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Huang Y, Liu W, Zhao C, Shi X, Zhao Q, Jia J, Wang A. Targeting cyclin-dependent kinases: From pocket specificity to drug selectivity. Eur J Med Chem 2024; 275:116547. [PMID: 38852339 DOI: 10.1016/j.ejmech.2024.116547] [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: 03/01/2024] [Revised: 05/28/2024] [Accepted: 05/28/2024] [Indexed: 06/11/2024]
Abstract
The development of selective modulators of cyclin-dependent kinases (CDKs), a kinase family with numerous members and functional variations, is a significant preclinical challenge. Recent advancements in crystallography have revealed subtle differences in the highly conserved CDK pockets. Exploiting these differences has proven to be an effective strategy for achieving excellent drug selectivity. While previous reports briefly discussed the structural features that lead to selectivity in individual CDK members, attaining inhibitor selectivity requires consideration of not only the specific structures of the target CDK but also the features of off-target members. In this review, we summarize the structure-activity relationships (SARs) that influence selectivity in CDK drug development and analyze the pocket features that lead to selectivity using molecular-protein binding models. In addition, in recent years, novel CDK modulators have been developed, providing more avenues for achieving selectivity. These cases were also included. We hope that these efforts will assist in the development of novel CDK drugs.
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Affiliation(s)
- Yaoguang Huang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Wenwu Liu
- School of Pharmaceutical Sciences, Tsinghua University, Haidian Dist., Beijing, 100084, People's Republic of China
| | - Changhao Zhao
- Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang, 110840, People's Republic of China
| | - Xiaoyu Shi
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Qingchun Zhao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China; Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang, 110840, People's Republic of China.
| | - Jingming Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China.
| | - Anhua Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China.
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2
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Peng Y, Zhou Y, Zhou X, Jia X, Zhong Y. A disproportionality analysis of CDK4/6 inhibitors in the FDA Adverse Event Reporting System (FAERS). Expert Opin Drug Saf 2024:1-9. [PMID: 39083396 DOI: 10.1080/14740338.2024.2387323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 06/19/2024] [Accepted: 06/27/2024] [Indexed: 08/02/2024]
Abstract
OBJECTIVE The FDA Adverse Event Reporting System (FAERS) was used to mine and evaluate adverse events (AEs) associated with cyclin-dependent kinase (CDK) 4/6 inhibitors, thereby providing a reference for clinical rational drug use. METHODS AE data related to CDK4/6 inhibitors from the first quarter of 2015 to the first quarter of 2023 were acquired from FAERS, while the signal mining was processed using the reporting odds ratio (ROR) method and Bayesian confidence propagation neural network (BCPNN) method. RESULTS The number of AE reports for CDK4/6 inhibitors was, respectively, 132,494 for palbociclib, 56,151 for ribociclib, and 7,014 for abemaciclib. The corresponding numbers of AE signals were 319, 517, and 59, with the number of involved System Organ Class (SOC) being 23, 23, and 15, mainly involving blood and lymphatic system disorders, respiratory, thoracic and mediastinal disorders, hepatobiliary disorders, skin and subcutaneous tissue disorders, etc. CONCLUSION CDK4/6 inhibitors could lead to pulmonary toxicity, myelosuppression, skin reactions, etc. Special attention should be paid to abemaciclib for interstitial lung disease (ILD), erythema multiforme, and thrombosis risk; ribociclib for cardiac toxicity, hepatotoxicity, and musculoskeletal toxicity; palbociclib for neurocognitive impairment and osteonecrosis of the jaw.
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Affiliation(s)
- Yuan Peng
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
- School of Pharmacy, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Yuying Zhou
- The First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Xuanyi Zhou
- School of Pharmacy, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Xu Jia
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - Yan Zhong
- Department of Pharmacy, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region (Hospital. C. T), Chengdu, Sichuan, China
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3
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Favaretto G, Rossi MN, Cuollo L, Laffranchi M, Cervelli M, Soriani A, Sozzani S, Santoni A, Antonangeli F. Neutrophil-activating secretome characterizes palbociclib-induced senescence of breast cancer cells. Cancer Immunol Immunother 2024; 73:113. [PMID: 38693312 PMCID: PMC11063017 DOI: 10.1007/s00262-024-03695-5] [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: 11/27/2023] [Accepted: 03/30/2024] [Indexed: 05/03/2024]
Abstract
Senescent cells have a profound impact on the surrounding microenvironment through the secretion of numerous bioactive molecules and inflammatory factors. The induction of therapy-induced senescence by anticancer drugs is known, but how senescent tumor cells influence the tumor immune landscape, particularly neutrophil activity, is still unclear. In this study, we investigate the induction of cellular senescence in breast cancer cells and the subsequent immunomodulatory effects on neutrophils using the CDK4/6 inhibitor palbociclib, which is approved for the treatment of breast cancer and is under intense investigation for additional malignancies. Our research demonstrates that palbociclib induces a reversible form of senescence endowed with an inflammatory secretome capable of recruiting and activating neutrophils, in part through the action of interleukin-8 and acute-phase serum amyloid A1. The activation of neutrophils is accompanied by the release of neutrophil extracellular trap and the phagocytic removal of senescent tumor cells. These findings may be relevant for the success of cancer therapy as neutrophils, and neutrophil-driven inflammation can differently affect tumor progression. Our results reveal that neutrophils, as already demonstrated for macrophages and natural killer cells, can be recruited and engaged by senescent tumor cells to participate in their clearance. Understanding the interplay between senescent cells and neutrophils may lead to innovative strategies to cope with chronic or tumor-associated inflammation.
