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Yang J, Wu Y, Zhu Q, Qu X, Ou H, Liu H, Wei Y, Ge D, Lu C, Jiang B, Song X. Discovery of a first-in-class protein degrader for the c-ros oncogene 1 (ROS1). Bioorg Chem 2024; 150:107590. [PMID: 38955003 DOI: 10.1016/j.bioorg.2024.107590] [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: 05/12/2024] [Revised: 06/16/2024] [Accepted: 06/22/2024] [Indexed: 07/04/2024]
Abstract
The c-ros oncogene 1 (ROS1), an oncogenic driver, is known to induce non-small cell lung cancer (NSCLC) when overactivated, particularly through the formation of fusion proteins. Traditional targeted therapies focus on inhibiting ROS1 activity with ROS 1 inhibitors to manage cancer progression. However, a new strategy involving the design of protein degraders offers a more potent approach by completely degrading ROS1 fusion oncoproteins, thereby effectively blocking their kinase activity and enhancing anti-tumour potential. Utilizing PROteolysis-TArgeting Chimera (PROTAC) technology and informed by molecular docking and rational design, we report the first ROS1-specific PROTAC, SIAIS039. This degrader effectively targets multiple ROS1 fusion oncoproteins (CD74-ROS1, SDC4-ROS1 and SLC34A2-ROS1) in engineered Ba/F3 cells and HCC78 cells, demonstrating anti-tumour effects against ROS1 fusion-driven cancer cells. It suppresses cell proliferation, induces cell cycle arrest, and apoptosis, and inhibits clonogenicity. The anti-tumour efficacy of SIAIS039 surpasses two approved drugs, crizotinib and entrectinib, and matches that of the top inhibitors, including lorlatinib and taletrectinib. Mechanistic studies confirm that the degradation induced by 039 requires the participation of ROS1 ligands and E3 ubiquitin ligases, and involves the proteasome and ubiquitination. In addition, 039 exhibited excellent oral bioavailability in a mouse xenograft model, highlighting its potential for clinical application. In conclusion, our study presents a promising and novel therapeutic strategy for ROS1 fusion-positive NSCLC by targeting ROS1 fusion oncoproteins for degradation, laying the foundation for the development of further PROTAC and offering hope for patients with ROS1 fusion-positive NSCLC.
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Affiliation(s)
- Jiawen Yang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China; Shanghai Clinical Research and Trial Center, Shanghai 201210, China
| | - Yifan Wu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China; School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Qiaoliang Zhu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Xiaojuan Qu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China; School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Hongyue Ou
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China; School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Haixia Liu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yongqi Wei
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Di Ge
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Chunlai Lu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
| | - Biao Jiang
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China; CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China.
| | - Xiaoling Song
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China.
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2
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R P, Shanmugam G, Rakshit S, Sarkar K. Role of Wiskott Aldrich syndrome protein in haematological malignancies: genetics, molecular mechanisms and therapeutic strategies. Pathol Res Pract 2024; 253:155026. [PMID: 38118219 DOI: 10.1016/j.prp.2023.155026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/07/2023] [Accepted: 12/07/2023] [Indexed: 12/22/2023]
Abstract
As patients continue to suffer from lymphoproliferative and myeloproliferative diseases known as haematopoietic malignancies can affect the bone marrow, blood, lymph nodes, and lymphatic and non-lymphatic organs. Despite advances in the current treatment, there is still a significant challenge for physicians to improve the therapy of HMs. WASp is an important regulator of actin polymerization and the involvement of WASp in transcription is thought to be linked to the DNA damage response and repair. In some studies, severe immunodeficiency and lymphoid malignancy are caused by WASp mutations or the absence of WASp and these mutations in WAS can alter the function and/or expression of the intracellular protein. Loss-of-function and Gain-of-function mutations in WASp have an impact on cancer malignancies' incidence and onset. Recent studies suggest that depending on the clinical or experimental situation, WASPs and WAVEs can operate as a suppressor or enhancers for cancer malignancy. These dual functions of WASPs and WAVEs in cancer likely arose from their multifaceted role in cells that could be targeted for anticancer drug development. The significant role and their association of WASp in Chronic myeloid leukaemia, Juvenile myelomonocytic leukaemia and T-cell lymphoma is discussed. In this review, we described the structure and function of WASp and its family mechanism, analysing major regulatory effectors and summarising the clinical relevance and drugs that specifically target WASp in disease treatment in various hematopoietic malignancies by different approaches.
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Affiliation(s)
- Pradeep R
- Department of Biotechnology, SRM Institute of Science and Technology, Katangulathur, Tamil Nadu 603203, India
| | - Geetha Shanmugam
- Department of Biotechnology, SRM Institute of Science and Technology, Katangulathur, Tamil Nadu 603203, India
| | - Sudeshna Rakshit
- Department of Biotechnology, SRM Institute of Science and Technology, Katangulathur, Tamil Nadu 603203, India
| | - Koustav Sarkar
- Department of Biotechnology, SRM Institute of Science and Technology, Katangulathur, Tamil Nadu 603203, India.
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3
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Chakraborty S, Bhat AM, Mushtaq I, Luan H, Kalluchi A, Mirza S, Storck MD, Chaturvedi N, Lopez-Guerrero JA, Llombart-Bosch A, Machado I, Scotlandi K, Meza JL, Ghosal G, Coulter DW, Jordan Rowley M, Band V, Mohapatra BC, Band H. EHD1-dependent traffic of IGF-1 receptor to the cell surface is essential for Ewing sarcoma tumorigenesis and metastasis. Commun Biol 2023; 6:758. [PMID: 37474760 PMCID: PMC10359273 DOI: 10.1038/s42003-023-05125-1] [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: 02/27/2023] [Accepted: 07/10/2023] [Indexed: 07/22/2023] Open
Abstract
Overexpression of the EPS15 Homology Domain containing 1 (EHD1) protein has been linked to tumorigenesis but whether its core function as a regulator of intracellular traffic of cell surface receptors plays a role in oncogenesis remains unknown. We establish that EHD1 is overexpressed in Ewing sarcoma (EWS), with high EHD1 mRNA expression specifying shorter patient survival. ShRNA-knockdown and CRISPR-knockout with mouse Ehd1 rescue established a requirement of EHD1 for tumorigenesis and metastasis. RTK antibody arrays identified IGF-1R as a target of EHD1 regulation in EWS. Mechanistically, we demonstrate a requirement of EHD1 for endocytic recycling and Golgi to plasma membrane traffic of IGF-1R to maintain its surface expression and downstream signaling. Conversely, EHD1 overexpression-dependent exaggerated oncogenic traits require IGF-1R expression and kinase activity. Our findings define the RTK traffic regulation as a proximal mechanism of EHD1 overexpression-dependent oncogenesis that impinges on IGF-1R in EWS, supporting the potential of IGF-1R and EHD1 co-targeting.
