1
|
Schwarztrauber M, Edwards N, Hiryak J, Chandrasekaran R, Wild J, Bommareddy A. Antitumor and chemopreventive role of major phytochemicals against breast cancer development. Nat Prod Res 2023:1-21. [PMID: 37646820 DOI: 10.1080/14786419.2023.2251167] [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: 02/01/2023] [Revised: 07/20/2023] [Accepted: 08/17/2023] [Indexed: 09/01/2023]
Abstract
Breast cancer continues to be one of the most commonly diagnosed cancers around the world. Despite the decrease in mortality, there has been a steady increase in its incidence. There is much evidence that naturally occurring phytochemicals could prove to be safer alternatives aimed at prevention and development of breast cancer. In the present review, we discuss important phytochemicals, namely capsaicin, alpha-santalol and diallyl trisulphide that are shown to have chemopreventive and anti-tumour properties against breast cancer development. We examined current knowledge of their bioavailability, safety and modulation of molecular mechanisms including their ability to induce apoptotic cell death, promote cell cycle arrest, and inhibit cellular proliferation in different breast cancer cell lines and in vivo models. This review emphasises the importance of these naturally occurring phytochemicals and their potential of becoming therapeutic options in the arsenal against breast cancer development provided further scientific and clinical validation.
Collapse
Affiliation(s)
| | - Nathaniel Edwards
- Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, PA, USA
| | - James Hiryak
- Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, PA, USA
| | - Ritesh Chandrasekaran
- Department of Biomedical Science, Charles E Schmidt College of Medicine, FL Atlantic University, Boca Raton, FL, USA
| | - Jayson Wild
- Department of Biomedical Science, Charles E Schmidt College of Medicine, FL Atlantic University, Boca Raton, FL, USA
| | - Ajay Bommareddy
- Department of Biomedical Science, Charles E Schmidt College of Medicine, FL Atlantic University, Boca Raton, FL, USA
| |
Collapse
|
2
|
Tripathi R, Anifowose A, Lu W, Yang X, Wang B. Upregulation of p53 through induction of MDM2 degradation: improved potency through the introduction of an alkylketone sidechain on the anthraquinone core. J Enzyme Inhib Med Chem 2022; 37:2370-2381. [PMID: 36043494 PMCID: PMC9448394 DOI: 10.1080/14756366.2022.2116699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Overexpression of ubiquitin ligase MDM2 causes depletion of the p53 tumour-suppressor and thus leads to cancer progression. In recent years, anthraquinone analogs have received significant attention due to their ability to downregulate MDM2, thereby promoting p53-induced apoptosis. Previously, we have developed potent anthraquinone compounds having the ability to upregulate p53 via inhibition of MDM2 in both cell culture and animal models of acute lymphocytic leukaemia. Earlier work was focussed on mechanistic work, pharmacological validation of this class of compounds in animal models, and mapping out structural space that allows for further modification and optimisation. Herein, we describe our work in optimising the substituents on the two phenol hydroxyl groups. It was found that the introduction of an alkylketone moiety led to a potent series of analogs with BW-AQ-350 being the most potent compound yet (IC50 = 0.19 ± 0.01 µM) which exerts cytotoxicity by inducing MDM2 degradation and p53 upregulation.
Collapse
Affiliation(s)
- Ravi Tripathi
- Department of Chemistry, Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA, USA
| | - Abiodun Anifowose
- Department of Chemistry, Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA, USA
| | - Wen Lu
- Department of Chemistry, Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA, USA
| | - Xiaoxiao Yang
- Department of Chemistry, Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA, USA
| | - Binghe Wang
- Department of Chemistry, Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA, USA
| |
Collapse
|
3
|
A Quantitative Systems Approach to Define Novel Effects of Tumour p53 Mutations on Binding Oncoprotein MDM2. Int J Mol Sci 2021; 23:ijms23010053. [PMID: 35008477 PMCID: PMC8744954 DOI: 10.3390/ijms23010053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/13/2021] [Accepted: 12/16/2021] [Indexed: 11/30/2022] Open
Abstract
Understanding transient protein interactions biochemically at the proteome scale remains a long-standing challenge. Current tools developed to study protein interactions in high-throughput measure stable protein complexes and provide binary readouts; they do not elucidate dynamic and weak protein interactions in a proteome. The majority of protein interactions are transient and cover a wide range of affinities. Nucleic acid programmable protein arrays (NAPPA) are self-assembling protein microarrays produced by freshly translating full-length proteins in situ on the array surface. Herein, we have coupled NAPPA to surface plasmon resonance imaging (SPRi) to produce a novel label-free platform that measures many protein interactions in real-time allowing the determination of the KDs and rate constants. The developed novel NAPPA-SPRi technique showed excellent ability to study protein-protein interactions of clinical mutants of p53 with its regulator MDM2. Furthermore, this method was employed to identify mutant p53 proteins insensitive to the drug nutlin-3, currently in clinical practice, which usually disrupts the p53-MDM2 interactions. Thus, significant differences in the interactions were observed for p53 mutants on the DNA binding domain (Arg-273-Cys, Arg-273-His, Arg-248-Glu, Arg-280-Lys), on the structural domain (His-179-Tyr, Cys-176-Phe), on hydrophobic moieties in the DNA binding domain (Arg-280-Thr, Pro-151-Ser, Cys-176-Phe) and hot spot mutants (Gly-245-Cys, Arg-273-Leu, Arg-248-Glu, Arg-248-Gly), which signifies the importance of point mutations on the MDM2 interaction and nutlin3 effect, even in molecular locations related to other protein activities.
Collapse
|
4
|
Haronikova L, Bonczek O, Zatloukalova P, Kokas-Zavadil F, Kucerikova M, Coates PJ, Fahraeus R, Vojtesek B. Resistance mechanisms to inhibitors of p53-MDM2 interactions in cancer therapy: can we overcome them? Cell Mol Biol Lett 2021; 26:53. [PMID: 34911439 PMCID: PMC8903693 DOI: 10.1186/s11658-021-00293-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 11/05/2021] [Indexed: 12/13/2022] Open
Abstract
Since the discovery of the first MDM2 inhibitors, we have gained deeper insights into the cellular roles of MDM2 and p53. In this review, we focus on MDM2 inhibitors that bind to the p53-binding domain of MDM2 and aim to disrupt the binding of MDM2 to p53. We describe the basic mechanism of action of these MDM2 inhibitors, such as nutlin-3a, summarise the determinants of sensitivity to MDM2 inhibition from p53-dependent and p53-independent points of view and discuss the problems with innate and acquired resistance to MDM2 inhibition. Despite progress in MDM2 inhibitor design and ongoing clinical trials, their broad use in cancer treatment is not fulfilling expectations in heterogenous human cancers. We assess the MDM2 inhibitor types in clinical trials and provide an overview of possible sources of resistance to MDM2 inhibition, underlining the need for patient stratification based on these aspects to gain better clinical responses, including the use of combination therapies for personalised medicine.
Collapse
Affiliation(s)
- Lucia Haronikova
- RECAMO, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53, Brno, Czech Republic.
| | - Ondrej Bonczek
- RECAMO, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53, Brno, Czech Republic
- Department of Medical Biosciences, Umea University, 901 87, Umea, Vasterbotten, Sweden
| | - Pavlina Zatloukalova
- RECAMO, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Filip Kokas-Zavadil
- RECAMO, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Martina Kucerikova
- RECAMO, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53, Brno, Czech Republic
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Philip J Coates
- RECAMO, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Robin Fahraeus
- RECAMO, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53, Brno, Czech Republic
- Department of Medical Biosciences, Umea University, 901 87, Umea, Vasterbotten, Sweden
- Inserm UMRS1131, Institut de Génétique Moléculaire, Université Paris 7, Hôpital St. Louis, 75010, Paris, France
| | - Borivoj Vojtesek
- RECAMO, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53, Brno, Czech Republic.
| |
Collapse
|
5
|
Bommareddy A, McGlynn D, Lewis M, Lockus L, Seward J, Hong KL, VanWert AL, Dwivedi C. Akt/survivin pathway inhibition enhances the apoptotic cell death-induced by alpha-santalol in human prostate cancer cells. Fitoterapia 2020; 143:104552. [PMID: 32173422 DOI: 10.1016/j.fitote.2020.104552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/06/2020] [Accepted: 03/10/2020] [Indexed: 11/19/2022]
Abstract
We have shown previously that alpha-santalol, a major component of sandalwood oil inhibits growth of cultured prostate cancer cells in vitro by causing apoptosis, but the mechanism of cell death is not fully elucidated. The present study was undertaken to investigate the role of PI3K/Akt/survivin pathway in alpha-santalol-induced apoptosis employing cultured LNCaP and PC-3 human prostate cancer cells. Treatment of prostate cancer cells with alpha-santalol (20, 40 μM) resulted in the down regulation of survivin and p-AKT (s-473) expression and statistically significant reduction in total survivin levels as evidenced by survivin ELISA assay. Furthermore, inhibition of PI3K-Akt pathway by pharmacological inhibitor, LY294002 enhanced the apoptotic cell death induced by alpha-santalol as determined by cell viability, cellular morphology, active caspase-3 activity and expression of cleaved PARP, cleaved caspase-3 levels. In conclusion, the present study provides novel insight into the molecular circuitry of alpha-santalol-induced cell death and reveals that alpha-santalol targets Akt/Survivin pathway to induce cell death and that the cell death is increased in the presence of a known inhibitor of the pathway.