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Affiliation(s)
- Gabriele Favaretto
- Institute of Molecular Biology and Pathology (IBPM), National Research Council (CNR), c/o Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 291, 00161, Rome, Italy
| | | | - Lorenzo Cuollo
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
- Department of Pediatrics, Columbia University, New York, NY, USA
| | - Mattia Laffranchi
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | | | - Alessandra Soriani
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Silvano Sozzani
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
- IRCCS Neuromed, Pozzilli, Italy
| | - Angela Santoni
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
- IRCCS Neuromed, Pozzilli, Italy
| | - Fabrizio Antonangeli
- Institute of Molecular Biology and Pathology (IBPM), National Research Council (CNR), c/o Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 291, 00161, Rome, Italy.
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4
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Yoshinami T. Perspectives for the clinical application of ctDNA analysis to breast cancer drug therapy. Breast Cancer 2024:10.1007/s12282-024-01571-9. [PMID: 38649655 DOI: 10.1007/s12282-024-01571-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 03/14/2024] [Indexed: 04/25/2024]
Abstract
Circulating tumor DNA (ctDNA) consists of DNA fragments released from cancer cells into the blood circulation with quick clearance. Analysis of ctDNA can enable real-time assessment of the presence of cancer cells and their genomic characteristics. Therefore, ctDNA is expected to be one of the most useful biomarkers for cancer. In recent years, several ultra-sensitive assays for ctDNA analysis have been developed, and many clinical trials are using these assays to investigate the efficacy of ctDNA-based therapeutic strategies. In the perioperative phase, real-time identification of minimal residual disease at the molecular level with ctDNA analysis can help evaluate the risk of recurrence to inform escalation or de-escalation of perioperative drug therapy. Many trials have examined whether therapeutic strategies using ctDNA analysis to predict treatment efficacy or resistance to molecular targeted agents can improve prognosis in metastatic breast cancer. In this review, we discuss the most recent ctDNA assays, the significance of introducing ctDNA assays to clinical practice, and the research on their application in perioperative and metastatic phases.
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Affiliation(s)
- Tetsuhiro Yoshinami
- Department of Breast and Endocrine Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan.
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5
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Micha JP, Rettenmaier MA, Bohart RD, Goldstein BH. Cyclin-dependent kinase 4/6 inhibitors in the treatment of advanced or metastatic breast cancer. J Oncol Pharm Pract 2024; 30:547-551. [PMID: 38404005 DOI: 10.1177/10781552241232701] [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] [Indexed: 02/27/2024]
Abstract
OBJECTIVE Despite the relatively high cure rates in early-stage breast cancer, advanced and metastatic breast cancer cases are associated with more inauspicious patient outcomes. Fortunately, with the advent of cyclin-dependent kinase (CDK)4/6 inhibitors (e.g. palbociclib, ribociclib, and abemaciclib) with endocrine therapy, survival in advanced and metastatic breast cancer has appreciably improved. In the current review, we discuss these distinctions and the concomitant implications associated with the individual CDK4/6 inhibitors. DATA SOURCES We conducted an extensive PubMed search comprising several review articles on the topic of advanced or metastatic breast cancer treatment, with specific terms that included CDK4/6 inhibitors, treatment, and breast cancer. DATA SUMMARY Palbociclib, ribociclib, and abemaciclib have exhibited superior progression-free survival differences compared to endocrine therapy alone. However, there are differences among the various CDK4/6 inhibitors with regard to overall survival, tolerability and quality of life. CONCLUSIONS Ribociclib may be indicated for pre/perimenopausal patients, whereas abemaciclib is potentially recommended to address endocrine-resistant or visceral disease. Alternatively, palbociclib is associated with lower discontinuation rates than abemaciclib and unlike ribociclib, QTc prolongation is not observed with palbociclib.
