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Yang F, He Y, Ge N, Guo J, Yang F, Sun S. Exploring KRAS-mutant pancreatic ductal adenocarcinoma: a model validation study. Front Immunol 2024; 14:1203459. [PMID: 38268915 PMCID: PMC10805828 DOI: 10.3389/fimmu.2023.1203459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 12/22/2023] [Indexed: 01/26/2024] Open
Abstract
Introduction Pancreatic ductal adenocarcinoma (PDAC) has the highest mortality rate among all solid tumors. Tumorigenesis is promoted by the oncogene KRAS, and KRAS mutations are prevalent in patients with PDAC. Therefore, a comprehensive understanding of the interactions between KRAS mutations and PDAC may expediate the development of therapeutic strategies for reversing the progression of malignant tumors. Our study aims at establishing and validating a prediction model of KRAS mutations in patients with PDAC based on survival analysis and mRNA expression. Methods A total of 184 and 412 patients with PDAC from The Cancer Genome Atlas (TCGA) database and the International Cancer Genome Consortium (ICGC), respectively, were included in the study. Results After tumor mutation profile and copy number variation (CNV) analyses, we established and validated a prediction model of KRAS mutations, based on survival analysis and mRNA expression, that contained seven genes: CSTF2, FAF2, KIF20B, AKR1A1, APOM, KRT6C, and CD70. We confirmed that the model has a good predictive ability for the prognosis of overall survival (OS) in patients with KRAS-mutated PDAC. Then, we analyzed differential biological pathways, especially the ferroptosis pathway, through principal component analysis, pathway enrichment analysis, Gene Ontology (GO) enrichment analysis, and gene set enrichment analysis (GSEA), with which patients were classified into low- or high-risk groups. Pathway enrichment results revealed enrichment in the cytokine-cytokine receptor interaction, metabolism of xenobiotics by cytochrome P450, and viral protein interaction with cytokine and cytokine receptor pathways. Most of the enriched pathways are metabolic pathways predominantly enriched by downregulated genes, suggesting numerous downregulated metabolic pathways in the high-risk group. Subsequent tumor immune infiltration analysis indicated that neutrophil infiltration, resting CD4 memory T cells, and resting natural killer (NK) cells correlated with the risk score. After verifying that the seven gene expression levels in different KRAS-mutated pancreatic cancer cell lines were similar to that in the model, we screened potential drugs related to the risk score. Discussion This study established, analyzed, and validated a model for predicting the prognosis of PDAC based on risk stratification according to KRAS mutations, and identified differential pathways and highly effective drugs.
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Affiliation(s)
- Fan Yang
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yanjie He
- Department of Surgery, New York University School of Medicine and NYU-Langone Medical Center, New York, NY, United States
| | - Nan Ge
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jintao Guo
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Fei Yang
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Siyu Sun
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, China
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Cammarota AL, Falco A, Basile A, Molino C, Chetta M, D’Angelo G, Marzullo L, De Marco M, Turco MC, Rosati A. Pancreatic Cancer-Secreted Proteins: Targeting Their Functions in Tumor Microenvironment. Cancers (Basel) 2023; 15:4825. [PMID: 37835519 PMCID: PMC10571538 DOI: 10.3390/cancers15194825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/25/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Pancreatic Ductal Adenocarcinoma (PDAC) is a ravaging disease with a poor prognosis, requiring a more detailed understanding of its biology to foster the development of effective therapies. The unsatisfactory results of treatments targeting cell proliferation and its related mechanisms suggest a shift in focus towards the inflammatory tumor microenvironment (TME). Here, we discuss the role of cancer-secreted proteins in the complex TME tumor-stroma crosstalk, shedding lights on druggable molecular targets for the development of innovative, safer and more efficient therapeutic strategies.