Collapse
Affiliation(s)
- Ajay Bommareddy
- Department of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, PA, United States of America.
| | - Danielle McGlynn
- Department of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, PA, United States of America
| | - Marissa Lewis
- Department of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, PA, United States of America
| | - Lauren Lockus
- Department of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, PA, United States of America
| | - Jonathan Seward
- Department of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, PA, United States of America
| | - Ka Lok Hong
- Department of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, PA, United States of America
| | - Adam L VanWert
- Department of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, PA, United States of America
| | - Chandradhar Dwivedi
- Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, Brookings, South Dakota, United States of America
| |
Collapse
|
6
|
Makii C, Ikeda Y, Oda K, Uehara Y, Nishijima A, Koso T, Kawata Y, Kashiyama T, Miyasaka A, Sone K, Tanikawa M, Tsuruga T, Mori-Uchino M, Nagasaka K, Matsumoto Y, Wada-Hiraike O, Kawana K, Hasegawa K, Fujiwara K, Aburatani H, Osuga Y, Fujii T. Anti-tumor activity of dual inhibition of phosphatidylinositol 3-kinase and MDM2 against clear cell ovarian carcinoma. Gynecol Oncol 2019; 155:331-339. [PMID: 31493899 DOI: 10.1016/j.ygyno.2019.08.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 08/15/2019] [Accepted: 08/23/2019] [Indexed: 12/19/2022]
Abstract
INTRODUCTION PI3K pathway signaling has received attention as a molecular target in clear cell ovarian carcinoma (CCOC). MDM2 is one of the AKT effectors in the PI3K pathway, which binds to and degrades p53. In this study, we aimed to clarify the prognostic significance of PIK3CA and MDM2 expression, and potential therapeutic effect of a dual inhibition of the PI3K pathway and MDM2. MATERIALS AND METHODS cDNA expression was evaluated by using microarray data using 75 samples of CCOC. DS-7423 (dual inhibitor of pan-PI3K and mTOR) and RG7112 (MDM2 inhibitor) were used on CCOC cell lines to evaluate cell proliferation, expression level of MDM2 related proteins, and apoptosis by MTT assay, western blotting, and flow cytometry. DS-7423 (3 mg/kg) and/or RG7112 (50 mg/kg) were orally administrated every day for three weeks, and the anti-tumor effect was evaluated using tumor xenografts, along with immunohistochemistry. RESULTS Tumors with high expression of both PIK3CA and MDM2 showed significantly worse prognosis in expression array of 71 CCOCs (P = 0.013). Dual inhibition of the PI3K pathway by DS-7423 and MDM2 by RG7112 showed synergistic anti-proliferative effect in 4 CCOC cell lines without TP53 mutations. The combination therapy more robustly induced pro-apoptotic proteins (PUMA and cleaved PARP) with increase of sub G1 population and apoptotic cells, compared with either single agent alone. The combination therapy significantly reduced tumor volume in mice (P < 0.001 in OVISE, and P = 0.038 in RMG-I) without severe body weight loss. Immunohistochemistry from the xenograft tumors showed that the combination treatment significantly reduced vascularity and cell proliferation, with an increase of apoptotic cell death. CONCLUSION A combination therapy targeting the PI3K pathway and MDM2 might be a promising therapeutic strategy in CCOC.
Collapse
Affiliation(s)
- Chinami Makii
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Yuji Ikeda
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan; Current address; Department of Obstetrics and Gynecology, Nihon University, Tokyo, Japan
| | - Katsutoshi Oda
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan.
| | - Yuriko Uehara
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan; Division of Genome Science, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Akira Nishijima
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan; Division of Genome Science, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Takahiro Koso
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan; Division of Genome Science, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Yoshiko Kawata
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Tomoko Kashiyama
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Aki Miyasaka
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Kenbun Sone
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Michihiro Tanikawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Tetsushi Tsuruga
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Mayuyo Mori-Uchino
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Kazunori Nagasaka
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Yoko Matsumoto
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Osamu Wada-Hiraike
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Kei Kawana
- Department of Obstetrics and Gynecology, Nihon University, Tokyo, Japan
| | - Kosei Hasegawa
- Department of Gynecologic Oncology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Keiichi Fujiwara
- Department of Gynecologic Oncology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Hiroyuki Aburatani
- Division of Genome Science, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Yutaka Osuga
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Japan
| |
Collapse
|
7
|
Kocik J, Machula M, Wisniewska A, Surmiak E, Holak TA, Skalniak L. Helping the Released Guardian: Drug Combinations for Supporting the Anticancer Activity of HDM2 (MDM2) Antagonists. Cancers (Basel) 2019; 11:E1014. [PMID: 31331108 PMCID: PMC6678622 DOI: 10.3390/cancers11071014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 07/13/2019] [Accepted: 07/16/2019] [Indexed: 01/22/2023] Open
Abstract
The protein p53, known as the "Guardian of the Genome", plays an important role in maintaining DNA integrity, providing protection against cancer-promoting mutations. Dysfunction of p53 is observed in almost every cancer, with 50% of cases bearing loss-of-function mutations/deletions in the TP53 gene. In the remaining 50% of cases the overexpression of HDM2 (mouse double minute 2, human homolog) protein, which is a natural inhibitor of p53, is the most common way of keeping p53 inactive. Disruption of HDM2-p53 interaction with the use of HDM2 antagonists leads to the release of p53 and expression of its target genes, engaged in the induction of cell cycle arrest, DNA repair, senescence, and apoptosis. The induction of apoptosis, however, is restricted to only a handful of p53wt cells, and, generally, cancer cells treated with HDM2 antagonists are not efficiently eliminated. For this reason, HDM2 antagonists were tested in combinations with multiple other therapeutics in a search for synergy that would enhance the cancer eradication. This manuscript aims at reviewing the recent progress in developing strategies of combined cancer treatment with the use of HDM2 antagonists.
Collapse
Affiliation(s)
- Justyna Kocik
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland
| | - Monika Machula
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland
| | - Aneta Wisniewska
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland
| | - Ewa Surmiak
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland
| | - Tad A Holak
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland
| | - Lukasz Skalniak
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland.
| |
Collapse
|
8
|
Saravanakumar K, Chelliah R, Hu X, Oh DH, Kathiresan K, Wang MH. Antioxidant, Anti-Lung Cancer, and Anti-Bacterial Activities of Toxicodendron vernicifluum. Biomolecules 2019; 9:E127. [PMID: 30934938 PMCID: PMC6523688 DOI: 10.3390/biom9040127] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/22/2019] [Accepted: 03/26/2019] [Indexed: 12/20/2022] Open
Abstract
This work tested antioxidant, anti-lung cancer, and antibacterial activities by in vitro, in vivo, and computational experiments for the metabolites extracted from the bark, seed, and stem of Toxicodendron vernicifluum. The results showed that all the extracts significantly scavenged 1,2-diphenyl-1-picrylhydrazyl (DPPH) in a dose-dependent manner. But, the total phenol content (TPC) ranged from 2.12 to 89.25% and total flavonoids content (TFC) ranged from 1.02 to 15.62% in the extracts. The methanolic bark extract (MBE) exhibited higher DPPH scavenging activity than the other extracts, probably due to the higher content of the TPC and TFC present in it. Among the extracts, only the MBE showed anti-lung cancer activity at an acceptable level with a therapeutic index value (22.26) against human lung carcinoma. This was due to the cancer cell death in A549 induced by MBE through reactive oxygen species (ROS) generation, apoptosis, and cell arrest in G1 phase and inhibition of anti-pro-apoptotic protein survivin. Among the extracts, MBE showed significantly higher antibacterial activity as evident through the higher zone of inhibition 13 ± 0.5 mm against methycilin resistant strain of Staphylococcus aureus (MRSA), Salmonila enteria subp. enterica, and P. aeruginosa, 11 ± 0.3 mm against E. coli and 10 ± 0.2 mm against B. cereus. The MBE also showed an excellent antibacterial activity with lower minimal inhibitory concentration (MIC). Particularly, the MBE showed more significant antibacterial activity in MRSA. The in vivo antibacterial activity of the MBE was further tested in C. elegans model. The treatment of the MRSA induced cell disruption, damage and increased mortality of C. elegans as compared to the untreated and MBE treated C. elegans with normal OP50 diet. Moreover, the MBE treatment enhanced the survival of the MRSA infected C. elegans. The compounds, such as 2,3,3-trimethyl-Octane and benzoic from the MBE, metabolized the novel bacterial topoisomerases inhibitor (NBTI) and MRSA related protein (PBP2a). Overall the T. vernicifluum is potentially bioactive as evident by antioxidant, anti-lung cancer, and antibacterial assays. Further studies were targeted on the purification of the novel compounds for the clinical evaluation.
