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Kashani B, Zandi Z, Pourbagheri-Sigaroodi A, Yousefi AM, Ghaffari SH, Bashash D. The PI3K signaling pathway; from normal lymphopoiesis to lymphoid malignancies. Expert Rev Anticancer Ther 2024; 24:493-512. [PMID: 38690706 DOI: 10.1080/14737140.2024.2350629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 04/29/2024] [Indexed: 05/02/2024]
Abstract
INTRODUCTION As a vital mechanism of survival, lymphopoiesis requires the collaboration of different signaling molecules to orchestrate each step of cell development and maturation. The PI3K pathway is considerably involved in the maturation of lymphatic cells and therefore, its dysregulation can immensely affect human well-being and cause some of the most prevalent malignancies. As a result, studies that investigate this pathway could pave the way for a better understanding of the lymphopoiesis mechanisms, the undesired changes that lead to cancer progression, and how to design drugs to solve this issue. AREAS COVERED The present review addresses the aforementioned aspects of the PI3K pathway and helps pave the way for future therapeutic approaches. In order to access the articles, databases such as Medicine Medline/PubMed, Scopus, Google Scholar, and Science Direct were utilized. The search formula was established by identifying main keywords including PI3K/Akt/mTOR pathway, Lymphopoiesis, Lymphoid malignancies, and inhibitors. EXPERT OPINION The PI3K pathway is crucial for lymphocyte development and differentiation, making it a potential target for therapeutic intervention in lymphoid cancers. Studies are focused on developing PI3K inhibitors to impede the progression of hematologic malignancies, highlighting the pathway's significance in lymphoma and lymphoid leukemia.
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Affiliation(s)
- Bahareh Kashani
- Hematology, Oncology and Stem Cell Transplantation Research Center, School of Medicine, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Zandi
- Hematology, Oncology and Stem Cell Transplantation Research Center, School of Medicine, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Atieh Pourbagheri-Sigaroodi
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir-Mohammad Yousefi
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed H Ghaffari
- Hematology, Oncology and Stem Cell Transplantation Research Center, School of Medicine, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Davood Bashash
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Mahtani T, Sheth H, Smith LK, Benedict L, Brecier A, Ghasemlou N, Treanor B. The ion channel TRPV5 regulates B-cell signaling and activation. Front Immunol 2024; 15:1386719. [PMID: 38694510 PMCID: PMC11061418 DOI: 10.3389/fimmu.2024.1386719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 03/28/2024] [Indexed: 05/04/2024] Open
Abstract
Introduction B-cell activation triggers the release of endoplasmic reticulum calcium stores through the store-operated calcium entry (SOCE) pathway resulting in calcium influx by calcium release-activated calcium (CRAC) channels on the plasma membrane. B-cell-specific murine knockouts of SOCE do not impact humoral immunity suggesting that alternative channels may be important. Methods We identified a member of the calcium-permeable transient receptor potential (TRP) ion channel family, TRPV5, as a candidate channel expressed in B cells by a quantitative polymerase chain reaction (qPCR) screen. To further investigate the role of TRPV5 in B-cell responses, we generated a murine TRPV5 knockout (KO) by CRISPR-Cas9. Results We found TRPV5 polarized to B-cell receptor (BCR) clusters upon stimulation in a PI3K-RhoA-dependent manner. TRPV5 KO mice have normal B-cell development and mature B-cell numbers. Surprisingly, calcium influx upon BCR stimulation in primary TRPV5 KO B cells was not impaired; however, differential expression of other calcium-regulating proteins, such as ORAI1, may contribute to a compensatory mechanism for calcium signaling in these cells. We demonstrate that TRPV5 KO B cells have impaired spreading and contraction in response to membrane-bound antigen. Consistent with this, TRPV5 KO B cells have reduced BCR signaling measured through phospho-tyrosine residues. Lastly, we also found that TRPV5 is important for early T-dependent antigen specific responses post-immunization. Discussion Thus, our findings identify a role for TRPV5 in BCR signaling and B-cell activation.