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Affiliation(s)
- Anna Lisa Cammarota
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.L.C.); (A.F.); (A.B.); (L.M.); (M.C.T.)
| | - Antonia Falco
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.L.C.); (A.F.); (A.B.); (L.M.); (M.C.T.)
| | - Anna Basile
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.L.C.); (A.F.); (A.B.); (L.M.); (M.C.T.)
| | - Carlo Molino
- General Surgery Unit, A.O.R.N. Cardarelli, 80131 Naples, Italy;
| | - Massimiliano Chetta
- Medical and Laboratory Genetics Unit, A.O.R.N., Cardarelli, 80131 Naples, Italy;
| | - Gianni D’Angelo
- Department of Computer Science, University of Salerno, 84084 Fisciano, Italy;
| | - Liberato Marzullo
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.L.C.); (A.F.); (A.B.); (L.M.); (M.C.T.)
- FIBROSYS s.r.l., University of Salerno, 84081 Baronissi, Italy
| | - Margot De Marco
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.L.C.); (A.F.); (A.B.); (L.M.); (M.C.T.)
- FIBROSYS s.r.l., University of Salerno, 84081 Baronissi, Italy
| | - Maria Caterina Turco
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.L.C.); (A.F.); (A.B.); (L.M.); (M.C.T.)
- FIBROSYS s.r.l., University of Salerno, 84081 Baronissi, Italy
| | - Alessandra Rosati
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.L.C.); (A.F.); (A.B.); (L.M.); (M.C.T.)
- FIBROSYS s.r.l., University of Salerno, 84081 Baronissi, Italy
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Magyar CTJ, Vashist YK, Stroka D, Kim-Fuchs C, Berger MD, Banz VM. Heat shock protein 90 (HSP90) inhibitors in gastrointestinal cancer: where do we currently stand?-A systematic review. J Cancer Res Clin Oncol 2023; 149:8039-8050. [PMID: 36966394 PMCID: PMC10374781 DOI: 10.1007/s00432-023-04689-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 03/09/2023] [Indexed: 03/27/2023]
Abstract
PURPOSE Dysregulated expression of heat shock proteins (HSP) plays a fundamental role in tumor development and progression. Consequently, HSP90 may be an effective tumor target in oncology, including the treatment of gastrointestinal cancers. METHODS We carried out a systematic review of data extracted from clinicaltrials.gov and pubmed.gov, which included all studies available until January 1st, 2022. The published data was evaluated using primary and secondary endpoints, particularly with focus on overall survival, progression-free survival, and rate of stable disease. RESULTS Twenty trials used HSP90 inhibitors in GI cancers, ranging from phase I to III clinical trials. Most studies assessed HSP90 inhibitors as a second line treatment. Seventeen of the 20 studies were performed prior to 2015 and only few studies have results pending. Several studies were terminated prematurely, due to insufficient efficacy or toxicity. Thus far, the data suggests that HSP90 inhibitor NVP-AUY922 might improve outcome for colorectal cancer and gastrointestinal stromal tumors. CONCLUSION It currently remains unclear which subgroup of patients might benefit from HSP90 inhibitors and at what time point these inhibitors may be beneficial. There are only few new or ongoing studies initiated during the last decade.