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Affiliation(s)
- Sukanya Chakraborty
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Genetics, Cell Biology & Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Aaqib M Bhat
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Genetics, Cell Biology & Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Insha Mushtaq
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Incyte Corporation, Wilmington, DE, USA
| | - Haitao Luan
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Achyuth Kalluchi
- Department of Genetics, Cell Biology & Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Sameer Mirza
- Department of Genetics, Cell Biology & Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain, UAE
| | - Matthew D Storck
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Nagendra Chaturvedi
- Department of Pediatrics, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | | | - Antonio Llombart-Bosch
- Department of Pathology, University of Valencia, Avd. Blasco Ibáñez 15, 46010, Valencia, Spain
| | - Isidro Machado
- Department of Pathology, University of Valencia, Avd. Blasco Ibáñez 15, 46010, Valencia, Spain
| | - Katia Scotlandi
- Laboratory of Experimental Oncology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Jane L Meza
- Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Gargi Ghosal
- Department of Genetics, Cell Biology & Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Donald W Coulter
- Department of Pediatrics, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - M Jordan Rowley
- Department of Genetics, Cell Biology & Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Vimla Band
- Department of Genetics, Cell Biology & Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Bhopal C Mohapatra
- Department of Genetics, Cell Biology & Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
| | - Hamid Band
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Department of Genetics, Cell Biology & Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
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4
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Ma D, Liu P, Hu C, Zhou Z, Wang P, Wang Y, Zhang Y, Ran Y, Li P, Zhao J, Wang J, Zhang C, Tang L. Intracellular angiopoietin-1 promotes TKI-resistance via activation of JAK/STAT5 pathway in chronic myeloid leukemia. Oncogene 2023; 42:124-137. [PMID: 36385374 DOI: 10.1038/s41388-022-02536-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 10/10/2022] [Accepted: 10/28/2022] [Indexed: 11/18/2022]
Abstract
Drug resistance from BCR-ABL tyrosine kinase inhibitors (TKIs) and other chemotherapeutics results in treatment failure and disease progression in chronic myeloid leukemia (CML). However, the mechanism is still uncertain. In this study, we investigated the role of angiopoietin-1 (ANG-1) as a potential prognostic factor for drug resistance in CML. Both intracellular and secretory ANG-1 (iANG-1 and sANG-1) were overexpressed in multidrug-resistant CML samples. The IC50 value was higher in primary CD34+ CD38- cells with more ANG-1. Silencing ANG-1significantly sensitized three TKI-resistant CML cell lines to imatinib (IM) while recombinant human ANG-1 failed to retain cell survival in vitro. This indicated the important role of iANG-1 as opposed to sANG-1 in CML drug resistance. Moreover, a similar effect was observed in xenograft mice models bearing ANG-1-silenced CML cells. Subsequently, pathway analysis and protein validation experiments showed activation of the JAK/STAT pathway and augmentation of STAT5a phosphorylation in ANG-1 restored CML cells. Upstream Src phosphorylation, which plays a crucial role in CML drug resistance, was also upregulated as a key event in iANG-1-related JAK/STAT pathway activation. In conclusion, our study elucidated a new BCR-ABL independent molecular mechanism induced by intracytoplasmic ANG-1 overexpression as a potential strategy for overcoming CML resistance.
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Affiliation(s)
- Dan Ma
- Department of Hematology, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, China.,Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang, 550004, China
| | - Ping Liu
- Department of Hematology, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, China
| | - Chujiao Hu
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang, 550004, China
| | - Zhen Zhou
- Department of Pharmacy, Affiliated Baiyun Hospital of Guizhou Medical University, Guiyang, 550014, China
| | - Ping Wang
- Department of Hematology, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, China
| | - Yan Wang
- Department of Hematology, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, China
| | - Yaming Zhang
- Department of Hematology, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, China
| | - Yunsheng Ran
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang, 550004, China
| | - Pinghao Li
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, China
| | - Jiangyuan Zhao
- Department of Hematology, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, China
| | - Jishi Wang
- Department of Hematology, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, China.
| | - Chengliang Zhang
- Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
| | - Lei Tang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang, 550004, China.
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5
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Liu H, Mi Q, Ding X, Lin C, Liu L, Ren C, Shen S, Shao Y, Chen J, Zhou Y, Ji L, Zhang H, Bai F, Yang X, Yin Q, Jiang B. Discovery and characterization of novel potent BCR-ABL degraders by conjugating allosteric inhibitor. Eur J Med Chem 2022; 244:114810. [DOI: 10.1016/j.ejmech.2022.114810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/04/2022]
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6
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Nussinov R, Zhang M, Maloney R, Liu Y, Tsai CJ, Jang H. Allostery: Allosteric Cancer Drivers and Innovative Allosteric Drugs. J Mol Biol 2022; 434:167569. [PMID: 35378118 PMCID: PMC9398924 DOI: 10.1016/j.jmb.2022.167569] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/11/2022] [Accepted: 03/25/2022] [Indexed: 01/12/2023]
Abstract
Here, we discuss the principles of allosteric activating mutations, propagation downstream of the signals that they prompt, and allosteric drugs, with examples from the Ras signaling network. We focus on Abl kinase where mutations shift the landscape toward the active, imatinib binding-incompetent conformation, likely resulting in the high affinity ATP outcompeting drug binding. Recent pharmacological innovation extends to allosteric inhibitor (GNF-5)-linked PROTAC, targeting Bcr-Abl1 myristoylation site, and broadly, allosteric heterobifunctional degraders that destroy targets, rather than inhibiting them. Designed chemical linkers in bifunctional degraders can connect the allosteric ligand that binds the target protein and the E3 ubiquitin ligase warhead anchor. The physical properties and favored conformational state of the engineered linker can precisely coordinate the distance and orientation between the target and the recruited E3. Allosteric PROTACs, noncompetitive molecular glues, and bitopic ligands, with covalent links of allosteric ligands and orthosteric warheads, increase the effective local concentration of productively oriented and placed ligands. Through covalent chemical or peptide linkers, allosteric drugs can collaborate with competitive drugs, degrader anchors, or other molecules of choice, driving innovative drug discovery.