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Affiliation(s)
- Trisha Mahtani
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - Hena Sheth
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - L. K. Smith
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, Canada
| | - Leshawn Benedict
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, Canada
| | - Aurelie Brecier
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON, Canada
| | - Nader Ghasemlou
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON, Canada
| | - Bebhinn Treanor
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, Canada
- Department of Immunology, University of Toronto, Toronto, ON, Canada
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Lees J, Hay J, Moles MW, Michie AM. The discrete roles of individual FOXO transcription factor family members in B-cell malignancies. Front Immunol 2023; 14:1179101. [PMID: 37275916 PMCID: PMC10233034 DOI: 10.3389/fimmu.2023.1179101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/05/2023] [Indexed: 06/07/2023] Open
Abstract
Forkhead box (FOX) class O (FOXO) proteins are a dynamic family of transcription factors composed of four family members: FOXO1, FOXO3, FOXO4 and FOXO6. As context-dependent transcriptional activators and repressors, the FOXO family regulates diverse cellular processes including cell cycle arrest, apoptosis, metabolism, longevity and cell fate determination. A central pathway responsible for negative regulation of FOXO activity is the phosphatidylinositol-3-kinase (PI3K)-AKT signalling pathway, enabling cell survival and proliferation. FOXO family members can be further regulated by distinct kinases, both positively (e.g., JNK, AMPK) and negatively (e.g., ERK-MAPK, CDK2), with additional post-translational modifications further impacting on FOXO activity. Evidence has suggested that FOXOs behave as 'bona fide' tumour suppressors, through transcriptional programmes regulating several cellular behaviours including cell cycle arrest and apoptosis. However, an alternative paradigm has emerged which indicates that FOXOs operate as mediators of cellular homeostasis and/or resistance in both 'normal' and pathophysiological scenarios. Distinct FOXO family members fulfil discrete roles during normal B cell maturation and function, and it is now clear that FOXOs are aberrantly expressed and mutated in discrete B-cell malignancies. While active FOXO function is generally associated with disease suppression in chronic lymphocytic leukemia for example, FOXO expression is associated with disease progression in diffuse large B cell lymphoma, an observation also seen in other cancers. The opposing functions of the FOXO family drives the debate about the circumstances in which FOXOs favour or hinder disease progression, and whether targeting FOXO-mediated processes would be effective in the treatment of B-cell malignancies. Here, we discuss the disparate roles of FOXO family members in B lineage cells, the regulatory events that influence FOXO function focusing mainly on post-translational modifications, and consider the potential for future development of therapies that target FOXO activity.
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Affiliation(s)
| | | | | | - Alison M. Michie
- Paul O’Gorman Leukaemia Research Centre, School of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
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Sun K, Jin L, Karolová J, Vorwerk J, Hailfinger S, Opalka B, Zapukhlyak M, Lenz G, Khandanpour C. Combination Treatment Targeting mTOR and MAPK Pathways Has Synergistic Activity in Multiple Myeloma. Cancers (Basel) 2023; 15:cancers15082373. [PMID: 37190302 DOI: 10.3390/cancers15082373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 05/17/2023] Open
Abstract
Multiple myeloma (MM) is an incurable, malignant B cell disorder characterized by frequent relapses and a poor prognosis. Thus, new therapeutic approaches are warranted. The phosphatidylinositol-3-kinase (PI3K) pathway plays a key role in many critical cellular processes, including cell proliferation and survival. Activated PI3K/AKT (protein kinases B)/mTOR (mammalian target of rapamycin) signaling has been identified in MM primary patient samples and cell lines. In this study, the efficacy of PI3K and mTOR inhibitors in various MM cell lines representing three different prognostic subtypes was tested. Whereas MM cell lines were rather resistant to PI3K inhibition, treatment with the mTOR inhibitor temsirolimus decreases the phosphorylation of key molecules in the PI3K pathway in MM cell lines, leading to G0/G1 cell cycle arrest and thus reduced proliferation. Strikingly, the efficacy of temsirolimus was amplified by combining the treatment with the Mitogen-activated protein kinase kinase (MEK) inhibitor trametinib. Our findings provide a scientific rationale for the simultaneous inhibition of mTOR and MEK as a novel strategy for the treatment of MM.