Collapse
Affiliation(s)
- Kandasamy Saravanakumar
- Department of Medical Biotechnology, College of Biomedical Sciences, Kangwon National University, Chuncheon, Gangwon 24341, Korea.
| | - Ramachandran Chelliah
- Department of Food Science and Biotechnology College of Biotechnology and Bioscience, Kangwon National University, Chuncheon 200-701, Korea.
| | - Xiaowen Hu
- Department of Medical Biotechnology, College of Biomedical Sciences, Kangwon National University, Chuncheon, Gangwon 24341, Korea.
| | - Deog-Hwan Oh
- Department of Food Science and Biotechnology College of Biotechnology and Bioscience, Kangwon National University, Chuncheon 200-701, Korea.
| | - Kandasamy Kathiresan
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, Tamil Nadu, India.
| | - Myeong-Hyeon Wang
- Department of Medical Biotechnology, College of Biomedical Sciences, Kangwon National University, Chuncheon, Gangwon 24341, Korea.
| |
Collapse
|
9
|
Sestito S, Runfola M, Tonelli M, Chiellini G, Rapposelli S. New Multitarget Approaches in the War Against Glioblastoma: A Mini-Perspective. Front Pharmacol 2018; 9:874. [PMID: 30123135 PMCID: PMC6085564 DOI: 10.3389/fphar.2018.00874] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 07/19/2018] [Indexed: 12/22/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common tumor of the CNS, and the deadliest form of brain cancer. The rapid progression, the anatomic location in the brain and a deficient knowledge of the pathophysiology, often limit the effectiveness of therapeutic interventions. Current pillars of GBM therapies include surgical resection, radiotherapy and chemotherapy, but the low survival rate and the short life expectation following these treatments strongly underline the urgency to identify innovative and more effective therapeutic tools. Frequently, patients subjected to a mono-target therapy, such as Temozolomide (TMZ), develop drug resistance and undergo relapse, indicating that targeting a single cellular node is not sufficient for eradication of this disease. In this context, a multi-targeted therapeutic approach aimed at using compounds, alone or in combination, capable of inhibiting more than one specific molecular target, offers a promising alternative. Such strategies have already been well integrated into drug discovery campaigns, including in the field of anticancer drugs. In this miniperspective, we will discuss the recent progress in the treatment of GBM focusing on innovative and effective preclinical strategies, which are based on a multi-targeted approach.
Collapse
Affiliation(s)
| | | | - Marco Tonelli
- Biochemistry Department, University of Wisconsin-Madison, Madison, WI, United States
| | | | - Simona Rapposelli
- Department of Pharmacy, University of Pisa, Pisa, Italy
- Interdepartmental Research Centre for Biology and Pathology of Aging, University of Pisa, Pisa, Italy
| |
Collapse
|
10
|
Liu X, Zhang Y, Wang S, Liu G, Ruan L. Loss of miR-143 and miR-145 in condyloma acuminatum promotes cellular proliferation and inhibits apoptosis by targeting NRAS. ROYAL SOCIETY OPEN SCIENCE 2018; 5:172376. [PMID: 30225000 PMCID: PMC6124073 DOI: 10.1098/rsos.172376] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 08/03/2018] [Indexed: 05/08/2023]
Abstract
The expression profile of miRNAs and their function in condyloma acuminatum (CA) remains unknown. In this study, we aimed to detect the effects of miR-143 and miR-145, the most downregulated in CA samples using high-throughput sequencing, on cell proliferation and apoptosis, to determine a novel therapeutic target for CA recurrence. RT-qPCR was used to validate the lower expression of miR-143 and miR-145 in a larger size of CA samples, and the expression of NRAS in CA samples was significantly higher than self-controls as determined by western blotting assay. Luciferase assay was performed to confirm that miR-143 or miR-145 targeted NRAS directly. Transduction of LV-pre-miR-143 or LV-pre-miR-145 to human papilloma virus (HPV)-infected SiHa cells led to reduced proliferation, greater apoptosis and inhibition of expression of NRAS, PI3 K p110α and p-AKT. However, knockout of miR-143 or miR-145 in human epidermal keratinocytes by delivery of CRISPR/CAS9-gRNA for target miRNAs protected cells from apoptosis and upregulated expression of target genes as described above. MiR-143 and miR-145 sensitized cells to nutlin-3a, a p53 activator and MDM2 antagonist, while their loss protected cells from the stress of nutlin-3a. Furthermore, siRNA targeting NRAS showed similar effects on proliferation and apoptosis as miR-143 or miR-145. Taken together, our results suggest that loss of miR-143 or miR-145 in CA protects HPV-infected cells from apoptosis induced by environmental stress, in addition to promoting cellular proliferation and inhibiting apoptosis by targeting NRAS/PI3 K/ATK. Restoration of miR-143 or miR-145 might provide an applicable and novel approach to block the recurrence and progression of CA.
Collapse
Affiliation(s)
| | | | | | | | - Liming Ruan
- Department of Dermatology, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, People's Republic of China
| |
Collapse
|
11
|
Trino S, Iacobucci I, Erriquez D, Laurenzana I, De Luca L, Ferrari A, Ghelli Luserna Di Rorà A, Papayannidis C, Derenzini E, Simonetti G, Lonetti A, Venturi C, Cattina F, Ottaviani E, Abbenante MC, Russo D, Perini G, Musto P, Martinelli G. Targeting the p53-MDM2 interaction by the small-molecule MDM2 antagonist Nutlin-3a: a new challenged target therapy in adult Philadelphia positive acute lymphoblastic leukemia patients. Oncotarget 2017; 7:12951-61. [PMID: 26887044 PMCID: PMC4914334 DOI: 10.18632/oncotarget.7339] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 01/22/2016] [Indexed: 11/25/2022] Open
Abstract
MDM2 is an important negative regulator of p53 tumor suppressor. In this study, we sought to investigate the preclinical activity of the MDM2 antagonist, Nutlin-3a, in Philadelphia positive (Ph+) and negative (Ph-) leukemic cell line models, and primary B-acute lymphoblastic leukemia (ALL) patient samples. We demonstrated that Nutlin-3a treatment reduced viability and induced p53-mediated apoptosis in ALL cells with wild-type p53 protein, in a time and dose-dependent manner, resulting in the increased expression of pro-apoptotic proteins and key regulators of cell cycle arrest. The dose-dependent reduction in cell viability was confirmed in primary blast cells from B-ALL patients, including Ph+ ALL resistant patients carrying the T315I BCR-ABL1 mutation. Our findings provide a strong rational for further clinical investigation of Nutlin-3a in Ph+ and Ph- ALL.
Collapse
Affiliation(s)
- Stefania Trino
- Laboratory of Pre-Clinical and Translational Research, IRCCS Referral Cancer Center of Basilicata, Rionero in Vulture, Italy
| | - Ilaria Iacobucci
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Daniela Erriquez
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Ilaria Laurenzana
- Laboratory of Pre-Clinical and Translational Research, IRCCS Referral Cancer Center of Basilicata, Rionero in Vulture, Italy
| | - Luciana De Luca
- Laboratory of Pre-Clinical and Translational Research, IRCCS Referral Cancer Center of Basilicata, Rionero in Vulture, Italy
| | - Anna Ferrari
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Andrea Ghelli Luserna Di Rorà
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Cristina Papayannidis
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Enrico Derenzini
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Giorgia Simonetti
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Annalisa Lonetti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Claudia Venturi
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Federica Cattina
- Chair of Hematology and BMT Unit, University of Brescia, Brescia, Italy
| | - Emanuela Ottaviani
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Maria Chiara Abbenante
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Domenico Russo
- Chair of Hematology and BMT Unit, University of Brescia, Brescia, Italy
| | - Giovanni Perini
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Pellegrino Musto
- Scientific Direction, IRCCS Referral Cancer Center of Basilicata, Rionero in Vulture, Italy
| | - Giovanni Martinelli
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| |
Collapse
|
12
|
Davaadelger B, Perez RE, Zhou Y, Duan L, Gitelis S, Maki CG. The IGF-1R/AKT pathway has opposing effects on Nutlin-3a-induced apoptosis. Cancer Biol Ther 2017; 18:895-903. [PMID: 28696156 DOI: 10.1080/15384047.2017.1345397] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Nutlin-3a is a small molecule MDM2 antagonist and potent activator of wild-type p53. Nutlin-3a disrupts MDM2 binding to p53, thus increasing p53 levels and allowing p53 to inhibit proliferation or induce cell death. Factors that control sensitivity to Nutlin-3a-induced apoptosis are incompletely understood. In this study we isolated cisplatin-resistant clones from MHM cells, an MDM2-amplified and p53 wild-type osteosarcoma cell line. Cisplatin resistance in these clones resulted in part from heightened activation of the IGF-1R/AKT pathway. Interestingly, these cisplatin resistant clones showed hyper-sensitivity to Nutlin-3a induced apoptosis. Increased Nutlin-3a sensitivity was associated with reduced authophagy flux and a greater increase in p53 levels in response to Nutlin-3a treatment. IGF-1R and AKT inhibitors further increased apoptosis by Nutlin-3a in parental MHM cells and the cisplatin-resistant clones, confirming IGF-1R/AKT signaling promotes apoptosis resistance. However, IGF-1R and AKT inhibitors also reduced p53 accumulation in Nutlin-3a treated cells and increased autophagy flux, which we showed can promote apoptosis resistance. We conclude the IGF-1R/AKT pathway has opposing effects on Nutlin-3a-induced apoptosis. First, it can inhibit apoptosis, consistent with its well-established role as a survival-signaling pathway. Second, it can enhance Nutlin-3a induced apoptosis through a combination of maintaining p53 levels and inhibiting pro-survival autophagy.
