA microarrays, quantitative reverse transcription-polymerase chain reaction and next-generation sequencing approaches could be used to establish sample specificity and to identify tumor type. Here, we provide an up-to-date summary of tissue-based GC-associated miRNAs, describing their involvement and that of their downstream targets in tumorigenic and biological processes. We examine correlations among significant clinical parameters and prognostic indicators, and discuss recurrence monitoring and therapeutic options in GC. We also review plasma/serum-based, GC-associated, circulating miRNAs and their clinical applications, focusing especially on early diagnosis. By providing insights into the mechanisms of miRNA-related tumor progression, this review will hopefully aid in the identification of novel potential therapeutic targets.
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26
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Meissner JM, Toporkiewicz M, Czogalla A, Matusewicz L, Kuliczkowski K, Sikorski AF. Novel antisense therapeutics delivery systems: In vitro and in vivo studies of liposomes targeted with anti-CD20 antibody. J Control Release 2015; 220:515-528. [PMID: 26585505 DOI: 10.1016/j.jconrel.2015.11.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 11/07/2015] [Accepted: 11/12/2015] [Indexed: 10/22/2022]
Abstract
Antisense gene therapy using molecules such as antisense oligodeoxynucleotides, siRNA or miRNA is a very promising strategy for the treatment of neoplastic diseases. It can be combined with other treatment strategies to enhance therapeutic effect. In acute leukemias, overexpression of the antiapoptotic gene BCL2 is observed in more than 70% of cases. Therefore, reduction of the Bcl-2 protein level could, in itself, prevent the development of cancer or could possibly help sensitize cancer cells to apoptosis inducers. The main objective of our work is to develop therapeutic liposome formulations characterized by high transfection efficiency, stability in the presence of serum, as well as specificity and toxicity for target (leukemic) cells. Each of our liposomal formulations consists of a core composed of antisense oligonucleotides complexed by either cationic lipid, DOTAP, or a synthetic polycation, polyethyleneimine, encapsulated within liposomes modified with polyethylenoglycol. In addition, the liposomal shells are enriched with covalently-bound antibodies recognizing a well characterized bio-marker, CD20, exposed on the surface of leukemia cells. The resulting immunoliposomes selectively and effectively reduced the expression of BCL2 in target cells. Model animal experiments carried out on mice-engrafted tumors expressing the specific marker showed high efficiency of the liposome formulations against specific tumor development. In conclusion, we show that lipid formulations based on a polyplex or lipoplex backbone additionally equipped with antibodies are promising non-viral vectors for specific oligonucleotide transfer into human tumor cells.
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Affiliation(s)
- Justyna M Meissner
- Laboratory of Cytobiochemistry, Biotechnology Faculty, University of Wrocław, Joliot-Curie 14a, 50-383 Wrocław, Poland; Electron Microscopy Laboratory, Faculty of Biology, University of Environmental and Life Sciences Wroclaw, Kożuchowska 5b, 50-631 Wroclaw, Poland
| | - Monika Toporkiewicz
- Laboratory of Cytobiochemistry, Biotechnology Faculty, University of Wrocław, Joliot-Curie 14a, 50-383 Wrocław, Poland
| | - Aleksander Czogalla
- Laboratory of Cytobiochemistry, Biotechnology Faculty, University of Wrocław, Joliot-Curie 14a, 50-383 Wrocław, Poland
| | - Lucyna Matusewicz
- Laboratory of Cytobiochemistry, Biotechnology Faculty, University of Wrocław, Joliot-Curie 14a, 50-383 Wrocław, Poland
| | - Kazimierz Kuliczkowski
- Wrocław Medical University, Department and Clinic of Haematology, Blood Neoplasms, and Bone Marrow Transplantation ul. L, Pasteura 4, 50-367 Wroclaw, Poland
| | - Aleksander F Sikorski
- Laboratory of Cytobiochemistry, Biotechnology Faculty, University of Wrocław, Joliot-Curie 14a, 50-383 Wrocław, Poland.
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27
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Milutinovic S, Kashyap AK, Yanagi T, Wimer C, Zhou S, O'Neil R, Kurtzman AL, Faynboym A, Xu L, Hannum CH, Diaz PW, Matsuzawa SI, Horowitz M, Horowitz L, Bhatt RR, Reed JC. Dual Agonist Surrobody Simultaneously Activates Death Receptors DR4 and DR5 to Induce Cancer Cell Death. Mol Cancer Ther 2015; 15:114-24. [PMID: 26516157 DOI: 10.1158/1535-7163.mct-15-0400] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 10/05/2015] [Indexed: 11/16/2022]
Abstract
Death receptors of the TNF family are found on the surface of most cancer cells and their activation typically kills cancer cells through the stimulation of the extrinsic apoptotic pathway. The endogenous ligand for death receptors 4 and 5 (DR4 and DR5) is TNF-related apoptosis-inducing ligand, TRAIL (Apo2L). As most untransformed cells are not susceptible to TRAIL-induced apoptosis, death receptor activators have emerged as promising cancer therapeutic agents. One strategy to stimulate death receptors in cancer patients is to use soluble human recombinant TRAIL protein, but this agent has limitations of a short half-life and decoy receptor sequestration. Another strategy that attempted to evade decoy receptor sequestration and to provide improved pharmacokinetic properties was to generate DR4 or DR5 agonist antibodies. The resulting monoclonal agonist antibodies overcame the limitations of short half-life and avoided decoy receptor sequestration, but are limited by activating only one of the two death receptors. Here, we describe a DR4 and DR5 dual agonist produced using Surrobody technology that activates both DR4 and DR5 to induce apoptotic death of cancer cells in vitro and in vivo and also avoids decoy receptor sequestration. This fully human anti-DR4/DR5 Surrobody displays superior potency to DR4- and DR5-specific antibodies, even when combined with TRAIL-sensitizing proapoptotic agents. Moreover, cancer cells were less likely to acquire resistance to Surrobody than either anti-DR4 or anti-DR5 monospecific antibodies. Taken together, Surrobody shows promising preclinical proapoptotic activity against cancer cells, meriting further exploration of its potential as a novel cancer therapeutic agent.
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Affiliation(s)
| | | | - Teruki Yanagi
- Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Carina Wimer
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California
| | - Sihong Zhou
- Sea Lane Biotechnologies, Mountain View, California. Sutro Biopharma, South San Francisco, California
| | - Ryann O'Neil
- Sea Lane Biotechnologies, Mountain View, California. Novartis Institutes for Biomedical Research, Emeryville, California
| | - Aaron L Kurtzman
- Sea Lane Biotechnologies, Mountain View, California. Rigel Pharmaceuticals, Inc., South San Francisco, California
| | | | - Li Xu
- Sea Lane Biotechnologies, Mountain View, California
| | - Charles H Hannum
- Sea Lane Biotechnologies, Mountain View, California. Oxford BioTherapeutics, San Jose, California
| | | | - Shu-ichi Matsuzawa
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California
| | | | | | - Ramesh R Bhatt
- Sea Lane Biotechnologies, Mountain View, California. Rigel Pharmaceuticals, Inc., South San Francisco, California.
| | - John C Reed
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California.