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Affiliation(s)
- John P Micha
- Women's Cancer Research Foundation, Newport Beach, CA, USA
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6
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Bai Y, Zhou L, Zhang C, Guo M, Xia L, Tang Z, Liu Y, Deng S. Dual network analysis of transcriptome data for discovery of new therapeutic targets in non-small cell lung cancer. Oncogene 2023; 42:3605-3618. [PMID: 37864031 PMCID: PMC10691970 DOI: 10.1038/s41388-023-02866-5] [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: 06/01/2023] [Revised: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 10/22/2023]
Abstract
The drug therapy for non-small cell lung cancer (NSCLC) have always been issues of poisonous side effect, acquired drug resistance and narrow applicable population. In this study, we built a novel network analysis method (difference- correlation- enrichment- causality- node), which was based on the difference analysis, Spearman correlation network analysis, biological function analysis and Bayesian causality network analysis to discover new therapeutic target of NSCLC in the sequencing data of BEAS-2B and 7 NSCLC cell lines. Our results showed that, as a proteasome subunit coding gene in the central of cell cycle network, PSMD2 was associated with prognosis and was an independent prognostic factor for NSCLC patients. Knockout of PSMD2 inhibited the proliferation of NSCLC cells by inducing cell cycle arrest, and exhibited marked increase of cell cycle blocking protein p21, p27 and decrease of cell cycle driven protein CDK4, CDK6, CCND1 and CCNE1. IPA and molecular docking suggested bortezomib has stronger affinity to PSMD2 compared with reported targets PSMB1 and PSMB5. In vitro and In vivo experiments demonstrated the inhibitory effect of bortezomib in NSCLC with different driven mutations or with tyrosine kinase inhibitors resistance. Taken together, bortezomib could target PSMD2, PSMB1 and PSMB5 to inhibit the proteasome degradation of cell cycle check points, to block cell proliferation of NSCLC, which was potential optional drug for NSCLC patients.
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Affiliation(s)
- Yuquan Bai
- Institute of Thoracic Oncology and Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Lu Zhou
- Institute of Thoracic Oncology and Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Chuanfen Zhang
- Institute of Thoracic Oncology and Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Minzhang Guo
- Institute of Thoracic Oncology and Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Liang Xia
- Institute of Thoracic Oncology and Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhenying Tang
- College of Computer Science, Sichuan University, Chengdu, 610041, China
| | - Yi Liu
- Institute of Thoracic Oncology and Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Senyi Deng
- Institute of Thoracic Oncology and Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China.
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7
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Prevost R, Chretien B, Minoc EM, Dolladille C, Da-Silva A, Nehme A, Joly F, Lelong-Boulouard V, Bastien E. Neurocognitive impairment in females with breast cancer treated with endocrine therapy and CDK4/6 inhibitors: a pharmacovigilance study using the World Health Organization's database. Front Pharmacol 2023; 14:1278682. [PMID: 37927591 PMCID: PMC10622981 DOI: 10.3389/fphar.2023.1278682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/04/2023] [Indexed: 11/07/2023] Open
Abstract
Importance: Endocrine therapies (ETs) and inhibitors of cyclin-dependent kinases-4/6 (iCDK4/6s) are a standard treatment in breast cancer. However, data on potential neurocognitive impacts remain inconsistent for ET and are scarce for iCDK4/6s. Objective: To evaluate whether ET and iCDK4/6s are associated with neurocognitive impairment (NCI). Methods: We used observational, real-world cases of NCI from the World Health Organization's database VigiBase® to perform disproportionality analysis. Cases were defined as any symptom of NCI in females treated with ETs or iCDK4/6s. The study period was from the date of the first adverse event reported in VigiBase® with iCDK4/6s (1 January 2014) until the date of data extraction (16 March 2022). In our primary analysis, we calculated the reporting odds ratio (ROR) adjusted for age to identify a potential association between NCI and individual ETs in isolation or in combination with iCDK4/6s. We also performed subgroup analyses by the NCI class. Results: We identified 2.582 and 1.943 reports of NCI associated with ETs and iCDK4/6s, respectively. NCI was significantly associated with each ET [anastrozole: n = 405, aROR = 1.52 (95% CI: 1.37-1.67); letrozole: n = 741, aROR = 1.37 (95% CI: 1.27-1.47); exemestane: n = 316, aROR = 1.37 (95% CI: 1.22-1.53); tamoxifen: n = 311, aROR = 1.25 (95% CI: 1.12-1.40); and fulvestrant: n = 319, aROR = 1.19 (95% CI: 1.06-1.33)] and only with palbociclib for iCDK4/6s [n = 1,542, aROR = 1.41 (95% CI: 1.34-1.48)]. Conclusion: These findings suggest that in females treated for breast cancer, all ETs may be associated with NCI. However, amongst iCDK4/6s, NCI may be specific to palbociclib. NCI most frequently involved learning and memory as well as language. Neurocognitive impact of treatments requires better consideration and management.