Collapse
Affiliation(s)
- Batzaya Davaadelger
- a Department of Cell and Molecular Medicine , Rush University Medical Center , Chicago , IL , USA
| | - Ricardo E Perez
- a Department of Cell and Molecular Medicine , Rush University Medical Center , Chicago , IL , USA
| | - Yalu Zhou
- a Department of Cell and Molecular Medicine , Rush University Medical Center , Chicago , IL , USA
| | - Lei Duan
- a Department of Cell and Molecular Medicine , Rush University Medical Center , Chicago , IL , USA
| | - Steven Gitelis
- b Department of Orthopedic Oncology, Department of Orthopedic Surgery , Rush University Medical Center , Chicago , IL , USA
| | - Carl G Maki
- a Department of Cell and Molecular Medicine , Rush University Medical Center , Chicago , IL , USA
| |
Collapse
|
13
|
Shakeel E, Akhtar S, Khan MKA, Lohani M, Arif JM, Siddiqui MH. Molecular docking analysis of aplysin analogs targeting survivin protein. Bioinformation 2017; 13:293-300. [PMID: 29081608 PMCID: PMC5651222 DOI: 10.6026/97320630013293] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 09/20/2017] [Accepted: 09/20/2017] [Indexed: 01/05/2023] Open
Abstract
Survivin (IAP proteins) remains an important target for anticancer drug development as it is reported to be over-expressed in tumor cells to enhance resistance to apoptotic stimuli. The study focuses on virtual screening of marine compounds inhibiting survivin, a multifunctional protein, using a computational approach. Structures of compounds were prepared using ChemDraw Ultra 10. Software and converted into its 3D PDB structure and its energy was minimized using Discovery Studio client 2.5. The target protein, survivin was retrieved from RCSB PDB. Lipinski's rule and ADMET toxicity profiling was carried out on marine compounds and the filtered compounds were further promoted for molecular docking analysis and interaction studies using AutoDock Tools 4.0. Molecular docking results revealed that analog (AP 4) of Aplysin, showed very promising inhibitory potential against survivin with a binding energy of -8.75 kcal/mol and Ki 388.28 nM as compared to its known inhibitor, Celecoxib having binding energy of -6.65 kcal/mol and Ki 13.43 μM. AP 4. The analog depicted similarity in pattern when compared to standard. The result proposes AP 4, is an effective molecule exhibiting prominent potential to inhibit survivin and thus promoting apoptosis in tumor cells.
Collapse
Affiliation(s)
- Eram Shakeel
- Advanced Centre for Bioengineering and Bioinformatics (ACBB), Integral Information and Research Centre (IIRC), Integral University, Lucknow, Uttar Pradesh, India-226026
- Department of Bioengineering, Faculty of Engineering, Integral University, Lucknow, Uttar Pradesh, India-226026
| | - Salman Akhtar
- Advanced Centre for Bioengineering and Bioinformatics (ACBB), Integral Information and Research Centre (IIRC), Integral University, Lucknow, Uttar Pradesh, India-226026
- Department of Bioengineering, Faculty of Engineering, Integral University, Lucknow, Uttar Pradesh, India-226026
| | - Mohd. Kalim Ahmad Khan
- Advanced Centre for Bioengineering and Bioinformatics (ACBB), Integral Information and Research Centre (IIRC), Integral University, Lucknow, Uttar Pradesh, India-226026
- Department of Bioengineering, Faculty of Engineering, Integral University, Lucknow, Uttar Pradesh, India-226026
| | - Mohtashim Lohani
- Department of Biosciences, Integral University, Lucknow, Uttar Pradesh, India-226026
| | - Jamal M. Arif
- Advanced Centre for Bioengineering and Bioinformatics (ACBB), Integral Information and Research Centre (IIRC), Integral University, Lucknow, Uttar Pradesh, India-226026
- Department of Biosciences, Integral University, Lucknow, Uttar Pradesh, India-226026
| | - Mohd. Haris Siddiqui
- Advanced Centre for Bioengineering and Bioinformatics (ACBB), Integral Information and Research Centre (IIRC), Integral University, Lucknow, Uttar Pradesh, India-226026
- Department of Bioengineering, Faculty of Engineering, Integral University, Lucknow, Uttar Pradesh, India-226026
| |
Collapse
|
14
|
Trino S, De Luca L, Laurenzana I, Caivano A, Del Vecchio L, Martinelli G, Musto P. P53-MDM2 Pathway: Evidences for A New Targeted Therapeutic Approach in B-Acute Lymphoblastic Leukemia. Front Pharmacol 2016; 7:491. [PMID: 28018226 PMCID: PMC5159974 DOI: 10.3389/fphar.2016.00491] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 11/30/2016] [Indexed: 11/13/2022] Open
Abstract
The tumor suppressor p53 is a canonical regulator of different biological functions, like apoptosis, cell cycle arrest, DNA repair, and genomic stability. This gene is frequently altered in human tumors generally by point mutations or deletions. Conversely, in acute lymphoblastic leukemia (ALL) genomic alterations of TP53 are rather uncommon, and prevalently occur in patients at relapse or with poor prognosis. On the other hand, p53 pathway is often compromised by the inactivation of its regulatory proteins, as MDM2 and ARF. MDM2 inhibitor molecules are able to antagonize p53-MDM2 interaction allowing p53 to exert tumor suppressor transcriptional regulation and to induce apoptotic pathways. Recent preclinical and clinical studies propose that MDM2 targeted therapy represents a promising anticancer strategy restoring p53 dependent mechanisms in ALL disease. Here, we discussed the use of new small molecule targeting p53 pathways as a promising drug target therapy in ALL.
Collapse
Affiliation(s)
- Stefania Trino
- Laboratory of Pre-Clinical and Translational Research, IRCCS - Referral Cancer Center of Basilicata Rionero in Vulture (PZ), Italy
| | - Luciana De Luca
- Laboratory of Pre-Clinical and Translational Research, IRCCS - Referral Cancer Center of Basilicata Rionero in Vulture (PZ), Italy
| | - Ilaria Laurenzana
- Laboratory of Pre-Clinical and Translational Research, IRCCS - Referral Cancer Center of Basilicata Rionero in Vulture (PZ), Italy
| | - Antonella Caivano
- Laboratory of Pre-Clinical and Translational Research, IRCCS - Referral Cancer Center of Basilicata Rionero in Vulture (PZ), Italy
| | - Luigi Del Vecchio
- CEINGE - Biotecnologie Avanzate S.C.a R.L.Naples, Italy; Department of Molecular Medicine and Medical Biotechnologies, Universita' degli Studi di Napoli Federico IINaples, Italy
| | - Giovanni Martinelli
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli," University of Bologna Bologna, Italy
| | - Pellegrino Musto
- Scientific Direction, IRCCS - Referral Cancer Center of Basilicata Rionero in Vulture (PZ), Italy
| |
Collapse
|
15
|
Sam MR, Esmaeillou M, Shokrgozar MA. Fish-Oil-Derived DHA-mediated Enhancement of Apoptosis in Acute Lymphoblastic Leukemia Cells is Associated with Accumulation of p53, Downregulation of Survivin, and Caspase-3 Activation. Nutr Cancer 2016; 69:64-73. [DOI: 10.1080/01635581.2017.1247884] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
16
|
Lee SC, Kim OH, Lee SK, Kim SJ. IWR-1 inhibits epithelial-mesenchymal transition of colorectal cancer cells through suppressing Wnt/β-catenin signaling as well as survivin expression. Oncotarget 2016; 6:27146-59. [PMID: 26450645 PMCID: PMC4694979 DOI: 10.18632/oncotarget.4354] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 09/04/2015] [Indexed: 02/05/2023] Open
Abstract
Aberrant activation of Wnt/β-catenin signaling is frequently observed in patients with colorectal cancer (CRC) and is considered a major determinant of CRC pathogenesis. CRC pathogenesis is particularly accompanied by epithelial-mesenchymal transition (EMT) and survivin expression. Here, we investigated the potential and mechanism of a novel Wnt/β-catenin inhibitor IWR-1 to suppress tumor metastasis in relation with EMT and survivin expression. We first determined the EMT reversal effects of IWR-1 in in vitro (HCT116 and HT29 cells) and ex vivo (specimens of CRC patients) CRC models. It was shown that IWR-1 inhibited cell proliferation and EMT even in the presence of TNF-α-induced cancer cell stimulation. IWR-1 also significantly suppressed cell migration, invasion, and matrix metalloproteinase activities of CRC cell lines. Furthermore, we showed the evidence that IWR-1 provides EMT reversal effects by directly suppressing survivin expression by the followings: 1) IWR-1 could not completely inhibit EMT in survivin-overexpressing HCT116 cells, 2) EMT reversal effects of IWR-1 were more pronounced in survivin-suppressed cells, and 3) Survivin promoter assay directly identified the survivin promoter region responsible for inhibition of survivin transcription by IWR-1. Taken altogether, our results demonstrate that IWR-1 has the potential to suppress tumor metastasis by inhibiting Wnt/β-catenin pathway as well as survivin expression. Therefore, IWR-1 could be considered for future clinical use as a therapeutic agent to treat CRC.