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Affiliation(s)
- Ruth Nussinov
- Computational Structural Biology Section, Frederick National Laboratory for Cancer Research in the Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, MD 21702, USA; Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
| | - Mingzhen Zhang
- Computational Structural Biology Section, Frederick National Laboratory for Cancer Research in the Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, MD 21702, USA
| | - Ryan Maloney
- Computational Structural Biology Section, Frederick National Laboratory for Cancer Research in the Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, MD 21702, USA
| | - Yonglan Liu
- Computational Structural Biology Section, Frederick National Laboratory for Cancer Research in the Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, MD 21702, USA
| | - Chung-Jung Tsai
- Computational Structural Biology Section, Frederick National Laboratory for Cancer Research in the Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, MD 21702, USA
| | - Hyunbum Jang
- Computational Structural Biology Section, Frederick National Laboratory for Cancer Research in the Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, MD 21702, USA
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7
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Recent Advances in PROTACs for Drug Targeted Protein Research. Int J Mol Sci 2022; 23:ijms231810328. [PMID: 36142231 PMCID: PMC9499226 DOI: 10.3390/ijms231810328] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/04/2022] [Accepted: 09/05/2022] [Indexed: 01/30/2023] Open
Abstract
Proteolysis-targeting chimera (PROTAC) is a heterobifunctional molecule. Typically, PROTAC consists of two terminals which are the ligand of the protein of interest (POI) and the specific ligand of E3 ubiquitin ligase, respectively, via a suitable linker. PROTAC degradation of the target protein is performed through the ubiquitin–proteasome system (UPS). The general process is that PROTAC binds to the target protein and E3 ligase to form a ternary complex and label the target protein with ubiquitination. The ubiquitinated protein is recognized and degraded by the proteasome in the cell. At present, PROTAC, as a new type of drug, has been developed to degrade a variety of cancer target proteins and other disease target proteins, and has shown good curative effects on a variety of diseases. For example, PROTACs targeting AR, BR, BTK, Tau, IRAK4, and other proteins have shown unprecedented clinical efficacy in cancers, neurodegenerative diseases, inflammations, and other fields. Recently, PROTAC has entered a phase of rapid development, opening a new field for biomedical research and development. This paper reviews the various fields of targeted protein degradation by PROTAC in recent years and summarizes and prospects the hot targets and indications of PROTAC.
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8
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Proteolysis-targeting chimeras: A promising technique in cancer therapy for gaining insights into tumor development. Cancer Lett 2022; 539:215716. [DOI: 10.1016/j.canlet.2022.215716] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 04/10/2022] [Accepted: 04/26/2022] [Indexed: 12/15/2022]
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9
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Pokorny R, Stenehjem DD, Gilreath JA. Impact of metformin on tyrosine kinase inhibitor response in chronic myeloid leukemia. J Oncol Pharm Pract 2022; 28:916-923. [PMID: 35132891 PMCID: PMC9047107 DOI: 10.1177/10781552221077254] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Objective Oral tyrosine kinase inhibitors (TKIs) are first line therapy for chronic myeloid leukemia (CML). A complete cytogenetic response (CCyR) correlates with increased overall survival, however only 66%–88% of patients achieve CCyR after one year of TKI treatment. Because TKI therapy alone cannot eliminate CML stem cells, strategies aimed at achieving faster and deeper responses are needed to improve long-term survival. Metformin is a widely prescribed glucose-lowering agent for patients with diabetes and in preclinical studies, has been shown to suppress cell viability, induce apoptosis, and downregulate the mTORC1 signaling pathway in imatinib resistant CML cell lines (K562R). This study aims to investigate the utility of metformin added to TKI therapy in patients with CML. Data Sources An observational study at an academic medical center (Salt Lake City, UT) was performed for adults with newly diagnosed, chronic-phase CML to evaluate attainment of CCyR from TKI therapy with or without concomitant metformin use. Descriptive analyses were used to describe baseline characteristics and attainment of response to TKI therapy. Data Summary Fifty-nine patients were evaluated. One hundred percent (5 of 5) in the metformin group and 73.6% (39 of 54) in the non-metformin group achieved CCyR. Approximately 20% of patients in both groups relapsed (defined by a loss of CCyR during study) after a median 34.5 months of follow-up. Conclusions Future research is warranted to validate these findings and determine the utility of metformin added to TKI therapy.
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Affiliation(s)
- Rebecca Pokorny
- Department of Pharmacy, 20270Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - David D Stenehjem
- Department of Pharmacy Practice and Pharmaceutical Sciences, 14713University of Minnesota, College of Pharmacy, Duluth, MN, USA
| | - Jeffrey A Gilreath
- Department of Pharmacotherapy, College of Pharmacy and 20270Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
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10
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Xie T, Saleh T, Rossi P, Miller D, Kalodimos CG. Imatinib can act as an Allosteric Activator of Abl Kinase. J Mol Biol 2022; 434:167349. [PMID: 34774565 PMCID: PMC8752476 DOI: 10.1016/j.jmb.2021.167349] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/15/2021] [Accepted: 11/05/2021] [Indexed: 02/01/2023]
Abstract
Imatinib is an ATP-competitive inhibitor of Bcr-Abl kinase and the first drug approved for chronic myelogenous leukemia (CML) treatment. Here we show that imatinib binds to a secondary, allosteric site located in the myristoyl pocket of Abl to function as an activator of the kinase activity. Abl transitions between an assembled, inhibited state and an extended, activated state. The equilibrium is regulated by the conformation of the αΙ helix, which is located nearby the allosteric pocket. Imatinib binding to the allosteric pocket elicits an αΙ helix conformation that is not compatible with the assembled state, thereby promoting the extended state and stimulating the kinase activity. Although in wild-type Abl the catalytic pocket has a much higher affinity for imatinib than the allosteric pocket does, the two binding affinities are comparable in Abl variants carrying imatinib-resistant mutations in the catalytic site. A previously isolated imatinib-resistant mutation in patients appears to be mediating its function by increasing the affinity of imatinib for the allosteric pocket, providing a hitherto unknown mechanism of drug resistance. Our results highlight the benefit of combining imatinib with allosteric inhibitors to maximize their inhibitory effect on Bcr-Abl.
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Affiliation(s)
- Tao Xie
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, United States
| | - Tamjeed Saleh
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, United States
| | - Paolo Rossi
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, United States
| | - Darcie Miller
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, United States
| | - Charalampos G Kalodimos
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, United States.
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11
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Liu H, Ding X, Liu L, Mi Q, Zhao Q, Shao Y, Ren C, Chen J, Kong Y, Qiu X, Elvassore N, Yang X, Yin Q, Jiang B. Discovery of novel BCR-ABL PROTACs based on the cereblon E3 ligase design, synthesis, and biological evaluation. Eur J Med Chem 2021; 223:113645. [PMID: 34217059 DOI: 10.1016/j.ejmech.2021.113645] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/09/2021] [Accepted: 06/09/2021] [Indexed: 12/23/2022]
Abstract
Protein degradation is a promising strategy for drug development. Proteolysis-targeting chimeras (PROTACs) hijacking the E3 ligase cereblon (CRBN) exhibit enormous potential and universal degradation performance due to the small molecular weight of CRBN ligands. In this study, the CRBN-recruiting PROTACs were explored on the degradation of oncogenic fusion protein BCR-ABL, which drives the pathogenesis of chronic myeloid leukemia (CML). A series of novel PROTACs were synthesized by conjugating BCR-ABL inhibitor dasatinib to the CRBN ligand including pomalidomide and lenalidomide, and the extensive structure-activity relationship (SAR) studies were performed focusing on optimization of linker parameters. Therein, we uncovered that pomalidomide-based degrader 17 (SIAIS056), possessing sulfur-substituted carbon chain linker, exhibits the most potent degradative activity in vitro and favorable pharmacokinetics in vivo. Besides, degrader 17 also degrades a variety of clinically relevant resistance-conferring mutations of BCR-ABL. Furthermore, degrader 17 induces significant tumor regression against K562 xenograft tumors. Our study indicates that 17 as an efficacious BCR-ABL degrader warrants intensive investigation for the future treatment of BCR-ABL+ leukemia.