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28
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De Iuliis F, Salerno G, Giuffrida A, Milana B, Taglieri L, Rubinacci G, Giantulli S, Terella F, Silvestri I, Scarpa S. Breast cancer cells respond differently to docetaxel depending on their phenotype and on survivin upregulation. Tumour Biol 2015; 37:2603-11. [PMID: 26392111 DOI: 10.1007/s13277-015-4075-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 09/13/2015] [Indexed: 10/23/2022] Open
Abstract
Breast cancer is characterized by molecular heterogeneity, and four major breast cancer subtypes have been identified, each characterized by significant differences in survival, prognosis, and response to therapy. We have studied the effects of docetaxel treatment on apoptosis and survivin expression in four breast cancer cell lines: MCF7 (luminal A: estrogen receptor-positive and progesterone receptor-positive, ErbB2-negative), BT474 (luminal B: estrogen receptor/progesterone receptor/ErbB2-positive), SKBR3 (HER2-like: estrogen receptor/progesterone receptor-negative, ErbB2-positive), and MDA-MB231 (basal-like: estrogen receptor/progesterone receptor/ErbB2-negative). We demonstrated that docetaxel-induced apoptosis and survivin upregulation (MCF7 p = 0.002, BT474 p = 0.001, SKBR3 p = 0.001) in luminal A/B and HER2-like cells, while it induced mainly necrosis and a lower rate of survivin upregulation (MDA-MB231 p = 0.035) in basal-like cells. Wortmannin, a p-Akt inhibitor, was able to revert surviving upregulation and, at the same time, induced an increase of docetaxel-dependent apoptosis, suggesting that reduced levels of survivin can sensitize tumor cells to apoptosis. These data show that the analyzed breast cancer cell lines respond differently to docetaxel, depending on their receptor expression profile and molecular phenotype. Yet, these data confirm that one of the pathways involved in taxane-related chemoresistance is the upregulation of survivin. Further studies on the molecular mechanisms of chemoresistance and on the different modalities of apoptosis induced by chemotherapeutic agents are requested to better understand how cancer cells evade cell death, in order to design new kind of anticancer agents and survivin could represent a future target for this kind of research.
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Affiliation(s)
- Francesca De Iuliis
- Experimental Medicine Department, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - Gerardo Salerno
- Experimental Medicine Department, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - Anna Giuffrida
- Experimental Medicine Department, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - Bernardina Milana
- Molecular Medicine Department, Sapienza University of Rome, 00161, Rome, Italy
| | - Ludovica Taglieri
- Experimental Medicine Department, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - Giovanna Rubinacci
- Molecular Medicine Department, Sapienza University of Rome, 00161, Rome, Italy
| | - Sabrina Giantulli
- Molecular Medicine Department, Sapienza University of Rome, 00161, Rome, Italy
| | - Federica Terella
- Molecular Medicine Department, Sapienza University of Rome, 00161, Rome, Italy
| | - Ida Silvestri
- Molecular Medicine Department, Sapienza University of Rome, 00161, Rome, Italy
| | - Susanna Scarpa
- Experimental Medicine Department, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.
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29
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Abstract
As the Inhibitor of Apoptosis (IAP) proteins are expressed at high levels in human cancers, they represent promising targets for therapeutic intervention. Small-molecule inhibitors of IAP proteins mimicking the endogenous IAP antagonist Smac, called Smac mimetics, neutralize IAP proteins and thereby promote the induction of cell death. Smac mimetics have been shown in preclinical models of human cancer to directly trigger cancer cell death or to sensitize for cancer cell death induced by a variety of cytotoxic stimuli. Smac mimetics are currently undergoing clinical evaluation in phase I/II trials, demonstrating that therapeutic targeting of IAP proteins has reached the clinical stage.
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Affiliation(s)
- Simone Fulda
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Komturstr. 3a, 60528 Frankfurt, Germany; German Cancer Consortium (DKTK), Heidelberg, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany.
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30
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Lee SH, Lee JY, Jung CL, Bae IH, Suh KH, Ahn YG, Jin DH, Kim TW, Suh YA, Jang SJ. A novel antagonist to the inhibitors of apoptosis (IAPs) potentiates cell death in EGFR-overexpressing non-small-cell lung cancer cells. Cell Death Dis 2014; 5:e1477. [PMID: 25321484 PMCID: PMC4649530 DOI: 10.1038/cddis.2014.447] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 09/06/2014] [Accepted: 09/11/2014] [Indexed: 12/25/2022]
Abstract
In the effort to develop an efficient chemotherapy drug for the treatment of non-small-cell lung cancer (NSCLC), we analyzed the anti-tumorigenic effects of a novel small molecule targeting the inhibitor of apoptosis (IAPs), HM90822B, on NSCLC cells. HM90822B efficiently decreased IAP expression, especially that of XIAP and survivin, in several NSCLC cells. Interestingly, cells overexpressing epidermal growth factor receptor (EGFR) due to the mutations were more sensitive to HM90822B, undergoing cell cycle arrest and apoptosis when treated. In xenograft experiments, inoculated EGFR-overexpressing NSCLC cells showed tumor regression when treated with the inhibitor, demonstrating the chemotherapeutic potential of this agent. Mechanistically, decreased levels of EGFR, Akt and phospho-MAPKs were observed in inhibitor-treated PC-9 cells on phosphorylation array and western blotting analysis, indicating that the reagent inhibited cell growth by preventing critical cell survival signaling pathways. In addition, gene-specific knockdown studies against XIAP and/or EGFR further uncovered the involvement of Akt and MAPK pathways in HM90822B-mediated downregulation of NSCLC cell growth. Together, these results support that HM90822B is a promising candidate to be developed as lung tumor chemotherapeutics by targeting oncogenic activities of IAP together with inhibiting cell survival signaling pathways.