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Affiliation(s)
- Rachel Prevost
- Department of Pharmacology, University Teaching Hospital of Caen-Normandie, Caen, France
| | - Basile Chretien
- Department of Pharmacology, University Teaching Hospital of Caen-Normandie, Caen, France
| | - Elise-Marie Minoc
- Department of Pharmacology, University Teaching Hospital of Caen-Normandie, Caen, France
- Normandie University, UNICAEN, INSERM COMETE, U1075, Caen, France
| | - Charles Dolladille
- Department of Pharmacology, University Teaching Hospital of Caen-Normandie, Caen, France
- Normandie University, UNICAEN, INSERM U1086 “Interdisciplinary Research Unit for Cancers Prevention and Treatment” (ANTICIPE), Caen, France
| | - Angélique Da-Silva
- Department of Pharmacology, University Teaching Hospital of Caen-Normandie, Caen, France
| | - Ahmad Nehme
- Department of Neurology, University Teaching Hospital of Caen-Normandie, Caen, France
| | - Florence Joly
- Normandie University, UNICAEN, INSERM U1086 “Interdisciplinary Research Unit for Cancers Prevention and Treatment” (ANTICIPE), Caen, France
- Comprehensive Cancer Center Baclesse, Unicancer, Caen, France
| | - Véronique Lelong-Boulouard
- Department of Pharmacology, University Teaching Hospital of Caen-Normandie, Caen, France
- Normandie University, UNICAEN, INSERM COMETE, U1075, Caen, France
| | - Etienne Bastien
- Department of Pharmacology, University Teaching Hospital of Caen-Normandie, Caen, France
- Comprehensive Cancer Center Baclesse, Unicancer, Caen, France
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8
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Neel NC, Sicklick JK, Zare S, Boles SG. Near-Complete Pathological Response to Abemaciclib in the Treatment of Well-Differentiated/Dedifferentiated Liposarcoma: A Case Report. JCO Precis Oncol 2023; 7:e2100482. [PMID: 37343202 DOI: 10.1200/po.21.00482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 09/26/2022] [Accepted: 03/20/2023] [Indexed: 06/23/2023] Open
Affiliation(s)
- Nicholas C Neel
- University of California, San Diego School of Medicine, San Diego, CA
| | - Jason K Sicklick
- University of California, San Diego School of Medicine, San Diego, CA
- UC San Diego Moores Cancer Center, La Jolla, CA
- Department of Surgery, Division of Surgical Oncology, UC San Diego Health, San Diego, CA
| | - Somaye Zare
- University of California, San Diego School of Medicine, San Diego, CA
- Department of Pathology, UC San Diego Health, San Diego, CA
| | - Sarah G Boles
- University of California, San Diego School of Medicine, San Diego, CA
- UC San Diego Moores Cancer Center, La Jolla, CA
- Department of Medicine, Division of Medical Oncology, UC San Diego Health, San Diego, CA
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9
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Cejuela M, Gil-Torralvo A, Castilla MÁ, Domínguez-Cejudo MÁ, Falcón A, Benavent M, Molina-Pinelo S, Ruiz-Borrego M, Salvador Bofill J. Abemaciclib, Palbociclib, and Ribociclib in Real-World Data: A Direct Comparison of First-Line Treatment for Endocrine-Receptor-Positive Metastatic Breast Cancer. Int J Mol Sci 2023; 24:ijms24108488. [PMID: 37239834 DOI: 10.3390/ijms24108488] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/02/2023] [Accepted: 05/06/2023] [Indexed: 05/28/2023] Open
Abstract
By the end of 2020, there were more than 8 million women alive who had received a breast cancer diagnosis in the previous 5 years, making it the most prevalent neoplasia in the world. About 70% of breast-cancer cases present positivity for estrogen and/or progesterone receptors and a lack of HER-2 overexpression. Endocrine therapy has traditionally been the standard of care for ER-positive and HER-2-negative metastatic breast cancer. In the last 8 years, the advent of CDK4/6 inhibitors has shown that adding them to endocrine therapy doubles PFS. As a result, this combination has become the gold standard in this setting. Three CDK4/6 inhibitors have been approved by the EMA and the FDA: abemaciclib, palbociclib, and ribociclib. They all have the same indications, and it is at each physician's discretion to choose one or the other. The aim of our study was to perform a comparative efficacy analysis of the three CDK4/6i using real-world data. We selected patients diagnosed with endocrine-receptor-positive and HER2-negative breast cancer who were treated with all three CDK4/6i as first-line therapy at a reference center. After 42 months of retrospective follow up, abemaciclib was associated with a significant benefit in terms of progression-free survival in endocrine-resistant patients and in the population without visceral involvement. In our real-world cohort, we found no other statistically significant differences among the three CDK4/6 inhibitors.