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Affiliation(s)
- Haixia Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China; Shanghai Institute for Advanced Immunochemical Studies, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xinyu Ding
- Shanghai Institute for Advanced Immunochemical Studies, China; School of Life Science and Technology, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Linyi Liu
- Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, School of Pharmaceutical Science, University of South China, Hengyang City, 421001, China
| | - Qianglong Mi
- Shanghai Institute for Advanced Immunochemical Studies, China; School of Life Science and Technology, China
| | - Quanju Zhao
- Shanghai Institute for Advanced Immunochemical Studies, China
| | - YuBao Shao
- Department of Histology and Embryology, Anhui Medical University, Hefei, 230032, China
| | - Chaowei Ren
- Shanghai Institute for Advanced Immunochemical Studies, China; School of Life Science and Technology, China
| | - Jinju Chen
- Shanghai Institute for Advanced Immunochemical Studies, China
| | - Ying Kong
- Shanghai Institute for Advanced Immunochemical Studies, China
| | - Xing Qiu
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | | | - Xiaobao Yang
- Shanghai Institute for Advanced Immunochemical Studies, China.
| | - Qianqian Yin
- Shanghai Institute for Advanced Immunochemical Studies, China.
| | - Biao Jiang
- Shanghai Institute for Advanced Immunochemical Studies, China; CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.
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12
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Xiao MC, Qian H, Huang CK, Zheng BN, Yan FZ, Liu F, Zhang X, Chen SJ, Luo C, Xie WF. Imatinib inhibits the malignancy of hepatocellular carcinoma by suppressing autophagy. Eur J Pharmacol 2021; 906:174217. [PMID: 34087223 DOI: 10.1016/j.ejphar.2021.174217] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 05/20/2021] [Accepted: 05/27/2021] [Indexed: 02/07/2023]
Abstract
Hepatocellular carcinoma (HCC) is one of the most common cancers and is associated with high morbidity and mortality rates. Recent research indicated that imatinib, a selective tyrosine kinase inhibitor, suppressed the growth of hepatocellular carcinoma. However, the effect of imatinib on HCC and its mechanism remain under investigated. In this study, we demonstrated that imatinib inhibited the proliferation, migration and invasion of HCC cells in vitro and exerted antitumour effects on HCC xenografts in mice in vivo. Imatinib treatment decreased the phosphorylation of AKT and increased the levels of both p62 (protein sequestosome 1) and LC3 (microtubule-associated protein 1A/1B-light chain 3) in HCC cells and HCC xenografts. Scanning confocal microscopy analysis with a mRFP-GFP-LC3 reporter and transmission electron microscopy analysis revealed that imatinib suppressed the autophagic flux by obstructing the formation of autolysosomes. Moreover, imatinib reversed the autophagy induced by sorafenib, and combined treatment with imatinib and sorafenib exerted a synergetic effect in HCC cells compared with monotherapy. Our collective data suggested that imatinib may target HCC by acting as an inhibitor of both tyrosine kinase and autophagy; here, we propose that imatinib could be a promising therapeutic agent for HCC in the clinic.
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Affiliation(s)
- Meng-Chao Xiao
- Tongji University School of Medicine, Shanghai, 200120, China
| | - Hui Qian
- Department of Gastroenterology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China.
| | - Chen-Kai Huang
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Bai-Nan Zheng
- Department of Gastroenterology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China
| | - Fang-Zhi Yan
- Department of Gastroenterology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China
| | - Fang Liu
- Department of Gastroenterology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China
| | - Xin Zhang
- Department of Gastroenterology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China
| | - Shi-Jie Chen
- Drug Discovery and Design Center, CAS Key Laboratory of Receptor Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences (CAS), Shanghai, 201203, China
| | - Cheng Luo
- Drug Discovery and Design Center, CAS Key Laboratory of Receptor Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences (CAS), Shanghai, 201203, China
| | - Wei-Fen Xie
- Tongji University School of Medicine, Shanghai, 200120, China; Department of Gastroenterology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China.
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13
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Jiang L, Wang Y, Li Q, Tu Z, Zhu S, Tu S, Zhang Z, Ding K, Lu X. Design, synthesis, and biological evaluation of Bcr-Abl PROTACs to overcome T315I mutation. Acta Pharm Sin B 2021; 11:1315-1328. [PMID: 34094836 PMCID: PMC8148061 DOI: 10.1016/j.apsb.2020.11.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 10/27/2020] [Accepted: 11/02/2020] [Indexed: 02/08/2023] Open
Abstract
Bcr-Abl threonine 315 to isoleucine 315 (T315I) gatekeeper mutation induced drug resistance remains an unmet clinical challenge for the treatment of chronic myeloid leukemia (CML). Chemical degradation of Bcr-AblT315I protein has become a potential strategy to overcome drug resistance. Herein, we first described the design, synthesis, and evaluation of a new class of selective Bcr-AblT315I proteolysis-targeting chimeric (PROTAC) degraders based on GZD824 (reported as Bcr-AblT315I inhibitor by our group). One of the degrader 7o with 6-member carbon chain linkage with pomalidomide exhibits the most potent degradation efficacy with DR of 69.89% and 94.23% at 100 and 300 nmol/L, respectively, and has an IC50 value of 26.8 ± 9.7 nmol/L against Ba/F3T315I cells. Further, 7o also displays substantial tumor regression against Ba/F3-Bcr-AblT315I xenograft model in vivo.
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Key Words
- ALL, acute lymphoblastic leukemia
- CML
- CML, chronic myeloid leukemia
- CRBN, cereblon
- Clinical resistance
- Co-IP, co-immunoprecipitation
- DR, degradation rate
- Degradation
- IC50, cellular inhibition
- LSCs, leukemic stem cells
- NMPA, National Medical Products Administration
- PROTAC
- PROTAC, proteolysis-targeting chimeric
- Ph+, Philadelphia chromosome
- T315I mutation
- T315I, threonine 315 to isoleucine 315
- TGI, tumor growth inhibition
- VHL, von Hippel-Lindau
- cIAP1, cellular inhibitor of apoptosis protein 1
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14
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PROTACs to address the challenges facing small molecule inhibitors. Eur J Med Chem 2020; 210:112993. [PMID: 33189436 DOI: 10.1016/j.ejmech.2020.112993] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/01/2020] [Accepted: 11/01/2020] [Indexed: 02/07/2023]
Abstract
Small molecule inhibitors of proteins represent important medicines and critical chemical tools to investigate the biology of the target proteins. Advances in various -omics technologies have fueled the pace of discovery of disease-relevant proteins. Translating these discoveries into human benefits requires us to develop specific chemicals to inhibit the proteins. However, traditional small molecule inhibitors binding to orthosteric or allosteric sites face significant challenges. These challenges include drug selectivity, therapy resistance as well as drugging undruggable proteins and multi-domain proteins. To address these challenges, PROteolysis TArgeting Chimera (PROTAC) has been proposed. PROTACs are heterobifunctional molecules containing a binding ligand for a protein of interest and E3 ligase-recruiting ligand that are connected through a chemical linker. Binding of a PROTAC to its target protein will bring a E3 ligase in close proximity to initiate polyubiquitination of the target protein ensuing its proteasome-mediated degradation. Unlike small molecule inhibitors, PROTACs achieve target protein degradation in its entirety in a catalytical fashion. In this review, we analyze recent advances in PROTAC design to discuss how PROTACs can address the challenges facing small molecule inhibitors to potentially deliver next-generation medicines and chemical tools with high selectivity and efficacy. We also offer our perspectives on the future promise and potential limitations facing PROTACs. Investigations to overcome these limitations of PROTACs will further help realize the promise of PROTACs for human benefits.