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Affiliation(s)
- Kaiyan Sun
- Department of Medicine A, Hematology, Hemostaseology, Oncology and Pneumology, University Hospital Münster, 48149 Münster, Germany
| | - Ling Jin
- Department of Medicine A, Hematology, Hemostaseology, Oncology and Pneumology, University Hospital Münster, 48149 Münster, Germany
| | - Jana Karolová
- Department of Medicine A, Hematology, Hemostaseology, Oncology and Pneumology, University Hospital Münster, 48149 Münster, Germany
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, 12108 Prague, Czech Republic
| | - Jan Vorwerk
- Department of Medicine A, Hematology, Hemostaseology, Oncology and Pneumology, University Hospital Münster, 48149 Münster, Germany
| | - Stephan Hailfinger
- Department of Medicine A, Hematology, Hemostaseology, Oncology and Pneumology, University Hospital Münster, 48149 Münster, Germany
| | - Bertram Opalka
- Department of Hematology and Stem Cell Transplantation, West German Cancer Center (WTZ), University Hospital Essen, 45147 Essen, Germany
| | - Myroslav Zapukhlyak
- Department of Medicine A, Hematology, Hemostaseology, Oncology and Pneumology, University Hospital Münster, 48149 Münster, Germany
| | - Georg Lenz
- Department of Medicine A, Hematology, Hemostaseology, Oncology and Pneumology, University Hospital Münster, 48149 Münster, Germany
| | - Cyrus Khandanpour
- Department of Medicine A, Hematology, Hemostaseology, Oncology and Pneumology, University Hospital Münster, 48149 Münster, Germany
- Department of Hematology and Oncology, University Hospital Schleswig-Holstein and University of Lübeck, 23538 Lübeck, Germany
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Kikuchi H, Amofa E, Mcenery M, Schey SA, Ramasamy K, Farzaneh F, Calle Y. Inhibition of PI3K Class IA Kinases Using GDC-0941 Overcomes Cytoprotection of Multiple Myeloma Cells in the Osteoclastic Bone Marrow Microenvironment Enhancing the Efficacy of Current Clinical Therapeutics. Cancers (Basel) 2023; 15:462. [PMID: 36672411 PMCID: PMC9856454 DOI: 10.3390/cancers15020462] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/02/2023] [Accepted: 01/05/2023] [Indexed: 01/12/2023] Open
Abstract
Osteoclasts contribute to bone marrow (BM)-mediated drug resistance in multiple myeloma (MM) by providing cytoprotective cues. Additionally, 80% of patients develop osteolytic lesions, which is a major cause of morbidity in MM. Although targeting osteoclast function is critical to improve MM therapies, pre-clinical studies rarely consider overcoming osteoclast-mediated cytoprotection within the selection criteria of drug candidates. We have performed a drug screening and identified PI3K as a key regulator of a signalling node associated with resistance to dexamethasone lenalidomide, pomalidomide, and bortezomib mediated by osteoclasts and BM fibroblastic stromal cells, which was blocked by the pan-PI3K Class IA inhibitor GDC-0941. Additionally, GDC-0941 repressed the maturation of osteoclasts derived from MM patients and disrupted the organisation of the F-actin cytoskeleton in sealing zones required for bone degradation, correlating with decreased bone resorption by osteoclasts. In vivo, GDC-0941 improved the efficacy of dexamethasone against MM in the syngeneic GFP-5T33/C57-Rawji mouse model. Taken together, our results indicate that GDC-0941 in combination with currently used therapeutic agents could effectively kill MM cells in the presence of the cytoprotective BM microenvironment while inhibiting bone resorption by osteoclasts. These data support investigating GDC-0941 in combination with currently used therapeutic drugs for MM patients with active bone disease.
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Affiliation(s)
- Hugh Kikuchi
- Department of Haemato-Oncology, King’s College London, London SE5 9NU, UK
| | - Eunice Amofa
- Department of Haemato-Oncology, King’s College London, London SE5 9NU, UK
| | - Maeve Mcenery
- Department of Haemato-Oncology, King’s College London, London SE5 9NU, UK
| | - Steve Arthur Schey
- Department of Haemato-Oncology, King’s College London, London SE5 9NU, UK
- Department of Haematology, Guys Hospital, Guys and St. Thomas’ NHS Foundation Trust, London SE5 9RS, UK
| | - Karthik Ramasamy
- Royal Berkshire Hospital, Oxford University Hospitals, Oxford OX3 7LE, UK
| | - Farzin Farzaneh
- Department of Haemato-Oncology, King’s College London, London SE5 9NU, UK
| | - Yolanda Calle
- School of Life Sciences and Health, University of Roehampton, London SW15 4JD, UK
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PI3K/mTOR Dual Inhibitor Pictilisib Stably Binds to Site I of Human Serum Albumin as Observed by Computer Simulation, Multispectroscopic, and Microscopic Studies. Molecules 2022; 27:molecules27165071. [PMID: 36014303 PMCID: PMC9413508 DOI: 10.3390/molecules27165071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/02/2022] [Accepted: 08/06/2022] [Indexed: 11/17/2022] Open
Abstract
Pictilisib (GDC-0941) is a well-known dual inhibitor of class I PI3K and mTOR and is presently undergoing phase 2 clinical trials for cancer treatment. The present work investigated the dynamic behaviors and interaction mechanism between GDC-0941 and human serum albumin (HSA). Molecular docking and MD trajectory analyses revealed that GDC-0941 bound to HSA and that the binding site was positioned in subdomain IIA at Sudlow’s site I of HSA. The fluorescence intensity of HSA was strongly quenched by GDC-0941, and results showed that the HSA–GDC-0941 interaction was a static process caused by ground-state complex formation. The association constant of the HSA–GDC-0941 complex was approximately 105 M−1, reflecting moderate affinity. Thermodynamic analysis conclusions were identical with MD simulation results, which revealed that van der Waals interactions were the vital forces involved in the binding process. CD, synchronous, and 3D fluorescence spectroscopic results revealed that GDC-0941 induced the structural change in HSA. Moreover, the conformational change of HSA affected its molecular sizes, as evidenced by AFM. This work provides a useful research strategy for exploring the interaction of GDC-0941 with HSA, thus helping in the understanding of the transport and delivery of dual inhibitors in the blood circulation system.