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Affiliation(s)
- S-H Lee
- Institute for Innovative Cancer Research, Asan Institute for Life Science, Seoul Asan Medical Center, The University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J-Y Lee
- Institute for Innovative Cancer Research, Asan Institute for Life Science, Seoul Asan Medical Center, The University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - C L Jung
- Institute for Innovative Cancer Research, Asan Institute for Life Science, Seoul Asan Medical Center, The University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - I H Bae
- Hanmi Research Center, Hanmi Pharm. Co., Ltd., Hwaseong, Gyeonggi-do, Republic of Korea
| | - K H Suh
- Hanmi Research Center, Hanmi Pharm. Co., Ltd., Hwaseong, Gyeonggi-do, Republic of Korea
| | - Y G Ahn
- Hanmi Research Center, Hanmi Pharm. Co., Ltd., Hwaseong, Gyeonggi-do, Republic of Korea
| | - D-H Jin
- Institute for Innovative Cancer Research, Asan Institute for Life Science, Seoul Asan Medical Center, The University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - T W Kim
- 1] Institute for Innovative Cancer Research, Asan Institute for Life Science, Seoul Asan Medical Center, The University of Ulsan College of Medicine, Seoul, Republic of Korea [2] Department of Medicinal Oncology, Seoul Asan Medical Center, The University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y-A Suh
- Institute for Innovative Cancer Research, Asan Institute for Life Science, Seoul Asan Medical Center, The University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S J Jang
- 1] Institute for Innovative Cancer Research, Asan Institute for Life Science, Seoul Asan Medical Center, The University of Ulsan College of Medicine, Seoul, Republic of Korea [2] Department of Pathology, Seoul Asan Medical Center, The University of Ulsan College of Medicine, Seoul, Republic of Korea
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31
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Bai L, Smith DC, Wang S. Small-molecule SMAC mimetics as new cancer therapeutics. Pharmacol Ther 2014; 144:82-95. [PMID: 24841289 PMCID: PMC4247261 DOI: 10.1016/j.pharmthera.2014.05.007] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 05/07/2014] [Indexed: 12/19/2022]
Abstract
Apoptosis is a tightly regulated cellular process and faulty regulation of apoptosis is a hallmark of human cancers. Targeting key apoptosis regulators with the goal to restore apoptosis in tumor cells has been pursued as a new cancer therapeutic strategy. XIAP, cIAP1, and cIAP2, members of inhibitor of apoptosis (IAP) proteins, are critical regulators of cell death and survival and are attractive targets for new cancer therapy. The SMAC/DIABLO protein is an endogenous antagonist of XIAP, cIAP1, and cIAP2. In the last decade, intense research efforts have resulted in the design and development of several small-molecule SMAC mimetics now in clinical trials for cancer treatment. In this review, we will discuss the roles of XIAP, cIAP1, and cIAP2 in regulation of cell death and survival, and the design and development of small-molecule SMAC mimetics as novel cancer treatments.
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Affiliation(s)
- Longchuan Bai
- Comprehensive Cancer Center, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Internal Medicine, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Pharmacology, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Medicinal Chemistry, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA
| | - David C Smith
- Comprehensive Cancer Center, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Internal Medicine, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Pharmacology, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Medicinal Chemistry, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA.
| | - Shaomeng Wang
- Comprehensive Cancer Center, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Internal Medicine, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Pharmacology, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Medicinal Chemistry, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA.
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32
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The interrelationship between HER2 and CASP3/8 with apoptosis in different cancer cell lines. Mol Biol Rep 2014; 41:8031-6. [PMID: 25189649 DOI: 10.1007/s11033-014-3700-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Accepted: 08/23/2014] [Indexed: 10/24/2022]
Abstract
HER2/ErbB2, a known proto-oncogene (also known as HER2, neu), is among the most practiced molecules in the cancer area. Human epidermal growth factor receptor 2 (HER2) is over expressed in approximately 20-30 % of breast cancer tumors and also in a lot of other human cancer types. It is known to be related to the aggressiveness of the disease, increased mortality and higher relapse ratio. The unusual HER2 overexpression is associated with more severe disease characteristics in several cancers. In recent past, there have been remarkable advances in understanding the role of the HER2 gene in cancers. Caspases are well renowned proteases that act as essential initiators and executioners of the apoptotic process. The primary function of HER2 is suppressing apoptosis to enhance cell survival and eventually giving rise to uncontrolled proliferation and tumor growth. The objective of this work was to study the expression levels of HER2 and apoptosis related factors CASP-3 and CASP-8 in several breast and other cancer cell lines and finally to find a meaningful correlation between all these. We summed up by obtaining an increase in expression of HER2 in all cancer cell lines as compared to that of CASP-3 and CASP-8. In summary we conclude that HER2 promotes cell survival by inhibiting apoptosis i.e. by downregulating CASP-3 and CASP-8. This is a novel study comprising the expression study of HER2 and different caspases in different cancer cell lines simultaneously. It is thus expected that this study will aid in better establishment of correlation between HER2 and caspases in different malignancies.
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33
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Wu JS, Kao EF, Lee CN. Discovering hidden connections among diseases, genes and drugs based on microarray expression profiles with negative-term filtering. PLoS One 2014; 9:e98826. [PMID: 24915461 PMCID: PMC4051596 DOI: 10.1371/journal.pone.0098826] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 05/06/2014] [Indexed: 11/18/2022] Open
Abstract
Microarrays based on gene expression profiles (GEPs) can be tailored specifically for a variety of topics to provide a precise and efficient means with which to discover hidden information. This study proposes a novel means of employing existing GEPs to reveal hidden relationships among diseases, genes, and drugs within a rich biomedical database, PubMed. Unlike the co-occurrence method, which considers only the appearance of keywords, the proposed method also takes into account negative relationships and non-relationships among keywords, the importance of which has been demonstrated in previous studies. Three scenarios were conducted to verify the efficacy of the proposed method. In Scenario 1, disease and drug GEPs (disease: lymphoma cancer, lymph node cancer, and drug: cyclophosphamide) were used to obtain lists of disease- and drug-related genes. Fifteen hidden connections were identified between the diseases and the drug. In Scenario 2, we adopted different diseases and drug GEPs (disease: AML-ALL dataset and drug: Gefitinib) to obtain lists of important diseases and drug-related genes. In this case, ten hidden connections were identified. In Scenario 3, we obtained a list of disease-related genes from the disease-related GEP (liver cancer) and the drug (Capecitabine) on the PharmGKB website, resulting in twenty-two hidden connections. Experimental results demonstrate the efficacy of the proposed method in uncovering hidden connections among diseases, genes, and drugs. Following implementation of the weight function in the proposed method, a large number of the documents obtained in each of the scenarios were judged to be related: 834 of 4028 documents, 789 of 1216 documents, and 1928 of 3791 documents in Scenarios 1, 2, and 3, respectively. The negative-term filtering scheme also uncovered a large number of negative relationships as well as non-relationships among these connections: 97 of 834, 38 of 789, and 202 of 1928 in Scenarios 1, 2, and 3, respectively.