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15
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He Y, Khan S, Huo Z, Lv D, Zhang X, Liu X, Yuan Y, Hromas R, Xu M, Zheng G, Zhou D. Proteolysis targeting chimeras (PROTACs) are emerging therapeutics for hematologic malignancies. J Hematol Oncol 2020; 13:103. [PMID: 32718354 PMCID: PMC7384229 DOI: 10.1186/s13045-020-00924-z] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 06/23/2020] [Indexed: 12/11/2022] Open
Abstract
Proteolysis targeting chimeras (PROTACs) are heterobifunctional small molecules that utilize the ubiquitin proteasome system (UPS) to degrade proteins of interest (POI). PROTACs are potentially superior to conventional small molecule inhibitors (SMIs) because of their unique mechanism of action (MOA, i.e., degrading POI in a sub-stoichiometric manner), ability to target “undruggable” and mutant proteins, and improved target selectivity. Therefore, PROTACs have become an emerging technology for the development of novel targeted anticancer therapeutics. In fact, some of these reported PROTACs exhibit unprecedented efficacy and specificity in degrading various oncogenic proteins and have advanced to various stages of preclinical and clinical development for the treatment of cancer and hematologic malignancy. In this review, we systematically summarize the known PROTACs that have the potential to be used to treat various hematologic malignancies and discuss strategies to improve the safety of PROTACs for clinical application. Particularly, we propose to use the latest human pan-tissue single-cell RNA sequencing data to identify hematopoietic cell type-specific/selective E3 ligases to generate tumor-specific/selective PROTACs. These PROTACs have the potential to become safer therapeutics for hematologic malignancies because they can overcome some of the on-target toxicities of SMIs and PROTACs.
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Affiliation(s)
- Yonghan He
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Sajid Khan
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Zhiguang Huo
- Department of Biostatistics, College of Public Health & Health Professions and College of Medicine, University of Florida, Gainesville, FL, USA
| | - Dongwen Lv
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Xuan Zhang
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Xingui Liu
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Yaxia Yuan
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Robert Hromas
- Department of Medicine, The University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Mingjiang Xu
- Department of Molecular Medicine, College of Medicine, The University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Guangrong Zheng
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Daohong Zhou
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA.
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16
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Zhao Q, Ren C, Liu L, Chen J, Shao Y, Sun N, Sun R, Kong Y, Ding X, Zhang X, Xu Y, Yang B, Yin Q, Yang X, Jiang B. Discovery of SIAIS178 as an Effective BCR-ABL Degrader by Recruiting Von Hippel–Lindau (VHL) E3 Ubiquitin Ligase. J Med Chem 2019; 62:9281-9298. [DOI: 10.1021/acs.jmedchem.9b01264] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Quanju Zhao
- Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | | | - Linyi Liu
- Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | | | - Yubao Shao
- Department of Histology and Embryology, Anhui Medical University, Hefei 230032, China
| | - Ning Sun
- Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Renhong Sun
- Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | | | | | | | | | | | | | | | - Biao Jiang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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17
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Burslem GM, Schultz AR, Bondeson DP, Eide CA, Savage Stevens SL, Druker BJ, Crews CM. Targeting BCR-ABL1 in Chronic Myeloid Leukemia by PROTAC-Mediated Targeted Protein Degradation. Cancer Res 2019; 79:4744-4753. [PMID: 31311809 DOI: 10.1158/0008-5472.can-19-1236] [Citation(s) in RCA: 125] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 06/04/2019] [Accepted: 07/12/2019] [Indexed: 01/09/2023]
Abstract
Although the use of ATP-competitive tyrosine kinase inhibitors of oncoprotein BCR-ABL1 has enabled durable responses in patients with chronic myeloid leukemia (CML), issues of drug resistance and residual leukemic stem cells remain. To test whether the degradation of BCR-ABL1 kinase could offer improved response, we developed a series of proteolysis-targeting chimera (PROTAC) that allosterically target BCR-ABL1 protein and recruit the E3 ligase Von Hippel-Lindau, resulting in ubiquitination and subsequent degradation of the oncogenic fusion protein. In both human CML K562 cells and murine Ba/F3 cells expressing BCR-ABL1, lead compound GMB-475 induced rapid proteasomal degradation and inhibition of downstream biomarkers, such as STAT5, and showed increased sensitivity compared with diastereomeric controls lacking degradation activity. Notably, GMB-475 inhibited the proliferation of certain clinically relevant BCR-ABL1 kinase domain point mutants and further sensitized Ba/F3 BCR-ABL1 cells to inhibition by imatinib, while demonstrating no toxicity toward Ba/F3 parental cells. Reverse phase protein array analysis suggested additional differences in levels of phosphorylated SHP2, GAB2, and SHC associated with BCR-ABL1 degradation. Importantly, GMB-475 reduced viability and increased apoptosis in primary CML CD34+ cells, with no effect on healthy CD34+ cells at identical concentrations. GMB-475 degraded BCR-ABL1 and reduced cell viability in primary CML stem cells. Together, these findings suggest that combined BCR-ABL1 kinase inhibition and protein degradation may represent a strategy to address BCR-ABL1-dependent drug resistance, and warrant further investigation into the eradication of persistent leukemic stem cells, which rely on neither the presence nor the activity of the BCR-ABL1 protein for survival. SIGNIFICANCE: Small-molecule-induced degradation of BCR-ABL1 in CML provides an advantage over inhibition and provides insights into CML stem cell biology. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/79/18/4744/F1.large.jpg.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Cell Proliferation/drug effects
- Drug Resistance, Neoplasm
- Fusion Proteins, bcr-abl/antagonists & inhibitors
- Humans
- K562 Cells
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Mice
- Neoplastic Stem Cells/drug effects
- Neoplastic Stem Cells/metabolism
- Neoplastic Stem Cells/pathology
- Protein Array Analysis
- Protein Kinase Inhibitors/pharmacology
- Proteolysis/drug effects
- Tumor Cells, Cultured
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Affiliation(s)
- George M Burslem
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut
| | - Anna Reister Schultz
- Division of Hematology and Medical Oncology, Oregon Health and Science University Knight Cancer Institute, Portland, Oregon
| | - Daniel P Bondeson
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut
| | - Christopher A Eide
- Division of Hematology and Medical Oncology, Oregon Health and Science University Knight Cancer Institute, Portland, Oregon
- Howard Hughes Medical Institute, Portland, Oregon
| | - Samantha L Savage Stevens
- Division of Hematology and Medical Oncology, Oregon Health and Science University Knight Cancer Institute, Portland, Oregon
| | - Brian J Druker
- Division of Hematology and Medical Oncology, Oregon Health and Science University Knight Cancer Institute, Portland, Oregon
- Howard Hughes Medical Institute, Portland, Oregon
| | - Craig M Crews
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut.