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Affiliation(s)
- Christian Tibor Josef Magyar
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
| | | | - Deborah Stroka
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
| | - Corina Kim-Fuchs
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
| | - Martin D. Berger
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
| | - Vanessa M. Banz
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
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Youssef ME, Cavalu S, Hasan AM, Yahya G, Abd-Eldayem MA, Saber S. Role of Ganetespib, an HSP90 Inhibitor, in Cancer Therapy: From Molecular Mechanisms to Clinical Practice. Int J Mol Sci 2023; 24. [PMID: 36902446 DOI: 10.3390/ijms24055014] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Heat-shock proteins are upregulated in cancer and protect several client proteins from degradation. Therefore, they contribute to tumorigenesis and cancer metastasis by reducing apoptosis and enhancing cell survival and proliferation. These client proteins include the estrogen receptor (ER), epidermal growth factor receptor (EGFR), insulin-like growth factor-1 receptor (IGF-1R), human epidermal growth factor receptor 2 (HER-2), and cytokine receptors. The diminution of the degradation of these client proteins activates different signaling pathways, such as the PI3K/Akt/NF-κB, Raf/MEK/ERK, and JAK/STAT3 pathways. These pathways contribute to hallmarks of cancer, such as self-sufficiency in growth signaling, an insensitivity to anti-growth signals, the evasion of apoptosis, persistent angiogenesis, tissue invasion and metastasis, and an unbounded capacity for replication. However, the inhibition of HSP90 activity by ganetespib is believed to be a promising strategy in the treatment of cancer because of its low adverse effects compared to other HSP90 inhibitors. Ganetespib is a potential cancer therapy that has shown promise in preclinical tests against various cancers, including lung cancer, prostate cancer, and leukemia. It has also shown strong activity toward breast cancer, non-small cell lung cancer, gastric cancer, and acute myeloid leukemia. Ganetespib has been found to cause apoptosis and growth arrest in these cancer cells, and it is being tested in phase II clinical trials as a first-line therapy for metastatic breast cancer. In this review, we will highlight the mechanism of action of ganetespib and its role in treating cancer based on recent studies.
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Dayyani F, Macarulla T, Johnson A, Wainberg ZA. Second-line treatment options for patients with metastatic pancreatic ductal adenocarcinoma: A systematic literature review. Cancer Treat Rev 2023; 113:102502. [PMID: 36641880 DOI: 10.1016/j.ctrv.2022.102502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/22/2022] [Accepted: 12/27/2022] [Indexed: 12/30/2022]
Abstract
INTRODUCTION The aim of this review was to characterize the second- and later-line (≥2L) treatment landscape for patients with metastatic pancreatic ductal adenocarcinoma (mPDAC). METHODS This systematic literature review (PROSPERO: CRD42021279753) involved searches of MEDLINE® and Embase to identify results from prospective studies of ≥2L treatment options for metastatic pancreatic cancer published from 2016 to 2021. Publications were screened according to predetermined eligibility criteria; population-level data were extracted using standardized data fields. Publication quality was assessed according to Grading of Recommendations Assessment, Development and Evaluation (GRADE). The data were analyzed descriptively, grouped by drug class. RESULTS Sixty publications were identified, including 23 relating to comparative trials. GRADE assessment found that, of these 23 trials, 83% reported high or moderate-quality evidence. Of the publications relating to comparative trials, nine (three trials) reported favorable results: the pivotal phase 3 NAPOLI-1 trial for liposomal irinotecan; a phase 3 trial of non-liposomal irinotecan within the FOLFIRINOX regimen; and a phase 2 trial of eryaspase plus chemotherapy. CONCLUSIONS The level of unmet need for ≥2L treatment options for mPDAC remains high. Irinotecan-based regimens currently offer the greatest promise. Investigations into paradigm-changing agents and combination approaches continue.
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Affiliation(s)
| | - Teresa Macarulla
- Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
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Noel MS, Kim S, Hartley ML, Wong S, Picozzi V, Staszewski H, Kim DW, Van Tornout JM, Philip PA, Chung V, Ocean AJ, Wang‐Gillam A. A randomized phase II study of SM-88 plus methoxsalen, phenytoin, and sirolimus in patients with metastatic pancreatic cancer treated in the second line and beyond. Cancer Med 2022; 11:4169-4181. [PMID: 35499204 PMCID: PMC9678093 DOI: 10.1002/cam4.4768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/11/2022] [Accepted: 04/10/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND This trial explores SM-88 used with methoxsalen, phenytoin, and sirolimus (MPS) in pretreated metastatic pancreatic ductal adenocarcinoma (mPDAC) METHODS: Forty-nine patients were randomized to daily 460 or 920 mg oral SM-88 with MPS (SM-88 Regimen). The primary endpoint was objective response rate (RECIST 1.1). RESULTS Thirty-seven patients completed ≥ one cycle of SM-88 Regimen (response evaluable population). Disease control rate (DCR), overall survival (OS), and progression-free survival (PFS) did not differ significantly between dose levels. Stable disease was achieved in 9/37 patients (DCR, 24.3%); there were no complete or partial responses. Quality-of-life (QOL) was maintained and trended in favor of 920 mg. SM-88 Regimen was well tolerated; a single patient (1/49) had related grade 3 and 4 adverse events, which later resolved. In the intention-to-treat population of 49 patients, the median overall survival (mOS) was 3.4 months (95% CI: 2.7-4.9 months). Those treated in the second line had an mOS of 8.1 months and a median PFS of 3.8 months. Survival was higher for patients with stable versus progressive disease (any line; mOS: 10.6 months vs. 3.9 months; p = 0.01). CONCLUSIONS SM-88 Regimen has a favorable safety profile with encouraging QOL effects, disease control, and survival trends. This regimen should be explored in the second-line treatment of patients with mPDAC. CLINICALTRIALS gov Identifier: NCT03512756.