Collapse
Affiliation(s)
- Sang Chul Lee
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Ok-Hee Kim
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Sang Kuon Lee
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Say-June Kim
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Republic of Korea
| |
Collapse
|
17
|
Richmond J, Carol H, Evans K, High L, Mendomo A, Robbins A, Meyer C, Venn NC, Marschalek R, Henderson M, Sutton R, Kurmasheva RT, Kees UR, Houghton PJ, Smith MA, Lock RB. Effective targeting of the P53-MDM2 axis in preclinical models of infant MLL-rearranged acute lymphoblastic leukemia. Clin Cancer Res 2015; 21:1395-405. [PMID: 25573381 DOI: 10.1158/1078-0432.ccr-14-2300] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Although the overall cure rate for pediatric acute lymphoblastic leukemia (ALL) approaches 90%, infants with ALL harboring translocations in the mixed-lineage leukemia (MLL) oncogene (infant MLL-ALL) experience shorter remission duration and lower survival rates (∼50%). Mutations in the p53 tumor-suppressor gene are uncommon in infant MLL-ALL, and drugs that release p53 from inhibitory mechanisms may be beneficial. The purpose of this study was to assess the efficacy of the orally available nutlin, RG7112, against patient-derived MLL-ALL xenografts. EXPERIMENTAL DESIGN Eight MLL-ALL patient-derived xenografts were established in immune-deficient mice, and their molecular features compared with B-lineage ALL and T-ALL xenografts. The sensitivity of MLL-ALL xenografts to RG7112 was assessed in vitro and in vivo, and the ability of RG7112 to induce p53, cell-cycle arrest, and apoptosis in vivo was evaluated. RESULTS Gene-expression analysis revealed that MLL-ALL, B-lineage ALL, and T-ALL xenografts clustered according to subtype. Moreover, genes previously reported to be overexpressed in MLL-ALL, including MEIS1, CCNA1, and members of the HOXA family, were significantly upregulated in MLL-ALL xenografts, confirming their ability to recapitulate the clinical disease. Exposure of MLL-ALL xenografts to RG7112 in vivo caused p53 upregulation, cell-cycle arrest, and apoptosis. RG7112 as a single agent induced significant regressions in infant MLL-ALL xenografts. Therapeutic enhancement was observed when RG7112 was assessed using combination treatment with an induction-type regimen (vincristine/dexamethasone/L-asparaginase) against an MLL-ALL xenograft. CONCLUSIONS The utility of targeting the p53-MDM2 axis in combination with established drugs for the management of infant MLL-ALL warrants further investigation.
Collapse
Affiliation(s)
- Jennifer Richmond
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia
| | - Hernan Carol
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia
| | - Kathryn Evans
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia
| | - Laura High
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia
| | - Agnes Mendomo
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia
| | - Alissa Robbins
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia
| | - Claus Meyer
- Institute of Pharmaceutical Biology/Diagnostic Center of Acute Leukemia (DCAL), Goethe-University of Frankfurt, Frankfurt/Main, Germany
| | - Nicola C Venn
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia
| | - Rolf Marschalek
- Institute of Pharmaceutical Biology/Diagnostic Center of Acute Leukemia (DCAL), Goethe-University of Frankfurt, Frankfurt/Main, Germany
| | - Michelle Henderson
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia
| | - Rosemary Sutton
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia
| | | | - Ursula R Kees
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| | - Peter J Houghton
- Center for Childhood Cancer, Nationwide Children's Hospital, Columbus, Ohio
| | | | - Richard B Lock
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW, Sydney, Australia.
| |
Collapse
|
18
|
Saiki AY, Caenepeel S, Yu D, Lofgren JA, Osgood T, Robertson R, Canon J, Su C, Jones A, Zhao X, Deshpande C, Payton M, Ledell J, Hughes PE, Oliner JD. MDM2 antagonists synergize broadly and robustly with compounds targeting fundamental oncogenic signaling pathways. Oncotarget 2015; 5:2030-43. [PMID: 24810962 PMCID: PMC4039142 DOI: 10.18632/oncotarget.1918] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
While MDM2 inhibitors hold great promise as cancer therapeutics, drug resistance will likely limit their efficacy as single agents. To identify drug combinations that might circumvent resistance, we screened for agents that could synergize with MDM2 inhibition in the suppression of cell viability. We observed broad and robust synergy when combining MDM2 antagonists with either MEK or PI3K inhibitors. Synergy was not limited to cell lines harboring MAPK or PI3K pathway mutations, nor did it depend on which node of the PI3K axis was targeted. MDM2 inhibitors also synergized strongly with BH3 mimetics, BCR-ABL antagonists, and HDAC inhibitors. MDM2 inhibitor-mediated synergy with agents targeting these mechanisms was much more prevalent than previously appreciated, implying that clinical translation of these combinations could have far-reaching implications for public health. These findings highlight the importance of combinatorial drug targeting and provide a framework for the rational design of MDM2 inhibitor clinical trials.
Collapse
Affiliation(s)
- Anne Y Saiki
- Department of Oncology Research, Amgen, Thousand Oaks, CA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Van Maerken T, Rihani A, Van Goethem A, De Paepe A, Speleman F, Vandesompele J. Pharmacologic activation of wild-type p53 by nutlin therapy in childhood cancer. Cancer Lett 2013; 344:157-65. [PMID: 24262662 DOI: 10.1016/j.canlet.2013.11.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 10/20/2013] [Accepted: 11/10/2013] [Indexed: 02/08/2023]
Abstract
A peculiar feature of several types of childhood cancer is that loss-of-function mutations of the TP53 (p53) tumor suppressor gene are uncommon, in contrast to many adult tumors. As p53 needs to be inactivated in order for tumor cells to survive and thrive, pediatric tumors typically make use of other mechanisms to keep p53 in check. One of the critical negative regulators of p53 is the MDM2 oncoprotein. Many anticancer drug development efforts in the past decade have therefore been devoted to the discovery and optimization of small molecules that selectively disrupt the interaction between MDM2 and p53, which could provide, in principle, a potent means to restore p53 function in tumor cells with wild-type p53. The nutlins are the class of selective inhibitors of the p53-MDM2 interaction that are currently most advanced in their clinical development. We review here the preclinical data that support the potential therapeutic use of nutlin drugs in the treatment of various pediatric tumors, including neuroblastoma, retinoblastoma, osteosarcoma, Ewing's sarcoma, rhabdomyosarcoma, medulloblastoma, and childhood acute lymphoblastic leukemia.
Collapse
Affiliation(s)
- Tom Van Maerken
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.
| | - Ali Rihani
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Alan Van Goethem
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Anne De Paepe
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Frank Speleman
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Jo Vandesompele
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| |
Collapse
|
20
|
Saha MN, Qiu L, Chang H. Targeting p53 by small molecules in hematological malignancies. J Hematol Oncol 2013; 6:23. [PMID: 23531342 PMCID: PMC3614876 DOI: 10.1186/1756-8722-6-23] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 03/13/2013] [Indexed: 12/11/2022] Open
Abstract
p53 is a powerful tumor suppressor and is an attractive cancer therapeutic target. A breakthrough in cancer research came from the discovery of the drugs which are capable of reactivating p53 function. Most anti-cancer agents, from traditional chemo- and radiation therapies to more recently developed non-peptide small molecules exert their effects by enhancing the anti-proliferative activities of p53. Small molecules such as nutlin, RITA, and PRIMA-1 that can activate p53 have shown their anti-tumor effects in different types of hematological malignancies. Importantly, nutlin and PRIMA-1 have successfully reached the stage of phase I/II clinical trials in at least one type of hematological cancer. Thus, the pharmacological activation of p53 by these small molecules has a major clinical impact on prognostic use and targeted drug design. In the current review, we present the recent achievements in p53 research using small molecules in hematological malignancies. Anticancer activity of different classes of compounds targeting the p53 signaling pathway and their mechanism of action are discussed. In addition, we discuss how p53 tumor suppressor protein holds promise as a drug target for recent and future novel therapies in these diseases.
Collapse
Affiliation(s)
- Manujendra N Saha
- Division of Molecular and Cellular Biology, Toronto General Research Institute, Toronto, Canada
| | | | | |
Collapse
|
21
|
Abstract
The MDM2 and MDMX (also known as HDMX and MDM4) proteins are deregulated in many human cancers and exert their oncogenic activity predominantly by inhibiting the p53 tumour suppressor. However, the MDM proteins modulate and respond to many other signalling networks in which they are embedded. Recent mechanistic studies and animal models have demonstrated how functional interactions in these networks are crucial for maintaining normal tissue homeostasis, and for determining responses to oncogenic and therapeutic challenges. This Review highlights the progress made and pitfalls encountered as the field continues to search for MDM-targeted antitumour agents.
Collapse
Affiliation(s)
- Mark Wade
- Center for Genomic Science of IIT@SEMM, Fondazione Istituto Italiano di Tecnologia, Via Adamello 16, 20139 Milan, Italy
| | | | | |
Collapse
|
22
|
Huang M, Zhang H, Liu T, Tian D, Gu L, Zhou M. Triptolide inhibits MDM2 and induces apoptosis in acute lymphoblastic leukemia cells through a p53-independent pathway. Mol Cancer Ther 2012; 12:184-94. [PMID: 23243057 DOI: 10.1158/1535-7163.mct-12-0425] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Triptolide, a natural product derived from the Chinese plant Tripterygium wilfordii, is reported to exhibit antitumor effects in a broad range of cancers. The antitumor activity of triptolide is associated with its biologic activities, as it inhibits various proproliferative or antiapoptotic factors that are dominantly expressed in given types of cancer cells. Herein, we show that triptolide induced apoptosis in a subgroup of acute lymphoblastic leukemia (ALL) cells overexpressing the MDM2 oncoprotein by inhibiting MDM2 expression. More specifically, we found that triptolide inhibited MDM2 at the transcriptional level by suppressing its mRNA synthesis. This MDM2 inhibition led in turn to increased levels of p53 protein; however, p53 functionality was not activated due to the fact that triptolide-treated cells lacked induction of p21 and PUMA as well as in G(1) cell-cycle arrest. Triptolide-mediated downregulation of MDM2 increased inhibition of X-linked inhibitor of apoptosis protein (XIAP), its translational target, in a manner distinct from reactions to cellular stress and DNA-damaging agent ionizing radiation that induce XIAP due to p53-activated MDM2. These results suggest that increased inhibition of XIAP due to downregulation of MDM2 may play a critical role in triptolide-induced apoptosis in MDM2-overexpressing cancers.