- Departments of Chemistry and Pharmacology, Yale University, New Haven, Connecticut
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18
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Li J, Lu L, Zhang YH, Xu Y, Liu M, Feng K, Chen L, Kong X, Huang T, Cai YD. Identification of leukemia stem cell expression signatures through Monte Carlo feature selection strategy and support vector machine. Cancer Gene Ther 2019; 27:56-69. [PMID: 31138902 DOI: 10.1038/s41417-019-0105-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/28/2019] [Accepted: 05/04/2019] [Indexed: 01/09/2023]
Abstract
Acute myeloid leukemia (AML) is a type of blood cancer characterized by the rapid growth of immature white blood cells from the bone marrow. Therapy resistance resulting from the persistence of leukemia stem cells (LSCs) are found in numerous patients. Comparative transcriptome studies have been previously conducted to analyze differentially expressed genes between LSC+ and LSC- cells. However, these studies mainly focused on a limited number of genes with the most obvious expression differences between the two cell types. We developed a computational approach incorporating several machine learning algorithms, including Monte Carlo feature selection (MCFS), incremental feature selection (IFS), support vector machine (SVM), Repeated Incremental Pruning to Produce Error Reduction (RIPPER), to identify gene expression features specific to LSCs. One thousand 0ne hudred fifty-nine features (genes) were first identified, which can be used to build the optimal SVM classifier for distinguishing LSC+ and LSC- cells. Among these 1159 genes, the top 17 genes were identified as LSC-specific biomarkers. In addition, six classification rules were produced by RIPPER algorithm. The subsequent literature review on these features/genes and the classification rules and functional enrichment analyses of the 1159 features/genes confirmed the relevance of extracted genes and rules to the characteristics of LSCs.
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Affiliation(s)
- JiaRui Li
- Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, P. R. China.,School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China
| | - Lin Lu
- Department of Radiology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Yu-Hang Zhang
- Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, P. R. China
| | - YaoChen Xu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, P. R. China
| | - Min Liu
- College of Information Engineering, Shanghai Maritime University, Shanghai, 201306, P. R. China
| | - KaiYan Feng
- Department of Computer Science, Guangdong AIB Polytechnic, Guangzhou, 510507, P. R. China
| | - Lei Chen
- College of Information Engineering, Shanghai Maritime University, Shanghai, 201306, P. R. China.,Shanghai Key Laboratory of PMMP, East China Normal University, Shanghai, 200241, P. R. China
| | - XiangYin Kong
- Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, P. R. China.
| | - Tao Huang
- Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, P. R. China.
| | - Yu-Dong Cai
- School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China.
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19
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BCL2 inhibitor ABT-199 and JNK inhibitor SP600125 exhibit synergistic cytotoxicity against imatinib-resistant Ph+ ALL cells. Biochem Biophys Rep 2018; 15:69-75. [PMID: 30073206 PMCID: PMC6068087 DOI: 10.1016/j.bbrep.2018.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 06/28/2018] [Accepted: 07/02/2018] [Indexed: 02/08/2023] Open
Abstract
Imatinib (IMT), a specific tyrosine kinase inhibitor (TKI), has drastically changed the treatment strategy for Ph+ ALL (Philadelphia chromosome-positive acute lymphoblastic leukemia). However, TKI resistance remains a serious problem for patient prognosis. Here, a Ph+ ALL cell line NphA2 and the IMT-resistant subline NphA2/STIR were analyzed to identify a potential novel treatment strategy. We also examined other Ph+ ALL cells, MR87 and its IMT-resistant subline, MR87/STIR. IMT induced apoptosis of NphA2 and MR87 but had no effect on resistant sublines. Increased phosphorylated ERK and BCL2, but not BCL-XL, were observed in NphA2/STIR compared with NphA2. NphA2/STIR but not NphA2 was moderately sensitive to U0126, an ERK inhibitor. Interestingly, SP600125, a JNK inhibitor, was potent in cell growth inhibition and apoptosis induction of both parental and IMT-resistant NphA2 and MR87 cells. Moreover, NphA2 and MR87 and their IMT-resistant sublines were sensitive to ABT-199, a specific BCL2 inhibitor. The combination of SP600125 and ABT-199 synergistically suppressed both parental and IMT-resistant cells, including one with T315I mutation, suggesting that Ph+ ALL exhibits high sensitivity to ABT-199 and SP600125 regardless of TKI resistance. This combination might be a possible therapeutic strategy for Ph+ ALL in the future. SP600125 JNK inhibitor is cytotoxic against imatinib-resistant Ph+ ALL cells. BCl2 inhibitor ABT 199 exhibits cytotoxicity against imatinib-resistant Ph+ ALL. SP600125 and ABT199 are synergistic in imatinib-resistant Ph+ ALL with T315I. Some leukemia cells are sensitive to MCL1 inhibitor maritoclax but not to ABT-199.
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20
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Gao M, Huang ZL, Tao K, Xiao Q, Wang X, Cao WX, Xu M, Hu J, Feng WL. Depression of oncogenecity by dephosphorylating and degrading BCR-ABL. Oncotarget 2018; 8:3304-3314. [PMID: 27926512 PMCID: PMC5356883 DOI: 10.18632/oncotarget.13754] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 11/21/2016] [Indexed: 11/25/2022] Open
Abstract
Aberrant phosphorylation and overexpression of BCR-ABL fusion protein are responsible for the main pathogenesis in chronic myeloid leukemia (CML). Phosphorylated BCR-ABL Y177 recruits GRB2 adaptor and triggers leukemic RAS-MAPK and PI3K-AKT signals. In this study, we engineered a SPOA system to dephosphorylate and degrade BCR-ABL by targeting BCR-ABL Y177. We tested its effect on BCR-ABL phosphorylation and expression, as well as cell proliferation and apoptosis in CML cells. We found that SPOA remarkably dephosphorylated BCR-ABL Y177, prevented GRB2 recruitment, and uncoupled RAS-MAPK and PI3K-AKT signals. Meanwhile, SPOA degraded BCR-ABL oncoprotein in ubiquitin-independent manner and depressed the signal transduction of STAT5 and CRKL by BCR-ABL. Furthermore, SPOA inhibited proliferation and induced apoptosis in CML cells and depressed the oncogenecity of K562 cells in mice. These results provide evidence that dephosphorylating and degrading oncogenic BCR-ABL offer an alternative CML therapy.