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Heinemann L, Möllers KM, Ahmed HMM, Wei L, Sun K, Nimmagadda SC, Frank D, Baumann A, Poos AM, Dugas M, Varghese J, Raab MS, Khandanpour C. Inhibiting PI3K–AKT–mTOR Signaling in Multiple Myeloma-Associated Mesenchymal Stem Cells Impedes the Proliferation of Multiple Myeloma Cells. Front Oncol 2022; 12:874325. [PMID: 35795041 PMCID: PMC9251191 DOI: 10.3389/fonc.2022.874325] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/13/2022] [Indexed: 11/16/2022] Open
Abstract
The microenvironment of cancer cells is receiving increasing attention as an important factor influencing the progression and prognosis of tumor diseases. In multiple myeloma (MM), a hematological cancer of plasma cells, mesenchymal stem cells (MSCs) represent an integral part of the bone marrow niche and tumor microenvironment. It has been described that MM cells alter MSCs in a way that MM-associated MSCs promote the proliferation and survival of MM cells. Yet, our understanding of the molecular mechanisms governing the interaction between MM cells and MSCs and whether this can be targeted for therapeutic interventions is limited. To identify potential molecular targets, we examined MSCs by RNA sequencing and Western blot analysis. We report that MSCs from MM patients with active disease (MM-Act-MSCs) show a distinct gene expression profile as compared with MSCs from patients with other (non-) malignant diseases (CTR-MSCs). Of note, we detected a significant enrichment of the PI3K–AKT–mTOR hallmark gene set in MM-Act-MSCs and further confirmed the increased levels of related proteins in these MSCs. Pictilisib, a pan-PI3K inhibitor, selectively reduced the proliferation of MM-Act-MSCs as compared with CTR-MSCs. Furthermore, pictilisib treatment impaired the MM-promoting function of MM-Act-MSCs. Our data thus provide a deeper insight into the molecular signature and function of MSCs associated with MM and show that targeting PI3K–AKT–mTOR signaling in MSCs may represent an additional therapeutic pathway in the treatment of MM patients.
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Affiliation(s)
- Luca Heinemann
- Medical Department A, University Hospital Münster, Münster, Germany
| | | | | | - Lanying Wei
- Institute of Medical Informatics, University of Münster, Münster, Germany
| | - Kaiyan Sun
- Medical Department A, University Hospital Münster, Münster, Germany
| | | | - Daria Frank
- Medical Department A, University Hospital Münster, Münster, Germany
| | - Anja Baumann
- Clinical Cooperation Unit (CCU) Molecular Hematology/Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany
| | - Alexandra M. Poos
- Clinical Cooperation Unit (CCU) Molecular Hematology/Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany
| | - Martin Dugas
- Institute of Medical Informatics, Heidelberg University Hospital, Heidelberg, Germany
| | - Julian Varghese
- Institute of Medical Informatics, University of Münster, Münster, Germany
| | - Marc-Steffen Raab
- Clinical Cooperation Unit (CCU) Molecular Hematology/Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany
| | - Cyrus Khandanpour
- Medical Department A, University Hospital Münster, Münster, Germany
- Department of Haematology and Oncology, University Hospital of Schleswig-Holstein, Lübeck, Germany
- *Correspondence: Cyrus Khandanpour,
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Chen H, Cheng M, Gao P, Zhang X, Li G, Wang L, Qin L, Li H. GDC-0941 activates integrin linked kinase (ILK) expression to cause resistance to GDC-0941 in breast cancer by the tumor necrosis factor (TNF)-α signaling pathway. Bioengineered 2022; 13:10944-10955. [PMID: 35477364 PMCID: PMC9208486 DOI: 10.1080/21655979.2022.2066758] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Breast cancer is characterized by high morbidity and mortality. GDC-0941 is a PI3K inhibitor with oncogenic effects in breast cancer. However, certain breast cancer cells are insensitive to GDC-0941. Hence, the mechanism of GDC-0941 in breast cancer resistance was investigated in this study. Breast cancer cell lines BT-474, MCF7, Hs-578-T, MDA-MB-231, MDA-MB-453, and MDA-MB-468 were cultured in different medium and then treated with 100 or 500 nM GDC-0941, 100 nM OSU-T315, or TNF-α antibody. Moreover, ILK and shILK were transfected into cells. The half maximal inhibitory concentrations (IC50) for GDC-0941 were detected using CCK-8 assay. The levels of ILK, AKT, PDK1, S6, and p70S6K expression were detected using western blotting and qPCR. In addition, the mouse model of breast cancer was constructed to measure the tumor size, volume, and weight. The results showed that GDC-0941 decreased cell survival rate, downregulated the phosphorylation of AKT, S6, and p70S6K, and promoted the expression of ILK, while it had little effect on PDK1 expression. GDC-0941 inhibited the increases in p-AKT, p-S6, and p-p70S6K caused by ILK overexpression and promoted ILK knockdown-induced reduction of p-AKT, p-S6, and p-p70S6K. In addition, the combination of OSU-T315 and GDC-0941 decreased p-AKT, p-S6, and p-p70S6K level, tumor volume, and tumor weight. GDC-0941 promoted ILK expression by upregulating TNF-α level. Taken together, GDC-0941 increased ILK level by upregulating TNF-α, thus affecting AKT expression and the sensitivity of breast cancer cells to GDC-0941.