Collapse
Affiliation(s)
- Mei Huang
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | | | | | | | | | | |
Collapse
|
23
|
Morishita N, Tsukahara H, Chayama K, Ishida T, Washio K, Miyamura T, Yamashita N, Oda M, Morishima T. Activation of Akt is associated with poor prognosis and chemotherapeutic resistance in pediatric B-precursor acute lymphoblastic leukemia. Pediatr Blood Cancer 2012; 59:83-9. [PMID: 22183914 DOI: 10.1002/pbc.24034] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Accepted: 11/14/2011] [Indexed: 12/12/2022]
Abstract
BACKGROUND Activation of the phosphoinositide 3-kinase (PI3K)/Akt pathway, a pro-survival pathway, plays important roles in tumor cell growth. However, the role of Akt in the pathogenesis of pediatric B-precursor acute lymphoblastic leukemia (B-pre ALL) remains to be clarified. This study was undertaken to explore the clinical relevance and molecular mechanisms underlying the activation of Akt (i.e., phosphorylated Akt, P-Akt) in pediatric B-pre ALL. PROCEDURE We evaluated the activation status of Akt in bone marrow samples from 21 children with newly diagnosed B-pre ALL and correlated the expression level of P-Akt with clinicopathologic and prognostic features. Additionally, we transfected the myristoylated Akt cDNA into the B-pre ALL cell line, Nalm-6, and examined the effect, in vitro, of Akt activation on the response to antitumor drugs. RESULTS P-Akt expression in B-pre ALL blast cells at diagnosis was associated significantly with poor response to induction chemotherapy including prednisolone, dexamethasone, vincristine, and adriamycin in B-pre ALL patients. Both overall survival and relapse-free survival in patients with P-Akt expression were reduced significantly more than in patients without P-Akt expression. Activation of Akt reduced the extent of apoptosis induced by the antitumor drugs in Nalm-6 listed above. Activation of Akt did not induce expression of P-glycoprotein, a drug transporter that is capable of conferring multidrug resistance. CONCLUSION These results support the contention that Akt activation is a mechanism of chemotherapeutic resistance in B-pre ALL and suggest that Akt can be a therapeutic target for the treatment of relapsed or refractory pediatric B-pre ALL.
Collapse
Affiliation(s)
- Naoto Morishita
- Department of Pediatrics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Manfé V, Biskup E, Johansen P, Kamstrup MR, Krejsgaard TF, Morling N, Wulf HC, Gniadecki R. MDM2 Inhibitor Nutlin-3a Induces Apoptosis and Senescence in Cutaneous T-Cell Lymphoma: Role of p53. J Invest Dermatol 2012; 132:1487-96. [DOI: 10.1038/jid.2012.10] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
25
|
Lee J, Jiffar T, Kupferman ME. A novel role for BDNF-TrkB in the regulation of chemotherapy resistance in head and neck squamous cell carcinoma. PLoS One 2012; 7:e30246. [PMID: 22276165 PMCID: PMC3262811 DOI: 10.1371/journal.pone.0030246] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 12/15/2011] [Indexed: 02/06/2023] Open
Abstract
Mechanisms of resistance for HNSCC to cisplatin (CDDP), the foundational chemotherapeutic agent in the treatment of this disease, remain poorly understood. We previously demonstrated that cisplatin resistance (CR) can be overcome by targeting Trk receptor. In the current study, we explored the potential mechanistic role of the BDNF-TrkB signaling system in the development of CDDP resistance in HNSCC. Utilizing an in vitro system of acquired CR, we confirmed a substantial up-regulation of both BDNF and TrkB at the protein and mRNA levels in CR cells, suggesting an autocrine pathway dysregulation in this system. Exogenous BDNF stimulation led to an enhanced expression of the drug-resistance and anti-apoptotic proteins MDR1 and XiAP, respectively, in a dose-dependently manner, demonstrating a key role for BDNF-TrkB signaling in modulating the response to cytotoxic agents. In addition, modulation of TrkB expression induced an enhanced sensitivity of cells to CDDP in HNSCC. Moreover, genetic suppression of TrkB resulted in changes in expression of Bim, XiAP, and MDR1 contributing to HNSCC survival. To elucidate intracellular signaling pathways responsible for mechanisms underlying BDNF/TrkB induced CDDP-resistance, we analyzed expression levels of these molecules following inhibition of Akt. Inhibition of Akt eliminated BDNF effect on MDR1 and Bim expression in OSC-19P cells as well as modulated expressions of MDR1, Bim, and XiAP in OSC-19CR cells. These results suggest BDNF/TrkB system plays critical roles in CDDP-resistance development by utilizing Akt-dependent signaling pathways.
Collapse
MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Antineoplastic Agents/pharmacology
- Apoptosis Regulatory Proteins/genetics
- Apoptosis Regulatory Proteins/metabolism
- Bcl-2-Like Protein 11
- Blotting, Western
- Brain-Derived Neurotrophic Factor/genetics
- Brain-Derived Neurotrophic Factor/metabolism
- Carcinoma, Squamous Cell/metabolism
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Cisplatin/pharmacology
- Drug Resistance, Neoplasm/genetics
- Enzyme-Linked Immunosorbent Assay
- Head and Neck Neoplasms/metabolism
- Humans
- Immunohistochemistry
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins/metabolism
- Receptor, trkB/genetics
- Receptor, trkB/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Squamous Cell Carcinoma of Head and Neck
- X-Linked Inhibitor of Apoptosis Protein/genetics
- X-Linked Inhibitor of Apoptosis Protein/metabolism
Collapse
Affiliation(s)
- Junegoo Lee
- Department of Head and Neck Surgery, MD Anderson Cancer Center, University of Texas, Houston, Texas, United States of America
| | - Tilahun Jiffar
- Department of Head and Neck Surgery, MD Anderson Cancer Center, University of Texas, Houston, Texas, United States of America
| | - Michael E. Kupferman
- Department of Head and Neck Surgery, MD Anderson Cancer Center, University of Texas, Houston, Texas, United States of America
- * E-mail:
| |
Collapse
|
26
|
Ahmed MB, Shehata HH, Moussa M, Ibrahim TM. Prognostic significance of survivin and tumor necrosis factor-alpha in adult acute lymphoblastic leukemia. Clin Biochem 2011; 45:112-6. [PMID: 21933669 DOI: 10.1016/j.clinbiochem.2011.08.1147] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 08/23/2011] [Accepted: 08/24/2011] [Indexed: 10/17/2022]
Abstract
OBJECTIVES Acute lymphoblastic leukemia (ALL) is an aggressive cancer especially in adults as only 20-40% are cured with current treatment regimens. DESIGN AND METHODS We measured survivin and tumor necrosis factor-alpha (TNF-α) in serum of 30 ALL patients before and after induction therapy and compared to 30 age and sex matched normal adults. RESULTS Survivin at cutoff value 15.18 pg/mL was detected in all ALL patients before therapy but in only 83.33% after therapy and not detected in the control group; P<0.001. However TNF-α at cutoff value 60.05 pg/mL was detected in 90% ALL patients before therapy and 86.6% after therapy that was significantly higher than the control group (20%); P<0.001. Survivin showed a significant positive correlation with TNF-α (P<0.05), bone marrow blast cells (P<0.01), peripheral blast cells (P<0.05) and Philadelphia chromosome (P<0.01). CONCLUSIONS Survivin may have an important role in the development of acute leukemia and it could serve as a significant prognostic marker.
Collapse
|
27
|
Abstract
Although the cure rate of newly diagnosed acute lymphoblastic leukemia (ALL) has improved over the past four decades, the outcome for patients who relapse remains poor. New therapies are needed for these patients. Our previous global gene expression analysis in a series of paired diagnosis-relapse pediatric patient samples revealed that the antiapoptotic gene survivin was consistently upregulated upon disease relapse. In this study, we demonstrate a link between survivin expression and drug resistance and test the efficacy of a novel antisense agent in promoting apoptosis when combined with chemotherapy. Gene-silencing experiments targeting survivin mRNA using either short-hairpin RNA (shRNA) or a locked antisense oligonucleotide (LNA-ON) specifically reduced gene expression and induced apoptosis in leukemia cell lines. When used in combination with chemotherapy, the survivin shRNA and LNA-ON potentiated the chemotherapeutic antileukemia effect. Moreover, in a mouse primary xenograft model of relapse ALL, the survivin LNA-ON decreased survivin expression in a subset of animals, and produced a statistically significant decrease in tumor progression. Taken together, these findings suggest that targeting endogenous levels of survivin mRNA by LNA-ON methods may augment the response to standard chemotherapy by sensitizing otherwise resistant tumor cells to chemotherapy.