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Affiliation(s)
- Jain-Shing Wu
- Department of Computer Science and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - E-Fong Kao
- Department of Medical Imaging and Radiological Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chung-Nan Lee
- Department of Computer Science and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
- Department of Medical Imaging and Radiological Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan
- * E-mail:
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Hosni-Ahmed A, Sims M, Jones TS, Patil R, Patil S, Abdelsamed H, Yates CR, Miller DD, Pfeffer LM. EDL-360: A Potential Novel Antiglioma Agent. ACTA ACUST UNITED AC 2014; 6:370-377. [PMID: 25574358 PMCID: PMC4285352 DOI: 10.4172/1948-5956.1000295] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Glioma is a brain tumor that arises from glial cells or glial progenitor cells, and represents 80% of malignant brain tumor incidence in the United States. Glioblastoma multiforme (GBM) is the most aggressive primary brain tumor malignancy with fewer than 8% of patients with GBM surviving for more than 3 years. Over the past 10 years, despite improvement in diagnosis and therapies for cancer, the survival rate for high-grade glioma patients remains dismal. The main focus of our research is to identify potent novel antiglioma small molecules. We previously showed that EDL-360, a tetrahydroisoquinoline (THIQ) analog, as being highly cytotoxic to human glioma cell cultures. Here we show that EDL-360 significantly induced apoptosis in human glioma cell lines (U87 and LN18). However, in normal astrocytic cells, EDL-360 induced a modest G0/G1 cell cycle arrest but did not induce apoptosis. In an attempt to enhance EDL-360 induced cell death, we tested simultaneous treatment with EDL-360 and embelin (an inhibitor of the anti-apoptotic protein, XIAP). We found that, glioma cells had significant lower viability when EDL-360 and embelin were used in combination when compared to EDL-360 alone. We also used combination treatment of EDL-360 with decylubiquinone (dUb), a caspase-9 inhibitor, and found that the combination treatment induced a significant cell death when compared to treatment with EDL-360 alone. This is the first report that suggests that dUb has anticancer activity, and perhaps acts as a XIAP inhibitor. Finally, our in vivo data showed that EDL-360 treatment induced a partial regression in glioma tumorigenesis and induced cell death in the treated tumors as shown by H&E staining. Taken together these data suggests that EDL-360 has a potential therapeutic application for treating glioma, especially when combined with XIAP inhibitors.
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Affiliation(s)
- Amira Hosni-Ahmed
- Departments of Pathology and Laboratory Medicine, University of Tennessee Health Science Center, USA ; The Center for Cancer Research, University of Tennessee Health Science Center, USA ; Department of Chemistry, College of Science, Fayoum University, Fayoum, Egypt
| | - Michelle Sims
- Departments of Pathology and Laboratory Medicine, University of Tennessee Health Science Center, USA ; The Center for Cancer Research, University of Tennessee Health Science Center, USA
| | | | - Renukadevi Patil
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, USA
| | - Shivaputra Patil
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, USA
| | - Hossam Abdelsamed
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA ; Department of Chemistry, College of Science, Fayoum University, Fayoum, Egypt
| | - Charles R Yates
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, USA
| | - Duane D Miller
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, USA
| | - Lawrence M Pfeffer
- Departments of Pathology and Laboratory Medicine, University of Tennessee Health Science Center, USA ; The Center for Cancer Research, University of Tennessee Health Science Center, USA
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Fulda S. Molecular pathways: targeting inhibitor of apoptosis proteins in cancer--from molecular mechanism to therapeutic application. Clin Cancer Res 2013; 20:289-95. [PMID: 24270683 DOI: 10.1158/1078-0432.ccr-13-0227] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Inhibitor of apoptosis (IAP) proteins play a critical role in the control of survival and cell death by regulating key signaling events such as caspase activation and NF-κB signaling. Because aberrantly high expression of IAP proteins represents a frequent oncogenic event in human cancers, therapeutic targeting of IAP proteins is considered as a promising approach. Several small-molecule pharmacologic inhibitors of IAP proteins that mimic the binding domain of the endogenous IAP antagonist second mitochondrial activator of caspases (Smac) to IAP proteins have been developed over the past few years. IAP antagonists have been shown in various preclinical cancer models to either directly initiate cell death or, alternatively, to prime cancer cells for cytotoxic therapies by lowering the threshold for cell death induction. IAP antagonists (i.e., GDC-0917/CUDC-427, LCL161, AT-406, HGS1029, and TL32711) are currently under evaluation in early clinical trials alone or in combination regimens. Thus, the concept to therapeutically target IAP proteins in human cancer has in principle been successfully transferred into a clinical setting and warrants further evaluation as a treatment approach.
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Affiliation(s)
- Simone Fulda
- Author's Affiliation: Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany
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Nestal de Moraes G, Vasconcelos FC, Delbue D, Mognol GP, Sternberg C, Viola JPB, Maia RC. Doxorubicin induces cell death in breast cancer cells regardless of Survivin and XIAP expression levels. Eur J Cell Biol 2013; 92:247-56. [PMID: 24064045 DOI: 10.1016/j.ejcb.2013.08.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 07/11/2013] [Accepted: 08/22/2013] [Indexed: 12/25/2022] Open
Abstract
Breast cancer is the leading cause of deaths in women around the world. Resistance to therapy is the main cause of treatment failure and still little is known about predictive biomarkers for response to systemic therapy. Increasing evidence show that Survivin and XIAP overexpression is closely associated with chemoresistance and poor prognosis in breast cancer. However, their impact on resistance to doxorubicin (dox), a chemotherapeutic agent widely used to treat breast cancer, is poorly understood. Here, we demonstrated that dox inhibited cell viability and induced DNA fragmentation and activation of caspases-3, -7 and -9 in the breast cancer-derived cell lines MCF7 and MDA-MB-231, regardless of different p53 status. Dox exposure resulted in reduction of Survivin and XIAP mRNA and protein levels. However, when we transfected cells with a Survivin-encoding plasmid, we did not observe a cell death-resistant phenotype. XIAP and Survivin silencing, either alone or in combination, had no effect on breast cancer cells sensitivity towards dox. Altogether, we demonstrated that breast cancer cells are sensitive to the chemotherapeutic agent dox irrespective of Survivin and XIAP expression levels. Also, our findings suggest that dox-mediated modulation of Survivin and XIAP might sensitize cells to taxanes when used in a sequential regimen.