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Affiliation(s)
- Haifeng Chen
- Department of Thyroid and Breast Diseases, Jincheng People's Hospital, Jincheng, Shanxi, China
| | - Mingming Cheng
- Department of Thyroid and Breast Diseases, Jincheng People's Hospital, Jincheng, Shanxi, China
| | - Pengcheng Gao
- Department of Thyroid and Breast Diseases, Jincheng People's Hospital, Jincheng, Shanxi, China
| | - Xiangzhong Zhang
- Department of Thyroid and Breast Diseases, Jincheng People's Hospital, Jincheng, Shanxi, China
| | - Ganggang Li
- Department of Thyroid and Breast Diseases, Jincheng People's Hospital, Jincheng, Shanxi, China
| | - Liting Wang
- Department of Thyroid and Breast Diseases, Jincheng People's Hospital, Jincheng, Shanxi, China
| | - Long Qin
- Department of Thyroid and Breast Diseases, Jincheng People's Hospital, Jincheng, Shanxi, China
| | - Hongrui Li
- Department of Thyroid and Breast Diseases, Jincheng People's Hospital, Jincheng, Shanxi, China
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Mehdizadeh M, Farhadihosseinabadi B, Nikoonezhad M, Sankanian G, Soleimani M, Sayad A. Phosphatidylinositol 3-kinase signaling inhibitors for treatment of multiple myeloma: From small molecules to microRNAs. J Oncol Pharm Pract 2021; 28:149-158. [PMID: 34612744 DOI: 10.1177/10781552211035369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Multiple myeloma is one of the most hard-to-treat cancers among blood malignancies due to the high rate of drug resistance and relapse. The researchers are trying to find more effective drugs for treatment of the disease. Hence, the use of drugs targeting signaling pathways has become a powerful weapon. Overactivation of phosphatidylinositol 3-kinase signaling pathways is frequently observed in multiple myeloma cancer cells, which increases survival, proliferation, and even drug resistance in such cells. In recent years, drugs that inhibit the mediators involved in this biological pathway have shown promising results in the treatment of multiple myeloma. In the present study, we aimed to introduce phosphatidylinositol 3-kinase signaling inhibitors which include small molecules, herbal compounds, and microRNAs.