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Affiliation(s)
- Miao Gao
- Department of Clinical Hematology, Key Laboratory of Laboratory Medical Diagnostics Designated by The Ministry of Education, Chongqing Medical University, Chongqing, People's Republic of China
| | - Zheng-Lan Huang
- Department of Clinical Hematology, Key Laboratory of Laboratory Medical Diagnostics Designated by The Ministry of Education, Chongqing Medical University, Chongqing, People's Republic of China
| | - Kun Tao
- Department of Immunology, Molecular Medicine and Cancer Research, Chongqing Medical University, Chongqing, People's Republic of China
| | - Qing Xiao
- Department of Hematology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Xin Wang
- Department of Hematology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Wei-Xi Cao
- Department of Clinical Hematology, Key Laboratory of Laboratory Medical Diagnostics Designated by The Ministry of Education, Chongqing Medical University, Chongqing, People's Republic of China
| | - Min Xu
- Department of Clinical Hematology, Key Laboratory of Laboratory Medical Diagnostics Designated by The Ministry of Education, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jing Hu
- Department of Clinical Hematology, Key Laboratory of Laboratory Medical Diagnostics Designated by The Ministry of Education, Chongqing Medical University, Chongqing, People's Republic of China
| | - Wen-Li Feng
- Department of Clinical Hematology, Key Laboratory of Laboratory Medical Diagnostics Designated by The Ministry of Education, Chongqing Medical University, Chongqing, People's Republic of China
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21
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Avilés-Vázquez S, Chávez-González A, Hidalgo-Miranda A, Moreno-Lorenzana D, Arriaga-Pizano L, Sandoval-Esquivel MÁ, Ayala-Sánchez M, Aguilar R, Alfaro-Ruiz L, Mayani H. Global gene expression profiles of hematopoietic stem and progenitor cells from patients with chronic myeloid leukemia: the effect of in vitro culture with or without imatinib. Cancer Med 2017; 6:2942-2956. [PMID: 29030909 PMCID: PMC5727298 DOI: 10.1002/cam4.1187] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 08/11/2017] [Accepted: 08/14/2017] [Indexed: 01/04/2023] Open
Abstract
In this study, we determined the gene expression profiles of bone marrow‐derived cell fractions, obtained from normal subjects and Chronic Myeloid Leukemia (CML) patients, that were highly enriched for hematopoietic stem (HSCs) and progenitor (HPCs) cells. Our results indicate that the profiles of CML HSCs and HPCs were closer to that of normal progenitors, whereas normal HSCs showed the most different expression profile of all. We found that the expression profiles of HSCs and HPCs from CML marrow were closer to each other than those of HSCs and HPCs from normal marrow. The major biologic processes dysregulated in CML cells included DNA repair, cell cycle, chromosome condensation, cell adhesion, and the immune response. We also determined the genomic changes in both normal and CML progenitor cells under culture conditions, and found that several genes involved in cell cycle, steroid biosynthesis, and chromosome segregation were upregulated, whereas genes involved in transcription regulation and apoptosis were downregulated. Interestingly, these changes were the same, regardless of the addition of Imatinib (IM) to the culture. Finally, we identified three genes—PIEZO2, RXFP1, and MAMDC2‐ that are preferentially expressed by CML primitive cells and that encode for cell membrane proteins; thus, they could be used as biomarkers for CML stem cells.
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Affiliation(s)
- Sócrates Avilés-Vázquez
- Oncology Research Unit, Oncology Hospital, National Medical Center, Mexican Institute for Social Security, Mexico City, Mexico
| | - Antonieta Chávez-González
- Oncology Research Unit, Oncology Hospital, National Medical Center, Mexican Institute for Social Security, Mexico City, Mexico
| | | | - Dafne Moreno-Lorenzana
- Oncology Research Unit, Oncology Hospital, National Medical Center, Mexican Institute for Social Security, Mexico City, Mexico
| | - Lourdes Arriaga-Pizano
- Immunochemistry Research Unit, National Medical Center, Mexican Institute for Social Security, Mexico City, Mexico
| | - Miguel Á Sandoval-Esquivel
- Oncology Research Unit, Oncology Hospital, National Medical Center, Mexican Institute for Social Security, Mexico City, Mexico
| | - Manuel Ayala-Sánchez
- Department of Hematology, La Raza Medical Center, Mexican Institute for Social Security, Mexico City, Mexico
| | - Rafael Aguilar
- Department of Hip Surgery, Villa Coapa General Hospital, Mexican Institute for Social Security, Mexico City, Mexico
| | | | - Hector Mayani
- Oncology Research Unit, Oncology Hospital, National Medical Center, Mexican Institute for Social Security, Mexico City, Mexico
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22
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BCR-ABL1-induced downregulation of WASP in chronic myeloid leukemia involves epigenetic modification and contributes to malignancy. Cell Death Dis 2017; 8:e3114. [PMID: 29022901 PMCID: PMC5680580 DOI: 10.1038/cddis.2017.458] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 08/21/2017] [Indexed: 01/26/2023]
Abstract
Chronic myeloid leukemia (CML) is a myeloproliferative disease caused by the BCR–ABL1 tyrosine kinase (TK). The development of TK inhibitors (TKIs) revolutionized the treatment of CML patients. However, TKIs are not effective to those at advanced phases when amplified BCR–ABL1 levels and increased genomic instability lead to secondary oncogenic modifications. Wiskott–Aldrich syndrome protein (WASP) is an important regulator of signaling transduction in hematopoietic cells and was shown to be an endogenous inhibitor of the c-ABL TK. Here, we show that the expression of WASP decreases with the progression of CML, inversely correlates with the expression of BCR–ABL1 and is particularly low in blast crisis. Enforced expression of BCR–ABL1 negatively regulates the expression of WASP. Decreased expression of WASP is partially due to DNA methylation of the proximal WASP promoter. Importantly, lower levels of WASP in CML advanced phase patients correlate with poorer overall survival (OS) and is associated with TKI response. Interestingly, enforced expression of WASP in BCR–ABL1-positive K562 cells increases the susceptibility to apoptosis induced by TRAIL or chemotherapeutic drugs and negatively modulates BCR–ABL1-induced tumorigenesis in vitro and in vivo. Taken together, our data reveal a novel molecular mechanism that operates in BCR–ABL1-induced tumorigenesis that can be used to develop new strategies to help TKI-resistant, CML patients in blast crisis (BC).
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Du Y, Chen B. Detection approaches for multidrug resistance genes of leukemia. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:1255-1261. [PMID: 28458519 PMCID: PMC5402920 DOI: 10.2147/dddt.s134529] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Leukemia is a clonal malignant hematopoietic stem cell disease. It is the sixth most lethal cancer and accounts for 4% of all cancers. The main form of treatment for leukemia is chemotherapy. While some cancer types with a higher incidence than leukemia, such as lung and gastric cancer, have shown a sharp decline in mortality rates in recent years, leukemia has not followed this trend. Drug resistance is often regarded as the main clinical obstacle to effective chemotherapy in patients diagnosed with leukemia. Many resistance mechanisms have now been identified, and multidrug resistance (MDR) is considered the most important and prevalent mechanism involved in the failure of chemotherapy in leukemia. In order to reverse MDR and improve leukemia prognosis, effective detection methods are needed to identify drug resistance genes at initial diagnosis. This article provides a comprehensive overview of published approaches for the detection of MDR in leukemia. Identification of relevant MDR genes and methods for early detection of these genes will be needed in order to treat leukemia more effectively.