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Affiliation(s)
- Gabriela Nestal de Moraes
- Cellular and Molecular Hemato-Oncology Laboratory, Program of Molecular Hemato-Oncology, Brazilian National Cancer Institute (INCA), Praça da Cruz Vermelha, 23/6° andar, Rio de Janeiro, Brazil
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Park HS, Hwang HJ, Kim GY, Cha HJ, Kim WJ, Kim ND, Yoo YH, Choi YH. Induction of apoptosis by fucoidan in human leukemia U937 cells through activation of p38 MAPK and modulation of Bcl-2 family. Mar Drugs 2013; 11:2347-64. [PMID: 23880928 PMCID: PMC3736427 DOI: 10.3390/md11072347] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 05/30/2013] [Accepted: 06/13/2013] [Indexed: 02/07/2023] Open
Abstract
The present study investigated possible mechanisms on the apoptosis induction of human leukemic cells by fucoidan, a sulfated polysaccharide found in marine algae. Fucoidan treatment of cells resulted in inhibition of growth and induction of apoptosis, as measured by 3-(4,5-dimetylthiazol-2-yl)-2,5-diphenyl-tetrazolium (MTT) assay, fluorescence microscopy, DNA fragmentation, and flow cytometry analysis. The increase in apoptosis was associated with the proteolytic activation of caspases, Bid cleavage, insertion of pro-apoptotic Bax into the mitochondria, release of cytochrome c from mitochondria to cytosol, and loss of mitochondria membrane potential (MMP) in U937 cells. However, apoptosis induced by fucoidan was attenuated by caspase inhibitors, indicating that fucoidan-induced apoptosis was dependent on the activation of caspases. Furthermore, fucoidan treatment effectively activated the p38 mitogen-activated protein kinase (MAPK) and p38 MAPK inhibitor, SB203580, and significantly reduced fucoidan-induced apoptosis through inhibition of Bax translocation and caspases activation, suggesting that the activation of p38 MAPK may play a key role in fucoidan-induced apoptosis. In addition, the authors found fucoidan-induced significantly attenuated in Bcl-2 overexpressing U937 cells, and pretreatment with fucoidan and HA 14-1, a small-molecule Bcl-2 inhibitor, markedly increased fucoidan-mediated apoptosis in Bcl-2 overexpressing U937 cells. Our findings imply that we may attribute some of the biological functions of p38 MAPK and Bcl-2 to their ability to inhibit fucoidan-induced apoptosis.
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Affiliation(s)
- Hyun Soo Park
- Department of Pharmacy, Pusan National University, Busan 609-735, Korea; E-Mails: (H.S.P.); (N.D.K.)
| | - Hye Jin Hwang
- Department of Food and Nutrition, Dongeui University, Busan 614-714, Korea; E-Mail:
- Anti-Aging Research Center & Blue-Bio Industry Regional Innovation Center, Dongeui University, Busan 614-714, Korea
| | - Gi-Young Kim
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; E-Mail:
| | - Hee-Jae Cha
- Departments of Parasitology and Genetics, Kosin University College of Medicine, Busan 602-702, Korea; E-Mail:
| | - Wun-Jae Kim
- Department of Urology, Chungbuk National University College of Medicine, Cheongju 361-763, Korea; E-Mail:
| | - Nam Deuk Kim
- Department of Pharmacy, Pusan National University, Busan 609-735, Korea; E-Mails: (H.S.P.); (N.D.K.)
| | - Young Hyun Yoo
- Department of Anatomy and Cell Biology, College of Medicine, Dong-A University, Busan 602-714, Korea
- Authors to whom correspondence should be addressed; E-Mails: (Y.H.Y.); (Y.H.C.); Tel.: +82-51-240-2637 (Y.H.Y.); +82-51-850-7413 (Y.H.C.); Fax: +82-51-243-0016 (Y.H.Y.); +82-51-853-4036 (Y.H.C.)
| | - Yung Hyun Choi
- Anti-Aging Research Center & Blue-Bio Industry Regional Innovation Center, Dongeui University, Busan 614-714, Korea
- Department of Biochemistry, Dongeui University College of Oriental Medicine, Busan 614-052, Korea
- Authors to whom correspondence should be addressed; E-Mails: (Y.H.Y.); (Y.H.C.); Tel.: +82-51-240-2637 (Y.H.Y.); +82-51-850-7413 (Y.H.C.); Fax: +82-51-243-0016 (Y.H.Y.); +82-51-853-4036 (Y.H.C.)
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Abstract
HER2 is a trans-membrane receptor tyrosine kinase that activates multiple growth-promoting signaling pathways including PI3K-AKT and Ras-MAPK. Dysregulation of HER2 is a frequent occurrence in breast cancer that is associated with poor patient outcomes. A primary function of HER2 is suppressing apoptosis to enhance cell survival giving rise to uncontrolled proliferation and tumor growth. There has been much investigation into the mechanisms by which apoptosis is suppressed by HER2 in hopes of finding clinical targets for HER2-positive breast cancers as these cancers often become resistant to therapies that directly target HER2. Several apoptotic mechanisms have been shown to be deregulated in HER2-overexpressing cells with examples in both the intrinsic and extrinsic apoptotic pathways. HER2-mediated activation of PI3K-AKT signaling is required for many of the mechanisms HER2 uses to suppress apoptosis. HER2 overexpression is correlated with increases in anti-apoptotic Bcl-2 proteins including Bcl-2, Bcl-xL, and Mcl-1. HER2 also suppresses p53-mediated apoptosis by upregulation of MDM2 by activation of AKT. In addition, survivin expression is often increased with HER2 overexpression leading to inhibition of caspase activation. There is also recent evidence to suggest HER2 can directly influence apoptosis by translocation to the mitochondria to inhibit cytochrome c release. HER2 can also suppress cellular reaction to death ligands, especially TRAIL-induced apoptosis. Elucidation of the mechanisms of apoptotic suppression by HER2 suggest that clinical treatment will likely need to target multiple components of these pathways as there is redundancy in HER2-mediated cell survival. Several therapies have attempted to target Bcl-2 proteins that have promising pre-clinical results. Next-generation HER2 targeting therapies include irreversible pan-ERBB inhibitors and antibody-drug conjugates, such as T-DM1 that has very promising clinical results thus far. Further investigation should include elucidating mechanisms of resistance to HER2-targeted therapies and targeting of multiple components of HER2-mediated cell survival.
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Affiliation(s)
- Richard L Carpenter
- Division of Surgical Sciences, Department of Surgery, Duke University School of Medicine, Durham, North Carolina 27710, USA
| | - Hui-Wen Lo
- Division of Surgical Sciences, Department of Surgery, Duke University School of Medicine, Durham, North Carolina 27710, USA; Duke Cancer Institute, Duke University School of Medicine, Durham, North Carolina 27710, USA
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Williams KP, Allensworth JL, Ingram SM, Smith GR, Aldrich AJ, Sexton JZ, Devi GR. Quantitative high-throughput efficacy profiling of approved oncology drugs in inflammatory breast cancer models of acquired drug resistance and re-sensitization. Cancer Lett 2013; 337:77-89. [PMID: 23689139 DOI: 10.1016/j.canlet.2013.05.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 04/30/2013] [Accepted: 05/13/2013] [Indexed: 10/26/2022]
Abstract
Although there is no standard treatment protocol for inflammatory breast cancer (IBC), multi-modality treatment has improved survival. In this study we profiled the NCI approved oncology drug set in a qHTS format to identify those that are efficacious in basal type and ErbB2 overexpressing IBC models. Further, we characterized the sensitivity of an acquired therapeutic resistance model to the oncology drugs. We observed that lapatinib-induced acquired resistance in SUM149 cells led to cross-resistance to other targeted- and chemotherapeutic drugs. Removal of the primary drug to which the model was developed led to re-sensitization to multiple drugs to a degree comparable to the parental cell line; this coincided with the cells regaining the ability to accumulate ROS and reduced expression of anti-apoptotic factors and the antioxidant SOD2. We suggest that our findings provide a unique IBC model system for gaining an understanding of acquired therapeutic resistance and the effect of redox adaptation on anti-cancer drug efficacy.