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Affiliation(s)
- Mahshid Mehdizadeh
- Hematopoietic Stem Cell Research Center, 556492Shahid Beheshti University of Medical Sciences, Iran
| | | | - Maryam Nikoonezhad
- Hematopoietic Stem Cell Research Center, 556492Shahid Beheshti University of Medical Sciences, Iran
| | - Ghazaleh Sankanian
- Hematopoietic Stem Cell Research Center, 556492Shahid Beheshti University of Medical Sciences, Iran
| | - Masoud Soleimani
- Hematopoietic Stem Cell Research Center, 556492Shahid Beheshti University of Medical Sciences, Iran
| | - Arezou Sayad
- Hematopoietic Stem Cell Research Center, 556492Shahid Beheshti University of Medical Sciences, Iran
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Seibold M, Stühmer T, Kremer N, Mottok A, Scholz CJ, Schlosser A, Leich E, Holzgrabe U, Brünnert D, Barrio S, Kortüm KM, Solimando AG, Chatterjee M, Einsele H, Rosenwald A, Bargou RC, Steinbrunn T. RAL GTPases mediate multiple myeloma cell survival and are activated independently of oncogenic RAS. Haematologica 2020; 105:2316-2326. [PMID: 33054056 PMCID: PMC7556628 DOI: 10.3324/haematol.2019.223024] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 10/10/2019] [Indexed: 11/17/2022] Open
Abstract
Oncogenic RAS provides crucial survival signaling for up to half of multiple myeloma cases, but has so far remained a clinically undruggable target. RAL is a member of the RAS superfamily of small GTPases and is considered to be a potential mediator of oncogenic RAS signaling. In primary multiple myeloma, we found RAL to be overexpressed in the vast majority of samples when compared with pre-malignant monoclonal gammopathy of undetermined significance or normal plasma cells. We analyzed the functional effects of RAL abrogation in myeloma cell lines and found that RAL is a critical mediator of survival. RNAi-mediated knockdown of RAL resulted in rapid induction of tumor cell death, an effect which was independent from signaling via mitogen-activated protein kinase, but appears to be partially dependent on Akt activity. Notably, RAL activation was not correlated with the presence of activating RAS mutations and remained unaffected by knockdown of oncogenic RAS. Furthermore, transcriptome analysis yielded distinct RNA expression signatures after knockdown of either RAS or RAL. Combining RAL depletion with clinically relevant anti-myeloma agents led to enhanced rates of cell death. Our data demonstrate that RAL promotes multiple myeloma cell survival independently of oncogenic RAS and, thus, this pathway represents a potential therapeutic target in its own right.
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Affiliation(s)
- Marcel Seibold
- Department of Medicine II, University Hospital of Würzburg, Würzburg, Germany
| | - Thorsten Stühmer
- Comprehensive Cancer Center Mainfranken, Chair of Translational Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Nadine Kremer
- Comprehensive Cancer Center Mainfranken, Chair of Translational Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Anja Mottok
- Institute of Human Genetics, University of Ulm, Ulm, Germany
| | | | - Andreas Schlosser
- Rudolf Virchow Center for Experimental Biomedicine, University of Würzburg, Würzburg, Germany
| | - Ellen Leich
- Institute of Pathology, University of Würzburg, Würzburg, Germany
| | - Ulrike Holzgrabe
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Würzburg, Germany
| | - Daniela Brünnert
- Comprehensive Cancer Center Mainfranken, Chair of Translational Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Santiago Barrio
- Hematology Department, Hospital 12 de Octubre, Complutense University, Madrid, Spain
| | - K. Martin Kortüm
- Department of Medicine II, University Hospital of Würzburg, Würzburg, Germany
| | | | - Manik Chatterjee
- Comprehensive Cancer Center Mainfranken, Chair of Translational Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Hermann Einsele
- Department of Medicine II, University Hospital of Würzburg, Würzburg, Germany
| | | | - Ralf C. Bargou
- Comprehensive Cancer Center Mainfranken, Chair of Translational Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Torsten Steinbrunn
- Department of Medicine II, University Hospital of Würzburg, Würzburg, Germany
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Vafaei S, Roudi R, Madjd Z, Aref AR, Ebrahimi M. Potential theranostics of circulating tumor cells and tumor-derived exosomes application in colorectal cancer. Cancer Cell Int 2020; 20:288. [PMID: 32655320 PMCID: PMC7339440 DOI: 10.1186/s12935-020-01389-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/27/2020] [Indexed: 02/07/2023] Open
Abstract
Background At the present time, colorectal cancer (CRC) is still known as a disease with a high mortality rate. Theranostics are flawless scenarios that link diagnosis with therapy, including precision medicine as a critical platform that relies on the development of biomarkers particularly “liquid biopsy”. Circulating tumor cells (CTCs) and tumor-derived exosomes (TDEs) in a liquid biopsy approach are of substantial importance in comparison with traditional ones, which cannot generally be performed to determine the dynamics of the tumor due to its wide restriction of range. Thus, recent attempts has shifted towards minimally noninvasive methods. Main text CTCs and TDEs, as significant signals emitted from the tumor microenvironment, which are also detectable in the blood, prove themselves to be promising novel biomarkers for cancer diagnosis, prognosis, and treatment response prediction. The therapeutic potential of them is still limited, and studies are at its infancy. One of the major challenges for the implementation of CTCs and TDEs which are new trends in translational medicine is the development of isolation and characterization; a standardizable approach. This review highlights and discusses the current challenges to find the bio fluids application in CRC early detection and clinical management. Conclusion Taken together, CTCs and TDEs as silent drivers of metastasis can serve in the management of cancer patient treatment and it is of the upmost importance to expand our insight into this subject. However, due to the limited data available from clinical trials, further validations are required before addressing their putative application in oncology.![]()