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Affiliation(s)
- Mónica Cejuela
- Medical Oncology Department, Virgen del Rocio Hospital, 41013 Seville, Spain
| | - Ana Gil-Torralvo
- Medical Oncology Department, Virgen del Rocio Hospital, 41013 Seville, Spain
- Institute of Biomedicine of Seville (IBiS), HUVR, CSIC, Universidad de Sevilla, 41013 Seville, Spain
- Andalusia-Roche Network Mixed Alliance in Precision Medical Oncology, 41092 Sevilla, Spain
| | - M Ángeles Castilla
- Institute of Biomedicine of Seville (IBiS), HUVR, CSIC, Universidad de Sevilla, 41013 Seville, Spain
- Andalusia-Roche Network Mixed Alliance in Precision Medical Oncology, 41092 Sevilla, Spain
| | - M Ángeles Domínguez-Cejudo
- Institute of Biomedicine of Seville (IBiS), HUVR, CSIC, Universidad de Sevilla, 41013 Seville, Spain
- Andalusia-Roche Network Mixed Alliance in Precision Medical Oncology, 41092 Sevilla, Spain
| | - Alejandro Falcón
- Medical Oncology Department, Virgen del Rocio Hospital, 41013 Seville, Spain
| | - Marta Benavent
- Medical Oncology Department, Virgen del Rocio Hospital, 41013 Seville, Spain
- Institute of Biomedicine of Seville (IBiS), HUVR, CSIC, Universidad de Sevilla, 41013 Seville, Spain
- Andalusia-Roche Network Mixed Alliance in Precision Medical Oncology, 41092 Sevilla, Spain
| | - Sonia Molina-Pinelo
- Institute of Biomedicine of Seville (IBiS), HUVR, CSIC, Universidad de Sevilla, 41013 Seville, Spain
- Andalusia-Roche Network Mixed Alliance in Precision Medical Oncology, 41092 Sevilla, Spain
| | - Manuel Ruiz-Borrego
- Medical Oncology Department, Virgen del Rocio Hospital, 41013 Seville, Spain
| | - Javier Salvador Bofill
- Medical Oncology Department, Virgen del Rocio Hospital, 41013 Seville, Spain
- Institute of Biomedicine of Seville (IBiS), HUVR, CSIC, Universidad de Sevilla, 41013 Seville, Spain
- Andalusia-Roche Network Mixed Alliance in Precision Medical Oncology, 41092 Sevilla, Spain
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10
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Fang L, Chu M, Yan C, Liu Y, Zhao Z. Palbociclib and Michael-acceptor hybrid compounds as CDK4/6 covalent inhibitors: improved potency, broad anticancer spectrum and overcoming drug resistance. Bioorg Med Chem 2023; 84:117263. [PMID: 37011445 DOI: 10.1016/j.bmc.2023.117263] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/15/2023] [Accepted: 03/24/2023] [Indexed: 03/28/2023]
Abstract
To search for potent CDK4/6 covalent inhibitors, total 14 compounds have been designed and synthesized by connecting different Michael-acceptor to the piperazine moiety of palbociclib. All the compounds displayed good antiproliferative activity against human hepatoma cell (HepG2), non-small cell lung cancer (A549), and breast cancer (MDA-MB-231 and MCF-7) cell lines. In particular, compound A4 showed the highest inhibitory activity to MDA-MB-231 and MCF-7 cells with IC50 values of 0.51 μM and 0.48 μM, respectively. More importantly, A4 also showed strong inhibition against MDA-MB-231/palbociclib cells, indicating that A4 could effectively avoid the resistance of palbociclib. In the enzyme test, A4 showed selective inhibitory activity against CDK4/6, with the IC50 value of 18 nM and 13 nM, respectively. It was also found that A4 could efficiently induce apoptosis and arrest the cell cycle at G0/G1 phase. Moreover, A4 could significantly decrease the phosphorylation level of CDK4 and CDK6. HPLC and molecular modeling studies suggested that A4 could form a covalent bond with the target protein.