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Affiliation(s)
- Kevin P Williams
- Biomanufacturing Research Institute and Technology Enterprise (BRITE), North Carolina Central University, Durham, NC 27707, USA.
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40
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Bevans M, Wehrlen L, Castro K, Prince P, Shelburne N, Soeken K, Zabora J, Wallen GR. A problem-solving education intervention in caregivers and patients during allogeneic hematopoietic stem cell transplantation. J Health Psychol 2013; 19:602-17. [PMID: 23471761 DOI: 10.1177/1359105313475902] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The aim of this study was to determine the effect of problem-solving education on self-efficacy and distress in informal caregivers of allogeneic hematopoietic stem cell transplantation patients. Patient/caregiver teams attended three 1-hour problem-solving education sessions to help cope with problems during hematopoietic stem cell transplantation. Primary measures included the Cancer Self-Efficacy Scale-transplant and Brief Symptom Inventory-18. Active caregivers reported improvements in self-efficacy (p < 0.05) and distress (p < 0.01) post-problem-solving education; caregiver responders also reported better health outcomes such as fatigue. The effect of problem-solving education on self-efficacy and distress in hematopoietic stem cell transplantation caregivers supports its inclusion in future interventions to meet the multifaceted needs of this population.
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41
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Owens TW, Gilmore AP, Streuli CH, Foster FM. Inhibitor of Apoptosis Proteins: Promising Targets for Cancer Therapy. ACTA ACUST UNITED AC 2013; Suppl 14. [PMID: 25328816 PMCID: PMC4201371 DOI: 10.4172/2157-2518.s14-004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cancer is a disease in which normal physiological processes are imbalanced, leading to tumour formation, metastasis and eventually death. Recent biological advances have led to the advent of targeted therapies to complement traditional chemotherapy and radiotherapy. However, a major problem still facing modern medicine is resistance to therapies, whether targeted or traditional. Therefore, to increase the survival rates of cancer patients, it is critical that we continue to identify molecular targets for therapeutic intervention. The Inhibitor of Apoptosis (IAP) proteins act downstream of a broad range of stimuli, such as cytokines and extracellular matrix interactions, to regulate cell survival, proliferation and migration. These processes are dysregulated during tumourigenesis and are critical to the metastatic spread of the disease. IAPs are commonly upregulated in cancer and have therefore become the focus of much research as both biomarkers and therapeutic targets. Here we discuss the roles that IAPs may play in cancer, and the potential benefits and pitfalls that targeting IAPs could have in the clinic.
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Affiliation(s)
- Thomas W Owens
- Wellcome Trust Centre for Cell Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester, M13 9PT, UK ; Department of Physiology, Sydney Medical School & Bosch Institute, the University of Sydney, NSW, Australia
| | - Andrew P Gilmore
- Wellcome Trust Centre for Cell Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester, M13 9PT, UK
| | - Charles H Streuli
- Wellcome Trust Centre for Cell Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester, M13 9PT, UK
| | - Fiona M Foster
- Wellcome Trust Centre for Cell Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester, M13 9PT, UK
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Wang S, Bai L, Lu J, Liu L, Yang CY, Sun H. Targeting inhibitors of apoptosis proteins (IAPs) for new breast cancer therapeutics. J Mammary Gland Biol Neoplasia 2012; 17:217-28. [PMID: 23054134 PMCID: PMC3534930 DOI: 10.1007/s10911-012-9265-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 08/07/2012] [Indexed: 01/07/2023] Open
Abstract
Apoptosis resistance is a hallmark of human cancer. Research in the last two decades has identified key regulators of apoptosis, including inhibitor of apoptosis proteins (IAPs). These critical apoptosis regulators have been targeted for the development of new cancer therapeutics. In this article, we will discuss three members of IAP proteins, namely XIAP, cIAP1 and cIAP2, as cancer therapeutic targets and the progress made in developing new cancer therapeutic agents to target these IAP proteins.
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Affiliation(s)
- Shaomeng Wang
- Comprehensive Cancer Center and Departments of Internal Medicine, Pharmacology and Medicinal Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.
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LaCasse EC. Pulling the plug on a cancer cell by eliminating XIAP with AEG35156. Cancer Lett 2012; 332:215-24. [PMID: 22776562 DOI: 10.1016/j.canlet.2012.06.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 06/28/2012] [Accepted: 06/30/2012] [Indexed: 12/22/2022]
Abstract
XIAP, the X-linked inhibitor of apoptosis, is the best example of an endogenous cellular suppressor of apoptosis. XIAP is effective because it directly limits the activity of several critical death-inducing caspases, notably caspase-3, -7 and -9, either by direct enzyme inhibition or through ubiquitin-mediated proteasomal degradation. Furthermore, XIAP acts simultaneously at several nodes in the apoptotic cascade, blocking both the intrinsic and extrinsic death pathways, and thereby preventing feed-forward amplification loops that would otherwise lead to cell death. XIAP over-expression, or increased activity, is associated with cancer progression, resistance to therapy and poor prognosis. Targeting XIAP gene expression by antisense oligonucleotides, or other approaches, demonstrates anti-cancer effects with XIAP down-regulation. These early preclinical studies led to the development of a clinical candidate mixed-backbone antisense oligonucleotide, AEG35156, against XIAP for the treatment of cancer. Published clinical results for the first-in-class and first-in-human trials of AEG35156 are summarized herein, including single agent and combination chemotherapy phase-I or -II trials for solid tumors, lymphoma, and acute myeloid leukemia. These trials demonstrate the safety of AEG35156, as well as some initial promising signs of anti-cancer activity.
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Affiliation(s)
- Eric C LaCasse
- Apoptosis Research Centre, CHEO RI2, Children's Hospital of Eastern Ontario, 401 Smyth Rd., Ottawa, ON, Canada K1H 8L1.