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Affiliation(s)
- Marcus S. Noel
- Georgetown Lombardi Comprehensive Cancer CenterWashingtonDistrict of ColumbiaUSA
| | - Semmie Kim
- TYME Technologies Inc.BedminsterNew JerseyUSA
| | - Marion L. Hartley
- The Ruesch Center for the Cure of Gastrointestinal CancersWashingtonDistrict of ColumbiaUSA
| | - Steve Wong
- Sarcoma Oncology Research CenterSanta MonicaCaliforniaUSA
| | | | | | - Dae Won Kim
- The University of Texas MD Anderson Cancer CenterHoustonTexasUSA
| | | | - Philip Agop Philip
- Karmanos Cancer CenterWayne State UniversityMichiganDetroitUSA
- SWOGFarmington HillsMichiganUSA
| | | | - Allyson J. Ocean
- Weill Cornell MedicineNew York‐Presbyterian HospitalNew YorkNew YorkUSA
| | - Andrea Wang‐Gillam
- Washington University School of Medicine in St. LouisSt. LouisMissouriUSA
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Deycmar S, Mara E, Kerschbaum-Gruber S, Waller V, Georg D, Pruschy M. Ganetespib selectively sensitizes cancer cells for proximal and distal spread-out Bragg peak proton irradiation. Radiat Oncol 2022; 17:72. [PMID: 35410422 PMCID: PMC8996402 DOI: 10.1186/s13014-022-02036-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 03/20/2022] [Indexed: 02/03/2023] Open
Abstract
Objective Hypersensitivity towards proton versus photon irradiation was demonstrated in homologous recombination repair (HRR)-deficient cell lines. Hence, combined treatment concepts targeting HRR provide a rational for potential pharmaceutical exploitation. The HSP90 inhibitor ganetespib (STA-9090) downregulates a multitude of HRR-associated proteins and sensitizes for certain chemotherapeutics. Thus, the radiosensitizing effect of HSP90-inhibiting ganetespib was investigated for reference photon irradiation and proton irradiation at a proximal and distal position in a spread-out Bragg peak (SOBP). Methods A549 and FaDu cells were treated with low-dose (2 nM resp. 1 nM) ganetespib and irradiated with 200 kV photons. Proton irradiation was performed at a proximal and a distal position within a SOBP, with corresponding dose-averaged linear-energy transfer (LETD) values of 2.1 and 4.5 keV/µm, respectively. Cellular survival data was fitted to the linear-quadratic model to calculate relative biological effectiveness (RBE) and the dose-modifying factor (DMF). Additionally, A549 cells were treated with increasing doses of ganetespib and investigated by flow cytometry, immunoblotting, and immunofluorescence microscopy to investigate cell cycle distribution, Rad51 protein levels, and γH2AX foci, respectively. Results Low-dosed ganetespib significantly sensitized both cancer cell lines exclusively for proton irradiation at both investigated LETD, resulting in increased RBE values of 10–40%. In comparison to photon irradiation, the fraction of cells in S/G2/M phase was elevated in response to proton irradiation with 10 nM ganetespib consistently reducing this population. No changes in cell cycle distribution were detected in unirradiated cells by ganetespib alone. Protein levels of Rad51 are downregulated in irradiated A549 cells by 10 nM and also 2 nM ganetespib within 24 h. Immunofluorescence staining demonstrated similar induction and removal of γH2AX foci, irrespective of irradiation type or ganetespib administration. Conclusion Our findings illustrate a proton-specific sensitizing effect of low-dosed ganetespib in both employed cell lines and at both investigated SOBP positions. We provide additional experimental data on cellular response and a rational for future combinatorial approaches with proton radiotherapy. Supplementary Information The online version contains supplementary material available at 10.1186/s13014-022-02036-z.