Collapse
|
28
|
Vaseva AV, Yallowitz AR, Marchenko ND, Xu S, Moll UM. Blockade of Hsp90 by 17AAG antagonizes MDMX and synergizes with Nutlin to induce p53-mediated apoptosis in solid tumors. Cell Death Dis 2011; 2:e156. [PMID: 21562588 PMCID: PMC3122118 DOI: 10.1038/cddis.2011.39] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Accepted: 03/10/2011] [Indexed: 12/15/2022]
Abstract
Strategies to induce p53 activation in wtp53-retaining tumors carry high potential in cancer therapy. Nutlin, a potent highly selective MDM2 inhibitor, induces non-genotoxic p53 activation. Although Nutlin shows promise in promoting cell death in hematopoietic malignancies, a major roadblock is that most solid cancers do not undergo apoptosis but merely reversible growth arrest. p53 inhibition by unopposed MDMX is one major cause for apoptosis resistance to Nutlin. The Hsp90 chaperone is ubiquitously activated in cancer cells and supports oncogenic survival pathways, many of which antagonize p53. The Hsp90 inhibitor 17-allylamino-17-demethoxygeldanamycin (17AAG) is known to induce p53-dependent apoptosis. We show here that in multiple difficult-to-kill solid tumor cells 17AAG modulates several critical components that synergize with Nutlin-activated p53 signaling to convert Nutlin's transient cytostatic response into a cytotoxic killing response in vitro and in xenografts. Combined with Nutlin, 17AAG destabilizes MDMX, reduces MDM2, induces PUMA and inhibits oncogenic survival pathways, such as PI3K/AKT, which counteract p53 signaling at multiple levels. Mechanistically, 17AAG interferes with the repressive MDMX-p53 axis by inducing robust MDMX degradation, thereby markedly increasing p53 transcription compared with Nutlin alone. To our knowledge Nutlin+17AAG represents the first effective pharmacologic knockdown of MDMX. Our study identifies 17AAG as a promising synthetic lethal partner for a more efficient Nutlin-based therapy.
Collapse
Affiliation(s)
- A V Vaseva
- Graduate program in Molecular and Cellular Biology, Stony Brook University, Stony Brook, NY 11794, USA
- Department of Pathology, Stony Brook University, Stony Brook, NY 11794, USA
| | - A R Yallowitz
- Department of Pathology, Stony Brook University, Stony Brook, NY 11794, USA
| | - N D Marchenko
- Department of Pathology, Stony Brook University, Stony Brook, NY 11794, USA
| | - S Xu
- Department of Pathology, Stony Brook University, Stony Brook, NY 11794, USA
| | - U M Moll
- Department of Pathology, Stony Brook University, Stony Brook, NY 11794, USA
| |
Collapse
|
29
|
Shen H, Maki CG. Pharmacologic activation of p53 by small-molecule MDM2 antagonists. Curr Pharm Des 2011; 17:560-8. [PMID: 21391906 PMCID: PMC3613239 DOI: 10.2174/138161211795222603] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Accepted: 03/03/2011] [Indexed: 11/22/2022]
Abstract
Restoring p53 activity by inhibiting the interaction between p53 and MDM2 represents an attractive approach for cancer therapy. To this end, a number of small-molecule p53-MDM2 binding inhibitors have been developed during the past several years. Nutlin-3 is a potent and selective small-molecule MDM2 antagonist that has shown considerable promise in pre-clinical studies. This review will highlight recent advances in the development of small-molecule MDM2 antagonists as potential cancer therapeutics, with special emphasis on Nutlin-3.
Collapse
Affiliation(s)
- Hong Shen
- Department of Anatomy and Cell Biology, Rush University Medical Center, 1750 W Harrison Ave, Jelke Building, room 1306
| | - Carl G. Maki
- Department of Anatomy and Cell Biology, Rush University Medical Center, 1750 W Harrison Ave, Jelke Building, room 1306
| |
Collapse
|
30
|
Ito A, Nakano H, Shinohara K. Role of wild-type p53 in apoptotic and non-apoptotic cell death induced by X-irradiation and heat treatment in p53-mutated mouse M10 cells. JOURNAL OF RADIATION RESEARCH 2010; 51:665-673. [PMID: 20972365 DOI: 10.1269/jrr.10056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The sensitizing effects of wild-type p53 on X-ray-induced cell death and on heat-induced apoptosis in M10, a radiosensitive and Trp53 (mouse p53 gene)-mutated lymphoma cell line which dies through necrosis by X-irradiation, were investigated using three M10 derived transfectants with wild-type TP53 (human p53 gene). Cell death was determined by colony formation and/or dye exclusion test, and apoptosis was detected as the changes in nuclear morphology by Giemsa staining. Expression of wild-type p53 protein increased radiosensitivity of cell death as determined by both clonogenic and dye exclusion assays. This increase in radiosensitivity was attributable largely to apoptosis induction in addition to a small enhancement of necrosis. Interestingly neither pathway to cell death was accompanied by caspase-3 activation. On the other hand, heat-induced caspase-3 dependent apoptotic cell death without transfection was further increased by the transfection of wild-type p53. In conclusion, the introduction of wild-type p53 enhanced apoptotic cell death by X-rays or heat via different mechanisms that do or do not activate caspase-3, respectively. In addition, p53 also enhanced the X-ray-induced necrosis in M10 cells.
Collapse
Affiliation(s)
- Atsushi Ito
- Department of Nuclear Engineering, School of Engineering, Tokai University, Hiratsuka-shi, Kanagawa, Japan.
| | | | | |
Collapse
|
31
|
Bava SV, Sreekanth CN, Thulasidasan AKT, Anto NP, Cheriyan VT, Puliyappadamba VT, Menon SG, Ravichandran SD, Anto RJ. Akt is upstream and MAPKs are downstream of NF-κB in paclitaxel-induced survival signaling events, which are down-regulated by curcumin contributing to their synergism. Int J Biochem Cell Biol 2010; 43:331-41. [PMID: 20883815 DOI: 10.1016/j.biocel.2010.09.011] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Revised: 09/15/2010] [Accepted: 09/20/2010] [Indexed: 11/30/2022]
Abstract
Paclitaxel is the most promising chemotherapeutic agent of plant origin despite its high cost and dose-limiting toxicity. Our earlier report has shown that cervical cancer cells can be sensitized by curcumin to paclitaxel-induced apoptosis through down-regulation of NF-κB and Akt. In the present study we have attempted to decipher the signaling pathways regulating the synergism of paclitaxel and curcumin. The study has clearly proved that Akt and NF-κB function successively in the sequence of paclitaxel induced signaling events where Akt is upstream of NF-κB. While inhibition of NF-κB led to complete inhibition of the synergism of paclitaxel and curcumin, inhibition of Akt brought about only partial reduction of the same, suggesting that, apart from Akt, there are other pathways induced by paclitaxel leading to NF-κB activation, which are also down-regulated by curcumin. Inactivation of NF-κB did not affect the activation of Akt and survivin, while that of Akt significantly inhibited NF-κB and completely inhibited up-regulation of survivin. Up-regulation of Cyclin-D1, Cox-2, XIAP and cIAP1 and phosphorylation of MAPKs, were completely inhibited on inactivation of NF-κB assigning a key regulatory role to NF-κB in the synergistic effect of paclitaxel and curcumin. While up-regulation of survivin by paclitaxel is regulated by Akt, independent of NF-κB, inactivation of neither Akt nor NF-κB produced any change in Bcl-2 level suggesting a distinct pathway for its action. As curcumin could effectively down-regulate all these survival signals induced by paclitaxel, we suggest it as a potent chemosensitizer to improve the therapeutic index of paclitaxel.
Collapse
Affiliation(s)
- Smitha V Bava
- Integrated Cancer Research Program, Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala-695014, India
| | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Lee-Sherick AB, Linger RMA, Gore L, Keating AK, Graham DK. Targeting paediatric acute lymphoblastic leukaemia: novel therapies currently in development. Br J Haematol 2010; 151:295-311. [PMID: 20813012 DOI: 10.1111/j.1365-2141.2010.08282.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Modifications to the treatment of acute lymphoblastic leukaemia (ALL) in children have led to a dramatic increase in survival in the past 40 years. Despite this success, a significant subset of paediatric leukaemia patients either relapse or fail to ever achieve a complete remission. Additionally, some patients necessitate treatment with intensified chemotherapy regimens due to clinical or laboratory findings which identify them as high risk. These patients are unlikely to respond to further minor adjustments to the dosing or timing of administration of the same chemotherapy medications. Many novel targeted therapies for the treatment of childhood ALL provide potential mechanisms to further improve cure rates, and provide the possibility of minimizing toxicity to non-malignant cells, given their specificity to malignant cell phenotypes. This article explores many of the potential targeted therapies in varying stages of development, from those currently in clinical trials to those still being refined in the research laboratory.
Collapse
Affiliation(s)
- Alisa B Lee-Sherick
- Department of Paediatrics, Section of Haematology, Oncology, and Bone Marrow Transplantation, University of Colorado Denver School of Medicine, Aurora, CO, USA
| | | | | | | | | |
Collapse
|
33
|
Zhang L, Yan Y, Zhu D, Yang W, Wang W, Hu Y, Yang B, He Q. Nutlin-1 strengthened anti-proliferation and differentiation-inducing activity of ATRA in ATRA-treated p-glycoprotein deregulated human myelocytic leukemia cells. Invest New Drugs 2010; 30:37-47. [PMID: 20686816 DOI: 10.1007/s10637-010-9512-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Accepted: 07/26/2010] [Indexed: 01/22/2023]
Abstract
Unlike its cytotoxicity in p53-functional cell lines, Nutlin-1, the small-molecule inhibitor of murine double minute (MDM2), significantly enhanced the differentiation-inducing activity of all-trans retinoic acid (ATRA) in HL60 and NB4 cells (p53-nonfunctional) but not in U937 cells (p53 wild-type). Moreover, we demonstrated that the synergistic differentiation-inducing activity of Nutlin-1 combined with ATRA appeared in a p53-independent manner. In the present study, we found that ATRA could selectively induce expression of p-glycoprotein (p-gp) in HL60 and NB4 cells but not in U937 cells. Investigation of p-gp-ATPase activity showed that Nutlin-1 and ATRA were likely to act as p-gp transport substrates. Furthermore, Nutlin-1 enhanced the ability of ATRA to induce expression of the myeloid differentiation-related transcription factor C/EBPβ and to reduce expression of c-myc. Additionally, the expression of retinoic acid receptor α (RARα) was further reduced in cells treated with ATRA in combination with Nutlin-1. Taken together, the mechanisms of synergistic differentiation-inducing activity of Nutlin-1 combined with ATRA could be attributed to Nutlin-1 competitive binding to p-gp, leading to ATRA efflux inhibition, and then the differentiation pathways involved were therefore further activated. Nutlin-1 might be a useful adjuvant with ATRA for patients with retinoid-resistant leukemia induced by overexpression of p-gp.