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Affiliation(s)
- Somayeh Vafaei
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Hemmat Street (Highway), Next to Milad Tower, Tehran, Iran.,Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.,Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Raheleh Roudi
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Hemmat Street (Highway), Next to Milad Tower, Tehran, Iran
| | - Zahra Madjd
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Hemmat Street (Highway), Next to Milad Tower, Tehran, Iran.,Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amir Reza Aref
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, USA
| | - Marzieh Ebrahimi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
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12
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Qu C, Zhu W, Dong K, Pan Z, Chen Y, Chen X, Liu X, Xu W, Lin H, Zheng Q, Li D. Inhibitory Effect of Hydroxysafflor Yellow B on the Proliferation of Human Breast Cancer MCF-7 Cells. Recent Pat Anticancer Drug Discov 2020; 14:187-197. [PMID: 31096897 DOI: 10.2174/1574891x14666190516102218] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 04/25/2019] [Accepted: 05/15/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND A recent patent has been issued for hydroxysafflor yellow A (HSYA) as a drug to prevent blood circulation disorders. Hydroxysafflor yellow B (HSYB), an isomer of HSYA with antioxidative effects, has been isolated from the florets of Carthamus tinctorius. The effects of HSYB on the proliferation of cancer cells and its mechanism of action have not been investigated. OBJECTIVE The aims of this study were to investigate the anti-cancer effects and the molecular mechanism of HSYB for breast cancer MCF-7 cells. METHODS MTT assays and colony formation assays were used to assess the survival and proliferation of MCF-7 cells, respectively. Hoechst 33258 and flow cytometry were used to measure cell apoptosis and flow cytometry to determine effects on the cell cycle. Western blots were used to measure protein levels. RESULTS Treatment with HSYB reduced survival and proliferation of human breast cancer MCF-7 cells in a dose-dependent manner. Furthermore, HSYB arrested the MCF-7 cell cycle at the S phase and downregulated cyclin D1, cyclin E, and CDK2. Compared with a control group, HSYB suppressed the protein levels of p-PI3K, PI3K, AKT, and p-AKT in MCF-7 cells. In addition, HSYB decreased the levels of Bcl- 2, increased the levels of Bax, cleaved caspase-3 and caspase-9, and subsequently induced MCF-7 cell apoptosis. CONCLUSION These data demonstrate that HSYB arrests the MCF-7 cell cycle at the S phase and induces cell apoptosis. Patent US20170246228 indicates that HSYB can be potentially used for the prevention and treatment of human breast cancer.
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Affiliation(s)
- Chuanjun Qu
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Weiwei Zhu
- Department of Pharmacy, Yantai Yuhuangding Hospital Affiliated to Qingdao University, 264000, Yantai, China
| | - Kaijie Dong
- Yantai Affiliated Hosptial of Binzhou Medical University, 264003, Yantai, China
| | - Zhaohai Pan
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Ying Chen
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Xiaoyu Chen
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Xiaona Liu
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Wenjuan Xu
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Haiyan Lin
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Qiusheng Zheng
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China.,Key Laboratory of Xinjiang Endemic Phytomedicine Resources of Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832002, Xinjiang, China
| | - Defang Li
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
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13
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Mues M, Karra L, Romero-Moya D, Wandler A, Hangauer MJ, Ksionda O, Thus Y, Lindenbergh M, Shannon K, McManus MT, Roose JP. High-Complexity shRNA Libraries and PI3 Kinase Inhibition in Cancer: High-Fidelity Synthetic Lethality Predictions. Cell Rep 2019; 27:631-647.e5. [PMID: 30970263 PMCID: PMC6690758 DOI: 10.1016/j.celrep.2019.03.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/11/2018] [Accepted: 03/13/2019] [Indexed: 12/24/2022] Open
Abstract
Deregulated signal transduction is a cancer hallmark, and its complexity and interconnectivity imply that combination therapy should be considered, but large data volumes that cover the complexity are required in user-friendly ways. Here, we present a searchable database resource of synthetic lethality with a PI3 kinase signal transduction inhibitor by performing a saturation screen with an ultra-complex shRNA library containing 30 independent shRNAs per gene target. We focus on Ras-PI3 kinase signaling with T cell leukemia as a screening platform for multiple clinical and experimental reasons. Our resource predicts multiple combination-based therapies with high fidelity, ten of which we confirmed with small molecule inhibitors. Included are biochemical assays, as well as the IPI145 (duvelisib) inhibitor. We uncover the mechanism of synergy between the PI3 kinase inhibitor GDC0941 (pictilisib) and the tubulin inhibitor vincristine and demonstrate broad synergy in 28 cell lines of 5 cancer types and efficacy in preclinical leukemia mouse trials.