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Huang Y, Wang T, Tan Q, He D, Wu M, Fan J, Yang J, Zhong C, Li K, Zhang J. Smart Stimuli-Responsive and Mitochondria Targeting Delivery in Cancer Therapy. Int J Nanomedicine 2021; 16:4117-4146. [PMID: 34163163 PMCID: PMC8214531 DOI: 10.2147/ijn.s315368] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 05/22/2021] [Indexed: 01/02/2023] Open
Abstract
Dysfunction in the mitochondria (Mc) contributes to tumor progression. It is a major challenge to deliver therapeutic agents specifically to the Mc for precise treatment. Smart drug delivery systems are based on stimuli-responsiveness and active targeting. Here, we give a whole list of documented pathways to achieve smart stimuli-responsive (St-) and Mc-targeted DDSs (St-Mc-DDSs) by combining St and Mc targeting strategies. We present the formulations, targeting characteristics of St-Mc-DDSs and clarify their anti-cancer mechanisms as well as improvement in efficacy and safety. St-Mc-DDSs usually not only have Mc-targeting groups, molecules (lipophilic cations, peptides, and aptamers) or materials but also sense the surrounding environment and correspondingly respond to internal biostimulators such as pH, redox changes, enzyme and glucose, and/or externally applied triggers such as light, magnet, temperature and ultrasound. St-Mc-DDSs exquisitely control the action site, increase therapeutic efficacy and decrease side effects of the drug. We summarize the clinical research progress and propose suggestions for follow-up research. St-Mc-DDSs may be an innovative and sensitive precision medicine for cancer treatment.
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Affiliation(s)
- Yongjia Huang
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing, People's Republic of China
| | - Tingting Wang
- Biochemistry and Molecular Biology Laboratory, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, People's Republic of China
| | - Qunyou Tan
- Department of Thoracic Surgery, Daping Hospital of Army Medical University, PLA, Chongqing, People's Republic of China
| | - Dan He
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing, People's Republic of China
| | - Mingjun Wu
- Institute of Life Science, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jingchuan Fan
- Institute of Life Science, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jie Yang
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing, People's Republic of China
| | - Cailing Zhong
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing, People's Republic of China
| | - Kailing Li
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jingqing Zhang
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing, People's Republic of China
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Al-Share B, Hammad N, Diab M. Pancreatic adenocarcinoma: molecular drivers and the role of targeted therapy. Cancer Metastasis Rev 2021; 40:355-371. [PMID: 33398620 DOI: 10.1007/s10555-020-09948-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/15/2020] [Indexed: 01/05/2023]
Abstract
Prognosis from pancreatic ductal adenocarcinoma (PDAC) continues to be poor despite the many efforts channeled to improve its management. Although the mainstay treatment is still traditional chemotherapy, recent advances highlighted a promising potential for targeted therapy in the management of this disease. Those advances emphasize the significance of timely genomic profiling of tumor tissue as well as germline testing of patients to identify potential markers of targeted therapy. While targeted therapy is reserved for a relatively small subset of patients with PDAC, ongoing research is uncovering additional markers, and targeted agents, that will hopefully translate to better outcomes for patients.
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Affiliation(s)
- Bayan Al-Share
- Department of Oncology, Wayne State University, Karmanos Cancer Institute, Detroit, MI, USA
| | - Nour Hammad
- Department of Oncology, Ascension Providence Hospital and Medical Center/Michigan State University/Collage of Human Medicine, Southfield, MI, USA
| | - Maria Diab
- Department of Oncology, Emory University, Atlanta, GA, USA.