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Affiliation(s)
- Lei Fang
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Mengqi Chu
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Changhang Yan
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yilin Liu
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Zimeng Zhao
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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11
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Tomanová M, Kozlanská K, Jorda R, Jedinák L, Havlíková T, Řezníčková E, Peřina M, Klener P, Dolníková A, Cankař P, Kryštof V. Synthesis and Structural Optimization of 2,7,9-Trisubstituted purin-8-ones as FLT3-ITD Inhibitors. Int J Mol Sci 2022; 23:ijms232416169. [PMID: 36555810 PMCID: PMC9782245 DOI: 10.3390/ijms232416169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Therapy of FLT3-positive acute myeloid leukemia still remains complicated, despite the availability of newly approved kinase inhibitors. Various strategies to avoid the reduced efficacy of therapy have been explored, including the development of dual targeting compounds, which inhibit FLT3 and another kinase necessary for the survival and proliferation of AML cells. We have designed new 2,7,9-trisubstituted 8-oxopurines as FLT3 inhibitors and report here the structure-activity relationship studies. We demonstrated that substituents at positions 7 and 9 modulate activity between CDK4 and FLT3 kinase, and the isopropyl group at position 7 substantially increased the selectivity toward FLT3 kinase, which led to the discovery of compound 15a (9-cyclopentyl-7-isopropyl-2-((4-(piperazin-1-yl)phenyl)amino)-7,9-dihydro-8H-purin-8-one). Cellular analyses in MV4-11 cells revealed inhibition of autophosphorylation of FLT3 kinase in nanomolar doses, including the suppression of downstream STAT5 and ERK1/2 phosphorylation. We also describe mechanistic studies in cell lines and activity in a mouse xenograft model in vivo.
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Affiliation(s)
- Monika Tomanová
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 1192/12, 77900 Olomouc, Czech Republic
| | - Karolína Kozlanská
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Radek Jorda
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Lukáš Jedinák
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 1192/12, 77900 Olomouc, Czech Republic
| | - Tereza Havlíková
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 1192/12, 77900 Olomouc, Czech Republic
| | - Eva Řezníčková
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Miroslav Peřina
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Pavel Klener
- First Faculty of Medicine, Institute of Pathological Physiology, Charles University, 12108 Prague, Czech Republic
- First Department of Internal Medicine-Hematology, General University Hospital and First Faculty of Medicine, Charles University, 12808 Prague, Czech Republic
| | - Alexandra Dolníková
- First Faculty of Medicine, Institute of Pathological Physiology, Charles University, 12108 Prague, Czech Republic
| | - Petr Cankař
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 1192/12, 77900 Olomouc, Czech Republic
- Correspondence: (P.C.); (V.K.)
| | - Vladimír Kryštof
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 5, 77900 Olomouc, Czech Republic
- Correspondence: (P.C.); (V.K.)
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12
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Jorda R, Havlíček L, Peřina M, Vojáčková V, Pospíšil T, Djukic S, Škerlová J, Grúz J, Renešová N, Klener P, Řezáčová P, Strnad M, Kryštof V. 3,5,7-Substituted Pyrazolo[4,3- d]Pyrimidine Inhibitors of Cyclin-Dependent Kinases and Cyclin K Degraders. J Med Chem 2022; 65:8881-8896. [PMID: 35749742 DOI: 10.1021/acs.jmedchem.1c02184] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
3,5,7-Trisubstituted pyrazolo[4,3-d]pyrimidines have been identified as potent inhibitors of cyclin-dependent kinases (CDKs), which are established drug targets. Herein, we describe their further structural modifications leading to novel nanomolar inhibitors with strong antiproliferative activity. We determined the crystal structure of fully active CDK2/A2 with 5-(2-amino-1-ethyl)thio-3-cyclobutyl-7-[4-(pyrazol-1-yl)benzyl]amino-1(2)H-pyrazolo[4,3-d]pyrimidine (24) at 1.7 Å resolution, confirming the competitive mode of inhibition. Biochemical and cellular assays in lymphoma cell lines confirmed the expected mechanism of action through dephosphorylation of retinoblastoma protein and RNA polymerase II, leading to induction of apoptosis. Importantly, we also revealed an interesting ability of compound 24 to induce proteasome-dependent degradation of cyclin K both in vitro and in a patient-derived xenograft in vivo. We propose that 24 has a dual mechanism of action, acting as a kinase inhibitor and as a molecular glue inducing an interaction between CDK12 and DDB1 that leads to polyubiquitination of cyclin K and its subsequent degradation.