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44
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Parra E. Inhibition of JNK-1 by small interfering RNA induces apoptotic signaling in PC-3 prostate cancer cells. Int J Mol Med 2012; 30:923-30. [PMID: 22766602 DOI: 10.3892/ijmm.2012.1055] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Accepted: 04/26/2012] [Indexed: 11/05/2022] Open
Abstract
Previous studies have shown that c-Jun-N-terminal kinase-1 (JNK-1) is involved in the transformation of primary fibroblasts and plays a role in tumor cell growth. A number of observations suggest that JNK-1 is a growth promoting factor in prostate cancer cells and blocking its function may induce apoptosis. To test this further, we used a small interfering RNA (siRNA) against JNK-1 mRNA that efficiently inhibits JNK-1 expression in the prostate cancer cell line, PC-3. The application of siRNA against JNK-1 decreased the expression of JNK-1 and affected the expression of p21, XIAP and Bcl-2, but had no effect on the expression of VEGF. In contrast, a control scramble siRNA did not affect the expression of the above indicated proteins. The downregulation of JNK-1 expression at both the mRNA and protein levels was detected by reverse transcription-polymerase chain reaction (RT-PCR) and western blot analysis. Cell proliferation inhibition rates were determined by the MTT assay. The effect of JNK-1-siRNA on cell cycle distribution and cell apoptosis was determined by flow cytometry, DNA fragmentation and caspase activity. Our data showed that siRNA against JNK-1 mRNA, could efficiently suppress the expression of JNK-1 in PC-3 cells. After 5 days of transfection, the cell death rate was 52%, the apoptotic rate 26% and the viability rate 22%. In conclusion, downregulation of JNK-1 expression by siRNA against JNK-1 mRNA induces apoptotic signaling in prostate cancer PC-3 cells. The use of siRNA against JNK-1 as a novel approach to cancer therapy deserves further investigation.
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Affiliation(s)
- Eduardo Parra
- Biomedical Experimental Laboratory, Faculty of Sciences, University of Tarapaca, Arica, Chile.
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Thiel KW, Hernandez LI, Dassie JP, Thiel WH, Liu X, Stockdale KR, Rothman AM, Hernandez FJ, McNamara JO, Giangrande PH. Delivery of chemo-sensitizing siRNAs to HER2+-breast cancer cells using RNA aptamers. Nucleic Acids Res 2012; 40:6319-37. [PMID: 22467215 PMCID: PMC3401474 DOI: 10.1093/nar/gks294] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Human epidermal growth factor receptor 2 (HER2) expression in breast cancer is associated with an aggressive phenotype and poor prognosis, making it an appealing therapeutic target. Trastuzumab, an HER2 antibody-based inhibitor, is currently the leading targeted treatment for HER2(+)-breast cancers. Unfortunately, many patients inevitably develop resistance to the therapy, highlighting the need for alternative targeted therapeutic options. In this study, we used a novel, cell-based selection approach for isolating 'cell-type specific', 'cell-internalizing RNA ligands (aptamers)' capable of delivering therapeutic small interfering RNAs (siRNAs) to HER2-expressing breast cancer cells. RNA aptamers with the greatest specificity and internalization potential were covalently linked to siRNAs targeting the anti-apoptotic gene, Bcl-2. We demonstrate that, when applied to cells, the HER2 aptamer-Bcl-2 siRNA conjugates selectively internalize into HER2(+)-cells and silence Bcl-2 gene expression. Importantly, Bcl-2 silencing sensitizes these cells to chemotherapy (cisplatin) suggesting a potential new therapeutic approach for treating breast cancers with HER2(+)-status. In summary, we describe a novel cell-based selection methodology that enables the identification of cell-internalizing RNA aptamers for targeting therapeutic siRNAs to HER2-expressing breast cancer cells. The future refinement of this technology may promote the widespread use of RNA-based reagents for targeted therapeutic applications.
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Affiliation(s)
- Kristina W Thiel
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
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Fulda S, Vucic D. Targeting IAP proteins for therapeutic intervention in cancer. Nat Rev Drug Discov 2012; 11:109-24. [PMID: 22293567 DOI: 10.1038/nrd3627] [Citation(s) in RCA: 627] [Impact Index Per Article: 52.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Evasion of apoptosis is one of the crucial acquired capabilities used by cancer cells to fend off anticancer therapies. Inhibitor of apoptosis (IAP) proteins exert a range of biological activities that promote cancer cell survival and proliferation. X chromosome-linked IAP is a direct inhibitor of caspases - pro-apoptotic executioner proteases - whereas cellular IAP proteins block the assembly of pro-apoptotic protein signalling complexes and mediate the expression of anti-apoptotic molecules. Furthermore, mutations, amplifications and chromosomal translocations of IAP genes are associated with various malignancies. Among the therapeutic strategies that have been designed to target IAP proteins, the most widely used approach is based on mimicking the IAP-binding motif of second mitochondria-derived activator of caspase (SMAC), which functions as an endogenous IAP antagonist. Alternative strategies include transcriptional repression and the use of antisense oligonucleotides. This Review provides an update on IAP protein biology as well as current and future perspectives on targeting IAP proteins for therapeutic intervention in human malignancies.
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Affiliation(s)
- Simone Fulda
- Institute for Experimental Cancer Research in Pediatrics, Goethe University Frankfurt, Komturstr. 3a, 60528 Frankfurt, Germany.
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Astanehe A, Finkbeiner MR, Krzywinski M, Fotovati A, Dhillon J, Berquin IM, Mills GB, Marra MA, Dunn SE. MKNK1 is a YB-1 target gene responsible for imparting trastuzumab resistance and can be blocked by RSK inhibition. Oncogene 2012; 31:4434-46. [PMID: 22249268 DOI: 10.1038/onc.2011.617] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Trastuzumab (Herceptin) resistance is a major obstacle in the treatment of patients with HER2-positive breast cancers. We recently reported that the transcription factor Y-box binding protein-1 (YB-1) leads to acquisition of resistance to trastuzumab in a phosphorylation-dependent manner that relies on p90 ribosomal S6 kinase (RSK). To explore how this may occur we compared YB-1 target genes between trastuzumab-sensitive cells (BT474) and those with acquired resistance (HR5 and HR6) using genome-wide chromatin immunoprecipitation sequencing (ChIP-sequencing), which identified 1391 genes uniquely bound by YB-1 in the resistant cell lines. We then examined differences in protein expression and phosphorylation between these cell lines using the Kinexus Kinex antibody microarrays. Cross-referencing these two data sets identified the mitogen-activated protein kinase-interacting kinase (MNK) family as potentially being involved in acquired resistance downstream from YB-1. MNK1 and MNK2 were subsequently shown to be overexpressed in the resistant cell lines; however, only the former was a YB-1 target based on ChIP-PCR and small interfering RNA (siRNA) studies. Importantly, loss of MNK1 expression using siRNA enhanced sensitivity to trastuzumab. Further, MNK1 overexpression was sufficient to confer resistance to trastuzumab in cells that were previously sensitive. We then developed a de novo model of acquired resistance by exposing BT474 cells to trastuzumab for 60 days (BT474LT). Similar to the HR5/HR6 cells, the BT474LT cells had elevated MNK1 levels and were dependent on it for survival. In addition, we demonstrated that RSK phosphorylated MNK1, and that this phosphorylation was required for ability of MNK1 to mediate resistance to trastuzumab. Furthermore, inhibition of RSK with the small molecule BI-D1870 repressed the MNK1-mediated trastuzumab resistance. In conclusion, this unbiased integrated approach identified MNK1 as a player in mediating trastuzumab resistance as a consequence of YB-1 activation, and demonstrated RSK inhibition as a means to overcome recalcitrance to trastuzumab.