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Affiliation(s)
- Ying Du
- Department of Hematology and Oncology (Key Department of Jiangsu Medicine), School of Medicine, Zhongda Hospital, Southeast University, Nanjing, Jiangsu Province, People's Republic of China
| | - Baoan Chen
- Department of Hematology and Oncology (Key Department of Jiangsu Medicine), School of Medicine, Zhongda Hospital, Southeast University, Nanjing, Jiangsu Province, People's Republic of China
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Huang H, Weng H, Dong B, Zhao P, Zhou H, Qu L. Oridonin Triggers Chaperon-mediated Proteasomal Degradation of BCR-ABL in Leukemia. Sci Rep 2017; 7:41525. [PMID: 28128329 PMCID: PMC5270248 DOI: 10.1038/srep41525] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 12/20/2016] [Indexed: 12/30/2022] Open
Abstract
Inducing degradation of oncoproteins by small molecule compounds has the potential to avoid drug resistance and therefore deserves to be exploited for new therapies. Oridonin is a natural compound with promising antitumor efficacy that can trigger the degradation of oncoproteins; however, the direct cellular targets and underlying mechanisms remain unclear. Here we report that oridonin depletes BCR-ABL through chaperon-mediated proteasomal degradation in leukemia. Mechanistically, oridonin poses oxidative stress in cancer cells and directly binds to cysteines of HSF1, leading to the activation of this master regulator of the chaperone system. The resulting induction of HSP70 and ubiquitin proteins and the enhanced binding to CHIP E3 ligase hence target BCR-ABL for ubiquitin-proteasome degradation. Both wild-type and mutant forms of BCR-ABL can be efficiently degraded by oridonin, supporting its efficacy observed in cultured cells as well as mouse tumor xenograft assays with either imatinib-sensitive or -resistant cells. Collectively, our results identify a novel mechanism by which oridonin induces rapid degradation of BCR-ABL as well as a novel pharmaceutical activator of HSF1 that represents a promising treatment for leukemia.
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Affiliation(s)
- Huilin Huang
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory for Biocontrol, Sun Yat-sen University, Guangzhou 510275, China
| | - Hengyou Weng
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory for Biocontrol, Sun Yat-sen University, Guangzhou 510275, China
| | - Bowen Dong
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory for Biocontrol, Sun Yat-sen University, Guangzhou 510275, China
| | - Panpan Zhao
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory for Biocontrol, Sun Yat-sen University, Guangzhou 510275, China
| | - Hui Zhou
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory for Biocontrol, Sun Yat-sen University, Guangzhou 510275, China
| | - Lianghu Qu
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory for Biocontrol, Sun Yat-sen University, Guangzhou 510275, China
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Casiopeina III-Ea, a copper-containing small molecule, inhibits the in vitro growth of primitive hematopoietic cells from chronic myeloid leukemia. Leuk Res 2016; 52:8-19. [PMID: 27855286 DOI: 10.1016/j.leukres.2016.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 09/01/2016] [Accepted: 11/01/2016] [Indexed: 11/21/2022]
Abstract
Several novel compounds have been developed for the treatment of different types of leukemia. In the present study, we have assessed the in vitro effects of Casiopeina III-Ea, a copper-containing small molecule, on cells from patients with Chronic Myeloid Leukemia (CML). We included primary CD34+ Lineage-negative (Lin-) cells selected from CML bone marrow, as well as the K562 and MEG01 cell lines. Bone marrow cells obtained from normal individuals - both total mononuclear cells as well as CD34+ Lin- cells- were used as controls. IC50 corresponded to 0.5μM for K562 cells, 0.63μM for MEG01 cells, 0.38μM for CML CD34+ lin- cells, and 1.0μM for normal CD34+ lin- cells. Proliferation and expansion were also inhibited to significantly higher extents in cultures of CML cells as compared to their normal counterparts. All these effects seemed to occur via a bcr-abl transcription-independent mechanism that involved a delay in cell division, an increase in cell death, generation of Reactive Oxygen Species and changes in cell cycle. Our results demonstrate that Casiopeina III-Ea possesses strong antileukemic activity in vitro, and warrant further preclinical (animal) studies to assess such effects in vivo.
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The role of microenvironment and immunity in drug response in leukemia. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:414-426. [DOI: 10.1016/j.bbamcr.2015.08.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/13/2015] [Accepted: 08/01/2015] [Indexed: 12/22/2022]
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Lai AC, Toure M, Hellerschmied D, Salami J, Jaime-Figueroa S, Ko E, Hines J, Crews CM. Modulares PROTAC-Design zum Abbau von onkogenem BCR-ABL. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507634] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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28
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Lai AC, Toure M, Hellerschmied D, Salami J, Jaime-Figueroa S, Ko E, Hines J, Crews CM. Modular PROTAC Design for the Degradation of Oncogenic BCR-ABL. Angew Chem Int Ed Engl 2015; 55:807-10. [PMID: 26593377 DOI: 10.1002/anie.201507634] [Citation(s) in RCA: 435] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 10/07/2015] [Indexed: 01/01/2023]
Abstract
Proteolysis Targeting Chimera (PROTAC) technology is a rapidly emerging alternative therapeutic strategy with the potential to address many of the challenges currently faced in modern drug development programs. PROTAC technology employs small molecules that recruit target proteins for ubiquitination and removal by the proteasome. The synthesis of PROTAC compounds that mediate the degradation of c-ABL and BCR-ABL by recruiting either Cereblon or Von Hippel Lindau E3 ligases is reported. During the course of their development, we discovered that the capacity of a PROTAC to induce degradation involves more than just target binding: the identity of the inhibitor warhead and the recruited E3 ligase largely determine the degradation profiles of the compounds; thus, as a starting point for PROTAC development, both the target ligand and the recruited E3 ligase should be varied to rapidly generate a PROTAC with the desired degradation profile.
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Affiliation(s)
- Ashton C Lai
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, CT 06511 (USA)
| | - Momar Toure
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, CT 06511 (USA)
| | - Doris Hellerschmied
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, CT 06511 (USA)
| | - Jemilat Salami
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, CT 06511 (USA)
| | - Saul Jaime-Figueroa
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, CT 06511 (USA)
| | - Eunhwa Ko
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, CT 06511 (USA)
| | - John Hines
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, CT 06511 (USA)
| | - Craig M Crews
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, CT 06511 (USA).
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Matchett KB, Lappin TR. Concise Reviews: Cancer Stem Cells: From Concept to Cure. Stem Cells 2014; 32:2563-70. [DOI: 10.1002/stem.1798] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 07/14/2014] [Indexed: 12/17/2022]
Affiliation(s)
- K. B. Matchett
- Centre for Cancer Research and Cell Biology; Queen's University Belfast; Belfast United Kingdom
| | - T. R. Lappin
- Centre for Cancer Research and Cell Biology; Queen's University Belfast; Belfast United Kingdom
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