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Affiliation(s)
- Radek Jorda
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Libor Havlíček
- Isotope Laboratory, Institute of Experimental Botany, Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Miroslav Peřina
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Veronika Vojáčková
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Tomáš Pospíšil
- Department of Chemical Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Stefan Djukic
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 16610 Prague, Czech Republic
| | - Jana Škerlová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 16610 Prague, Czech Republic.,Institute of Molecular Genetics, Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Jiří Grúz
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Nicol Renešová
- First Faculty of Medicine, Institute of Pathological Physiology, Charles University, 12108 Prague, Czech Republic
| | - Pavel Klener
- First Faculty of Medicine, Institute of Pathological Physiology, Charles University, 12108 Prague, Czech Republic.,First Department of Internal Medicine-Hematology, General University Hospital and First Faculty of Medicine, Charles University, 12808 Prague, Czech Republic
| | - Pavlína Řezáčová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 16610 Prague, Czech Republic.,Institute of Molecular Genetics, Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Palacký University and Institute of Experimental Botany, Czech Academy of Sciences, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Vladimír Kryštof
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic.,Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 5, 77900 Olomouc, Czech Republic
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13
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Huang W, Hao Z, Mao F, Guo D. Small Molecule Inhibitors in Adult High-Grade Glioma: From the Past to the Future. Front Oncol 2022; 12:911876. [PMID: 35785151 PMCID: PMC9247310 DOI: 10.3389/fonc.2022.911876] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 05/13/2022] [Indexed: 12/12/2022] Open
Abstract
Glioblastoma is the most common primary malignant tumor in the brain and has a dismal prognosis despite patients accepting standard therapies. Alternation of genes and deregulation of proteins, such as receptor tyrosine kinase, PI3K/Akt, PKC, Ras/Raf/MEK, histone deacetylases, poly (ADP-ribose) polymerase (PARP), CDK4/6, branched-chain amino acid transaminase 1 (BCAT1), and Isocitrate dehydrogenase (IDH), play pivotal roles in the pathogenesis and progression of glioma. Simultaneously, the abnormalities change the cellular biological behavior and microenvironment of tumor cells. The differences between tumor cells and normal tissue become the vulnerability of tumor, which can be taken advantage of using targeted therapies. Small molecule inhibitors, as an important part of modern treatment for cancers, have shown significant efficacy in hematologic cancers and some solid tumors. To date, in glioblastoma, there have been more than 200 clinical trials completed or ongoing in which trial designers used small molecules as monotherapy or combination regimens to correct the abnormalities. In this review, we summarize the dysfunctional molecular mechanisms and highlight the outcomes of relevant clinical trials associated with small-molecule targeted therapies. Based on the outcomes, the main findings were that small-molecule inhibitors did not bring more benefit to newly diagnosed glioblastoma, but the clinical studies involving progressive glioblastoma usually claimed “noninferiority” compared with historical results. However, as to the clinical inferiority trial, similar dosing regimens should be avoided in future clinical trials.
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Affiliation(s)
- Wenda Huang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhaonian Hao
- Department of Neurosurgery, Beijing TianTan Hospital, Capital Medical University, Beijing, China
| | - Feng Mao
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Dongsheng Guo, ; Feng Mao,
| | - Dongsheng Guo
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Dongsheng Guo, ; Feng Mao,
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14
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Yuan K, Kuang W, Chen W, Ji M, Min W, Zhu Y, Hou Y, Wang X, Li J, Wang L, Yang P. Discovery of novel and orally bioavailable CDK 4/6 inhibitors with high kinome selectivity, low toxicity and long-acting stability for the treatment of multiple myeloma. Eur J Med Chem 2022; 228:114024. [PMID: 34875521 DOI: 10.1016/j.ejmech.2021.114024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 11/03/2022]
Abstract
Multiple myeloma (MM) ranks second in malignant hematopoietic cancers, and the most common anti-MM drugs easily generate resistance. CDK4/6 have been validated to play determinant roles in MM, but no remarkable progress has been obtained from clinical trials of CDK4/6 inhibitors for MM. To discover novel CDK6 inhibitors with better potency and high druggability, structure-based virtual screening was conducted to identify compound 10. Further chemical optimization afforded a better derivative, compound 32, which exhibited strong inhibition of CDK4/6 and showed high selectivity over 360+ kinases, including homologous CDKs. The in vivo evaluation demonstrated that compound 32 possessed low toxicity (LD50 > 10,000 mg/kg), favorable bioavailability (F% = 51%), high metabolic stability (t1/2 > 24 h) and strong anti-MM potency. In summary, we discovered a novel CDK4/6 inhibitor bearing favorable drug-like properties and offered a great candidate for MM preclinical studies.
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Affiliation(s)
- Kai Yuan
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Wenbin Kuang
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Weijiao Chen
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Minghui Ji
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Wenjian Min
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Yasheng Zhu
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Yi Hou
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Xiao Wang
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Jiaxing Li
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Liping Wang
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Peng Yang
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
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15
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Adamantane-Substituted Purines and Their β-Cyclodextrin Complexes: Synthesis and Biological Activity. Int J Mol Sci 2021; 22:ijms222312675. [PMID: 34884480 PMCID: PMC8657435 DOI: 10.3390/ijms222312675] [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: 10/31/2021] [Revised: 11/18/2021] [Accepted: 11/22/2021] [Indexed: 12/05/2022] Open
Abstract
Cyclin-dependent kinases (CDKs) play an important role in the cell-division cycle. Synthetic inhibitors of CDKs are based on 2,6,9-trisubstituted purines and are developed as potential anticancer drugs; however, they have low solubility in water. In this study, we proved that the pharmaco-chemical properties of purine-based inhibitors can be improved by appropriate substitution with the adamantane moiety. We prepared ten new purine derivatives with adamantane skeletons that were linked at position 6 using phenylene spacers of variable geometry and polarity. We demonstrated that the adamantane skeleton does not compromise the biological activity, and some of the new purines displayed even higher inhibition activity towards CDK2/cyclin E than the parental compounds. These findings were supported by a docking study, which showed an adamantane scaffold inside the binding pocket participating in the complex stabilisation with non-polar interactions. In addition, we demonstrated that β-cyclodextrin (CD) increases the drug’s solubility in water, although this is at the cost of reducing the biochemical and cellular effect. Most likely, the drug concentration, which is necessary for target engagement, was decreased by competitive drug binding within the complex with β-CD.