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Abstract
INTRODUCTION Heat shock protein 90 (Hsp90) is one of the most critical chaperones amenable to mediating the folding and maturation of more than 300 client proteins. In normal cells, Hsp90 chaperone cycle is required for regulating multiple cellular processes to maintain homeostasis. However, extremely overexpressed Hsp90 in neoplastic cells results in the dysregulation of client proteins, many of which are indispensable to the accumulation of cancer hallmarks, such as infinite proliferation and increased invasiveness. Consequently, modulation of Hsp90 activity has been considered as a potential strategy for cancer treatment. AREAS COVERED This review recapitulated recent patents' progress in the development of Hsp90 inhibitors with potent antitumor activities during 2013 to present. Besides, the structural-activity relationships of the patented inhibitors and their structural similarity were also discussed. EXPERT OPINION Hsp90, as an anticancer target, has been investigated for several decades. The first generation of Hsp90 inhibitors exhibited potent antitumor activities in preclinical trials but were trapped in different phases of clinical trials. The second generation of Hsp90 inhibitors has been identified with increased specificity and security through structure modification. Moreover, these inhibitors may offer opportunities for studies of Hsp90 chaperone and development of Hsp90 inhibition therapy.
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Affiliation(s)
- Li Li
- State Key Laboratory of Natural Medicines, and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University , Nanjing, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University , Nanjing, China
| | - Nan-Nan Chen
- State Key Laboratory of Natural Medicines, and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University , Nanjing, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University , Nanjing, China
| | - Qi-Dong You
- State Key Laboratory of Natural Medicines, and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University , Nanjing, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University , Nanjing, China
| | - Xiao-Li Xu
- State Key Laboratory of Natural Medicines, and Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University , Nanjing, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University , Nanjing, China
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Nagaraju GP, Zakka KM, Landry JC, Shaib WL, Lesinski GB, El-Rayes BF. Inhibition of HSP90 overcomes resistance to chemotherapy and radiotherapy in pancreatic cancer. Int J Cancer 2019; 145:1529-1537. [PMID: 30801702 DOI: 10.1002/ijc.32227] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/25/2019] [Accepted: 02/07/2019] [Indexed: 12/11/2022]
Abstract
Resistance of pancreatic ductal adenocarcinoma (PDAC) to radiotherapy and chemotherapy represents a significant clinical issue. Although the mechanisms of resistance are multi-faceted, client proteins of heat shock protein 90 (HSP90) such as hypoxia induced factor-1α (HIF-1α) have a central role in this process. The purpose of this investigation was to evaluate inhibition of HSP90 as a therapeutic strategy for radiosensitization in pancreatic cancer. Ganetespib, a selective inhibitor of HSP90, was evaluated as a radio-sensitizer in setting of PDAC. Inhibition of HSP90 by ganetespib potentiated the ability of radiation therapy to limit cell proliferation and colony formation in vitro. HIF-1α expression was upregulated by irradiation and HIF-1α-overexpressing stable cell lines were resistant to radiation. Inhibition of HSP90 with ganetespib reversed the effects of HIF-1α overexpression, by reducing signaling via proliferative, angiogenic and anti-apoptotic pathways. The potentiation of the antitumor effects of chemoradiotherapy by ganetespib and modulation of key pathways (e.g. HIF-1α, STAT3, and AKT) was confirmed in vivo in nude mice bearing HPAC xenograft tumors. These novel data highlight HIF-1α-mediated mechanisms of HSP90 inhibition that sensitize PDAC cells to chemoradiotherapy. This pathway and its pleiotropic effects warrant further evaluation in concert with conventional therapy in pancreatic cancer clinical trials.