Collapse
MESH Headings
- ATP Binding Cassette Transporter, Subfamily B
- ATP Binding Cassette Transporter, Subfamily B, Member 1/antagonists & inhibitors
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Antineoplastic Combined Chemotherapy Protocols/pharmacology
- Binding, Competitive
- Biological Transport
- CCAAT-Enhancer-Binding Protein-beta/metabolism
- Cell Differentiation/drug effects
- Cell Proliferation/drug effects
- Dose-Response Relationship, Drug
- Drug Synergism
- HL-60 Cells
- Humans
- Imidazoles/metabolism
- Imidazoles/pharmacology
- Leukemia, Myeloid/genetics
- Leukemia, Myeloid/metabolism
- Leukemia, Myeloid/pathology
- Piperazines/metabolism
- Piperazines/pharmacology
- Proto-Oncogene Proteins c-mdm2/antagonists & inhibitors
- Proto-Oncogene Proteins c-mdm2/metabolism
- Proto-Oncogene Proteins c-myc/metabolism
- RNA Interference
- Receptors, Retinoic Acid/metabolism
- Retinoic Acid Receptor alpha
- Time Factors
- Transfection
- Tretinoin/metabolism
- Tretinoin/pharmacology
- Tumor Suppressor Protein p53/genetics
- Tumor Suppressor Protein p53/metabolism
- U937 Cells
- Verapamil/pharmacology
Collapse
Affiliation(s)
- Lei Zhang
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 388# Yuhangtang Rd., Hangzhou 310058, China
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Lahiry L, Saha B, Chakraborty J, Adhikary A, Mohanty S, Hossain DMS, Banerjee S, Das K, Sa G, Das T. Theaflavins target Fas/caspase-8 and Akt/pBad pathways to induce apoptosis in p53-mutated human breast cancer cells. Carcinogenesis 2009; 31:259-68. [DOI: 10.1093/carcin/bgp240] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
|
35
|
Van Maerken T, Ferdinande L, Taildeman J, Lambertz I, Yigit N, Vercruysse L, Rihani A, Michaelis M, Cinatl J, Cuvelier CA, Marine JC, De Paepe A, Bracke M, Speleman F, Vandesompele J. Antitumor activity of the selective MDM2 antagonist nutlin-3 against chemoresistant neuroblastoma with wild-type p53. J Natl Cancer Inst 2009; 101:1562-74. [PMID: 19903807 DOI: 10.1093/jnci/djp355] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Restoring p53 function by antagonizing its interaction with the negative regulator MDM2 is an appealing nongenotoxic approach to treating tumors with wild-type p53. Mutational inactivation of p53 is rare in neuroblastoma tumors at diagnosis and occurs in only a subset of multidrug-resistant neuroblastomas. METHODS The antiproliferative and cytotoxic effect of nutlin-3, a small-molecule MDM2 antagonist, was examined in chemosensitive (UKF-NB-3) and matched chemoresistant neuroblastoma cells with wild-type p53 (UKF-NB-3(r)DOX20) or with mutant p53 (UKF-NB-3(r)VCR10). Activation of the p53 pathway was assessed by expression analysis of p53 target genes, flow cytometric cell cycle analysis, and apoptosis assays. Mice with established chemoresistant tumor xenografts were treated orally with nutlin-3 or vehicle control (n = 5-10 mice per group) and were used to evaluate effects on tumor growth, p53 pathway activity, and metastatic tumor burden. All statistical tests were two-sided. RESULTS Nutlin-3 induced a similar activation of the p53 pathway in UKF-NB-3 and UKF-NB-3(r)DOX20 cells, as evidenced by increased expression of p53 target genes, G1 cell cycle arrest, and induction of apoptosis. No such response was observed in UKF-NB-3(r)VCR10 cells with mutant p53. Oral administration of nutlin-3 to UKF-NB-3(r)DOX20 xenograft-bearing mice led to inhibition of primary tumor growth (mean tumor volume after 3 weeks of treatment, nutlin-3- vs vehicle-treated mice: 772 vs 1661 mm3, difference = 890 mm3, 95% confidence interval = 469 to 1311 mm3, P < .001), p53 pathway activation, and reduction in the extent of metastatic disease. The growth of UKF-NB-3(r)VCR10 xenografts was unaffected by nutlin-3. CONCLUSIONS Nutlin-3 activates the p53 pathway and suppresses tumor growth in this model system of chemoresistant neuroblastoma, provided that wild-type p53 is present.
Collapse
Affiliation(s)
- Tom Van Maerken
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Abstract
Anaplastic large cell lymphoma (ALCL) is characterized by the presence of the t(2;5)(p23;q35) generating the nucleophosmin-anaplastic lymphoma kinase (NPM-ALK) fusion protein, a hyperactive kinase with transforming properties. Among these properties is the ability to regulate activity of the p53 tumor suppressor protein. In many human cancers, p53 is inactivated by mutation or other means, in some cases as a result of up-regulation of the negative regulator MDM2. However, the majority of ALK-expressing ALCL carry wild-type p53 and do not over express MDM2. We demonstrate a novel p53-dependent pathogenetic mechanism in ALK-expressing lymphoma. We confirm previously published reports of NPM-ALK-induced activation of the phosphoinositide (PI) 3-kinase and Jun N-terminal kinase (JNK) stress-activated protein (SAP) kinase proteins, but in this study demonstrate a role for these in the regulation of p53 activity in an intricate signaling system. Specifically, constitutive ALK signaling leads to the functional inactivation and/or degradation of p53 in JNK and MDM2 dependent manners. We also show nuclear exclusion of p53 in a PI 3-kinase-dependent manner. Furthermore, we demonstrate that reactivation of p53 in ALK-expressing cells as a result of pharmacologic inhibition of JNK, PI 3-kinase, and/or MDM2 activities results in the induction of apoptosis suggesting a novel therapeutic modality.
Collapse
|
37
|
Danilova N, Sakamoto KM, Lin S. Role of p53 family in birth defects: Lessons from zebrafish. ACTA ACUST UNITED AC 2008; 84:215-27. [DOI: 10.1002/bdrc.20129] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
38
|
Malabanan KP, Kanellakis P, Bobik A, Khachigian LM. Activation Transcription Factor-4 Induced by Fibroblast Growth Factor-2 Regulates Vascular Endothelial Growth Factor-A Transcription in Vascular Smooth Muscle Cells and Mediates Intimal Thickening in Rat Arteries Following Balloon Injury. Circ Res 2008; 103:378-87. [DOI: 10.1161/circresaha.107.168682] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Activation transcription factor (ATF)-4 is a member of the ATF/CREB family of basic leucine zipper transcription factors that regulates cellular responses to a variety of stresses. The role of ATF-4 in smooth muscle cells of the vessel wall is completely unknown. Here, we show that ATF-4 expression is induced in smooth muscle cells in response to injury, both in vitro using a model of mechanical injury and in the media of balloon-injured rat carotid arteries. We demonstrate that ATF-4 is activated by fibroblast growth factor (FGF)-2, an injury-induced mitogen, through the phosphatidylinositol 3-kinase pathway. Injury also activates vascular endothelial growth factor (VEGF)-A, whose expression is stimulated by ATF-4 overexpression and exposure to FGF-2. FGF-2 induces ATF-4 binding to a recognition element located in the VEGF-A gene at +1767 bp and luciferase reporter gene expression dependent on this site. Moreover, ATF-4 knockdown with small interfering RNA or ATF-4 deficiency ameliorates FGF-2–inducible VEGF-A expression. Intraluminal delivery of ATF-4 small interfering RNA in rat carotid arteries blocks balloon injury–inducible ATF-4 and VEGF-A expression after 4 hours and intimal thickening after 14 days. These findings reveal, for the first time, the induction of ATF-4 by both vascular injury and FGF-2. ATF-4 serves as a conduit for the inducible expression of 1 growth factor by another during the process of intimal thickening.
Collapse
Affiliation(s)
- Kristine P. Malabanan
- From the Centre for Vascular Research (K.P.M., L.M.K.), School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney; and Baker Heart Research Institute (P.K., A.B.), Melbourne, Australia
| | - Peter Kanellakis
- From the Centre for Vascular Research (K.P.M., L.M.K.), School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney; and Baker Heart Research Institute (P.K., A.B.), Melbourne, Australia
| | - Alexander Bobik
- From the Centre for Vascular Research (K.P.M., L.M.K.), School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney; and Baker Heart Research Institute (P.K., A.B.), Melbourne, Australia
| | - Levon M. Khachigian
- From the Centre for Vascular Research (K.P.M., L.M.K.), School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney; and Baker Heart Research Institute (P.K., A.B.), Melbourne, Australia
| |
Collapse
|