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16
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Dhokne P, Sakla AP, Shankaraiah N. Structural insights of oxindole based kinase inhibitors as anticancer agents: Recent advances. Eur J Med Chem 2021; 216:113334. [PMID: 33721669 DOI: 10.1016/j.ejmech.2021.113334] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/09/2021] [Accepted: 02/19/2021] [Indexed: 12/12/2022]
Abstract
Small-molecule kinase inhibitors are being continuously explored as new anticancer therapeutics. Kinases are the phosphorylating enzymes which regulate numerous cellular functions such as proliferation, differentiation, migration, metabolism, and angiogenesis by activating several signalling pathways. Kinases have also been frequently found to be deregulated and overexpressed in cancerous tissues. Therefore, modulating the kinase activity by employing small molecules has emerged as a strategic approach for cancer treatment. On the other hand, oxindole motifs have surfaced as privileged scaffolds with significant multi-kinase inhibitory activity. The present review summarises recent advances in the development of oxindole based kinase inhibitors. The role of distinguished structural frameworks of oxindoles, such as 3-alkenyl oxindoles, spirooxindoles, 3-iminooxindoles and similar hydrazone derivatives have been described based on their kinase inhibition potential. Furthermore, the design strategies, mechanism of actions, structure activity relationships (SARs) and their mode of interaction with target protein have been critically highlighted.
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Affiliation(s)
- Prajwal Dhokne
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500037, India
| | - Akash P Sakla
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500037, India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500037, India.
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17
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Jansa J, Jorda R, Škerlová J, Pachl P, Peřina M, Řezníčková E, Heger T, Gucký T, Řezáčová P, Lyčka A, Kryštof V. Imidazo[1,2-c]pyrimidin-5(6H)-one inhibitors of CDK2: Synthesis, kinase inhibition and co-crystal structure. Eur J Med Chem 2021; 216:113309. [PMID: 33711765 DOI: 10.1016/j.ejmech.2021.113309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/12/2021] [Accepted: 02/13/2021] [Indexed: 11/15/2022]
Abstract
Pharmacological inhibition of cyclin-dependent kinases has emerged as a possible treatment option for various cancer types. We recently identified substituted imidazo[1,2-c]pyrimidin-5(6H)-ones as inhibitors of cyclin-dependent kinase 2 (CDK2). Here, we report the synthesis of derivatives modified at positions 2, 3, 6 or 8 prepared using Suzuki-Miyaura cross-coupling, halogenation, Dimroth-type rearrangement and alkylation as the main synthetic methods. The compounds displayed micro- to submicromolar inhibition of CDK2/cyclin E activity. Binding of the most potent compound 3b to CDK2 was determined using isothermal titration calorimetry. The co-crystal structure of 3b in complex with fully active CDK2 was solved, revealing the binding mode of 3b in the ATP pocket and a hydrogen bonding interaction with hinge region residue Leu83. Evaluation against leukaemia cell lines revealed low cytotoxicity, which is in line with the high selectivity towards CDK2. This study demonstrates that substituted imidazo[1,2-c]pyrimidines can be exploited for future kinase inhibitor development.
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Affiliation(s)
- Josef Jansa
- Research Institute for Organic Syntheses (VUOS), Rybitví 296, 53354, Pardubice-Rybitví, Czech Republic
| | - Radek Jorda
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Jana Škerlová
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Flemingovo nám. 2, 16610, Prague 6, Czech Republic
| | - Petr Pachl
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Flemingovo nám. 2, 16610, Prague 6, Czech Republic
| | - Miroslav Peřina
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Eva Řezníčková
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Tomáš Heger
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Tomáš Gucký
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Pavlína Řezáčová
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Flemingovo nám. 2, 16610, Prague 6, Czech Republic; Institute of Molecular Genetics, The Czech Academy of Sciences, Vídeňská 1083, 14220, Prague, Czech Republic
| | - Antonín Lyčka
- Research Institute for Organic Syntheses (VUOS), Rybitví 296, 53354, Pardubice-Rybitví, Czech Republic; Faculty of Science, University of Hradec, Rokitanského 62, 50003, Hradec Králové, Czech Republic
| | - Vladimír Kryštof
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic.
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