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Affiliation(s)
| | - Katerina M Zakka
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Jerome C Landry
- Department of Radiation Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Walid L Shaib
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Gregory B Lesinski
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Bassel F El-Rayes
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
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Lakshmana G, Baniahmad A. Interference with the androgen receptor protein stability in therapy-resistant prostate cancer. Int J Cancer 2018; 144:1775-1779. [PMID: 30125354 DOI: 10.1002/ijc.31818] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 07/25/2018] [Indexed: 01/22/2023]
Abstract
The androgen receptor (AR) plays a central role in the pathogenesis of prostate cancer (PCa). Most PCa cases develop eventually from an androgen-dependent stage to castration-resistant prostate cancer (CRPC) with AR-signaling still being active. Thus, inhibition of AR remains a well-established promising drug target in CRPC. However, despite the improvements of current treatment for CRPC by targeting the AR, the evolution of adaptive AR-signaling leads to therapy-resistant CRPC. Treatment failure is based mostly on the inability to keep AR under long-term restraint due to adaptive responses of AR-signaling. One underlying mechanism appears to be the increased AR protein stability. Therefore, the regulation of AR protein stability and its degradation is another interesting path that could enhance our knowledge of carcinogenesis and tumor evolution possibly leading to novel therapeutic targets. In this review, we discuss various molecular mechanisms and factors that stabilize AR protein levels directly or indirectly. We summarize novel approaches to interfere with AR stability including targeting the glucocorticoid receptor (GR), heat shock proteins, and co-chaperones as well as E3-ligases using small chimeric molecules. These novel approaches in combination with antiandrogen treatment inhibit PCa growth through the regulation of AR protein levels.
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Affiliation(s)
| | - Aria Baniahmad
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
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Schcolnik-Cabrera A, Chávez-Blanco A, Domínguez-Gómez G, Taja-Chayeb L, Morales-Barcenas R, Trejo-Becerril C, Perez-Cardenas E, Gonzalez-Fierro A, Dueñas-González A. Orlistat as a FASN inhibitor and multitargeted agent for cancer therapy. Expert Opin Investig Drugs 2018; 27:475-489. [PMID: 29723075 DOI: 10.1080/13543784.2018.1471132] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Cancer cells have increased glycolysis and glutaminolysis. Their third feature is increased de novo lipogenesis. As such, fatty acid (FA) synthesis enzymes are over-expressed in cancer and their depletion causes antitumor effects. As fatty acid synthase (FASN) plays a pivotal role in this process, it is an attractive target for cancer therapy. AREAS COVERED This is a review of the lipogenic phenotype of cancer and how this phenomenon can be exploited for cancer therapy using inhibitors of FASN, with particular emphasis on orlistat as a repurposing drug. EXPERT OPINION Disease stabilization only has been observed with a highly selective FASN inhibitor used as a single agent in clinical trials. It is too early to say whether the absence of tumor responses other than stabilization results because even full inhibition of FASN is not enough to elicit antitumor responses. The FASN inhibitor orlistat is a 'dirty' drug with target-off actions upon at least seven targets with a proven role in tumor biology. The development of orlistat formulations suited for its intravenous administration is a step ahead to shed light on the concept that drug promiscuity can or not be a virtue.
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Affiliation(s)
| | - Alma Chávez-Blanco
- a Division of Basic Research , Instituto Nacional de Cancerologia , Mexico City , Mexico
| | | | - Lucia Taja-Chayeb
- a Division of Basic Research , Instituto Nacional de Cancerologia , Mexico City , Mexico
| | - Rocio Morales-Barcenas
- a Division of Basic Research , Instituto Nacional de Cancerologia , Mexico City , Mexico
| | | | - Enrique Perez-Cardenas
- a Division of Basic Research , Instituto Nacional de Cancerologia , Mexico City , Mexico
| | - Aurora Gonzalez-Fierro
- a Division of Basic Research , Instituto Nacional de Cancerologia , Mexico City , Mexico
| | - Alfonso Dueñas-González
- b Unit of Biomedical Research in Cancer , Instituto de Investigaciones Biomedicas, UNAM/Instituto Nacional de Cancerologia , Mexico City , Mexico
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