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Affiliation(s)
- A Astanehe
- Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
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Bai L, McEachern D, Yang CY, Lu J, Sun H, Wang S. LRIG1 modulates cancer cell sensitivity to Smac mimetics by regulating TNFα expression and receptor tyrosine kinase signaling. Cancer Res 2012; 72:1229-38. [PMID: 22241084 DOI: 10.1158/0008-5472.can-11-2428] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Smac mimetics block inhibitor of apoptosis proteins to trigger TNFα-dependent apoptosis in cancer cells. However, only a small subset of cancer cells seem to be sensitive to Smac mimetics and even sensitive cells can develop resistance. Herein, we elucidated mechanisms underlying the intrinsic and acquired resistance of cancer cells to Smac mimetics. In vitro and in vivo investigations revealed that the expression of the cell surface protein LRIG1, a negative regulator of receptor tyrosine kinases (RTK), is downregulated in resistant derivatives of breast cancer cells sensitive to Smac mimetics. RNA interference-mediated downregulation of LRIG1 markedly attenuated the growth inhibitory activity of the Smac mimetic SM-164 in drug-sensitive breast and ovarian cancer cells. Furthermore, LRIG1 downregulation attenuated TNFα gene expression induced by Smac mimetics and increased the activity of multiple RTKs, including c-Met and Ron. The multitargeted tyrosine kinase inhibitors Crizotinib and GSK1363089 greatly enhanced the anticancer activity of SM-164 in all resistant cell derivatives, with the combination of SM-164 and GSK1363089 also completely inhibiting the outgrowth of resistant tumors in vivo. Together, our findings show that both upregulation of RTK signaling and attenuated TNFα expression caused by LRIG1 downregulation confers resistance to Smac mimetics, with implications for a rational combination strategy.
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Affiliation(s)
- Longchuan Bai
- University of Michigan Comprehensive Cancer Center and Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
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Estrogen promotes breast cancer cell survival in an inhibitor of apoptosis (IAP)-dependent manner. Discov Oncol 2011; 1:127-35. [PMID: 21152357 DOI: 10.1007/s12672-010-0018-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
The estrogen receptor (ER) is a major prognostic and therapeutic marker that is expressed in nearly 75% of breast tumors. We have previously shown that the presence of inflammatory mediators can alter the genomic function of the estrogen receptor (ER) in a gene specific manner. In particular, 17β-estradiol (E2) works in combination with the pro-inflammatory cytokines to enhance the expression of a number of pro-survival factors, including the Inhibitor of Apoptosis (IAP) family member, cIAP2. Here we confirm that mRNA and protein levels for cIAP2, but not the related family members cIAP1 and XIAP, are highly up-regulated in MCF-7 breast cancer cells by E2 and cytokines. Similar regulation of cIAP2 is evident in other ER positive but not ER negative cell lines. In agreement with its role as a pro-survival factor, cIAP2 is highly expressed in a subset of invasive breast carcinomas but not in normal breast tissue or ductal carcinoma in situ. Antagonizing IAPs with mimetics of SMAC, which is a known endogenous IAP antagonist, or knockdown of IAPs by siRNA led to greater cell death by TNFα and prevented E2 from promoting cell survival. In addition, a SMAC mimetic reversed TNFα resistance in ER positive breast cancer cells that express high levels of endogenous IAPs. In summary, our findings indicate a new mechanism by which E2 allows breast cancer cells to evade cell death and suggest that an antagonist of IAPs may be a potential therapeutic option for a subset of ER positive breast tumors.
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Diermeier-Daucher S, Breindl S, Buchholz S, Ortmann O, Brockhoff G. Modular anti-EGFR and anti-Her2 targeting of SK-BR-3 and BT474 breast cancer cell lines in the presence of ErbB receptor-specific growth factors. Cytometry A 2011; 79:684-93. [PMID: 21786419 DOI: 10.1002/cyto.a.21107] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Revised: 06/07/2011] [Accepted: 06/23/2011] [Indexed: 11/07/2022]
Abstract
Over the last decade, a number of monoclonal antibodies and small molecule inhibitors emerged as potent therapeutic agents in the treatment of Her2/neu overexpressing breast cancer. Numerous patients, however, do not adequately respond to anti-epidermal growth factor receptor (EGFR)/Her2 receptor targeting. Receptor- and, in turn, growth-stimulating effects, which potentially hamper antiproliferative cell treatment, have barely been investigated. BT474 and SK-BR-3 breast cancer cell lines were treated with Trastuzumab, Pertuzumab, and Lapatinib alone using different combinations and concentrations. Moreover, epidermal growth factor (EGF) or heregulin (HRG) was added to reveal potential growth factor-mediated compensatory effects. Receptor and intracellular signaling were analyzed as a function of cell treatment. Read-out parameters were cell proliferation and apoptosis. BT474 cells were efficiently driven into quiescence by Trastuzumab, but not by Pertuzumab treatment. Simultaneous EGF or HRG administration, however, restored the BT474 cell proliferation capacity. In contrast, neither therapeutic antibody treatment caused a profound inhibition of SK-BR-3 cell-cycle progress. Lapatinib turned out to be the most potent cell-cycle inhibitor in both cell lines even though its impact was significantly abrogated in the presence of EGF and HRG. The compensatory effect of EGF on Lapatinib-induced cell-cycle inhibition was reversed by Trastuzumab as well as by Pertuzumab treatment. Most importantly, HRG-caused compensation of Lapatinib-induced cell-cycle exit was reversed by Pertuzumab but not by Trastuzumab. Apparently, multiple anti-EGFR/Her2 targeting by using Trastuzumab, Pertuzumab, and Lapatinib more efficiently affects receptor function (interaction and activation) and consequently enhances their antiproliferative capacity. Growth inhibition by anticancer drugs targeted to Her/ErbB receptors, however, can be significantly undermined in the presence of EGF and in particular by HRG treatment, which suggests that specific therapeutic growth factor sequestration might further enhance anti-EGFR/Her2 targeting.
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