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Affiliation(s)
- Marsilius Mues
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Laila Karra
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Damia Romero-Moya
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Anica Wandler
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Matthew J Hangauer
- Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Olga Ksionda
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Yvonne Thus
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Marthe Lindenbergh
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Kevin Shannon
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Michael T McManus
- Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jeroen P Roose
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA.
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14
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Cross Talk Networks of Mammalian Target of Rapamycin Signaling With the Ubiquitin Proteasome System and Their Clinical Implications in Multiple Myeloma. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2018; 343:219-297. [PMID: 30712673 DOI: 10.1016/bs.ircmb.2018.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Multiple myeloma (MM) is the second most common hematological malignancy and results from the clonal amplification of plasma cells. Despite recent advances in treatment, MM remains incurable with a median survival time of only 5-6years, thus necessitating further insights into MM biology and exploitation of novel therapeutic approaches. Both the ubiquitin proteasome system (UPS) and the PI3K/Akt/mTOR signaling pathways have been implicated in the pathogenesis, and treatment of MM and different lines of evidence suggest a close cross talk between these central cell-regulatory signaling networks. In this review, we outline the interplay between the UPS and mTOR pathways and discuss their implications for the pathophysiology and therapy of MM.
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15
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Ksionda O, Mues M, Wandler AM, Donker L, Tenhagen M, Jun J, Ducker GS, Matlawska-Wasowska K, Shannon K, Shokat KM, Roose JP. Comprehensive analysis of T cell leukemia signals reveals heterogeneity in the PI3 kinase-Akt pathway and limitations of PI3 kinase inhibitors as monotherapy. PLoS One 2018; 13:e0193849. [PMID: 29799846 PMCID: PMC5969748 DOI: 10.1371/journal.pone.0193849] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 02/19/2018] [Indexed: 11/22/2022] Open
Abstract
T cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematologic cancer. Poly-chemotherapy with cytotoxic and genotoxic drugs causes substantial toxicity and more specific therapies targeting the underlying molecular lesions are highly desired. Perturbed Ras signaling is prevalent in T-ALL and occurs via oncogenic RAS mutations or through overexpression of the Ras activator RasGRP1 in ~65% of T-ALL patients. Effective small molecule inhibitors for either target do not currently exist. Genetic and biochemical evidence link phosphoinositide 3-kinase (PI3K) signals to T-ALL, PI3Ks are activated by Ras-dependent and Ras-independent mechanisms, and potent PI3K inhibitors exist. Here we performed comprehensive analyses of PI3K-Akt signaling in T-ALL with a focus on class I PI3K. We developed a multiplex, multiparameter flow cytometry platform with pan- and isoform-specific PI3K inhibitors. We find that pan-PI3K and PI3K γ-specific inhibitors effectively block basal and cytokine-induced PI3K-Akt signals. Despite such inhibition, GDC0941 (pan-PI3K) or AS-605240 (PI3Kγ-specific) as single agents did not efficiently induce death in T-ALL cell lines. Combination of GDC0941 with AS-605240, maximally targeting all p110 isoforms, exhibited potent synergistic activity for clonal T-ALL lines in vitro, which motivated us to perform preclinical trials in mice. In contrast to clonal T-ALL lines, we used a T-ALL cancer model that recapitulates the multi-step pathogenesis and inter- and intra-tumoral genetic heterogeneity, a hallmark of advanced human cancers. We found that the combination of GDC0941 with AS-605240 fails in such trials. Our results reveal that PI3K inhibitors are a promising avenue for molecular therapy in T-ALL, but predict the requirement for methods that can resolve biochemical signals in heterogeneous cell populations so that combination therapy can be designed in a rational manner.
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Affiliation(s)
- Olga Ksionda
- Department of Anatomy, University of California San Francisco, San Francisco, California, United States of America
| | - Marsilius Mues
- Department of Anatomy, University of California San Francisco, San Francisco, California, United States of America
| | - Anica M Wandler
- Department of Pediatrics, University of California San Francisco, San Francisco, California, United States of America
| | - Lisa Donker
- Department of Anatomy, University of California San Francisco, San Francisco, California, United States of America
| | - Milou Tenhagen
- Department of Anatomy, University of California San Francisco, San Francisco, California, United States of America
| | - Jesse Jun
- Department of Anatomy, University of California San Francisco, San Francisco, California, United States of America
| | - Gregory S Ducker
- Department of Molecular Pharmacology, Howard Hughes Medical Institute, University of California San Francisco, San Francisco, California, United States of America
| | - Ksenia Matlawska-Wasowska
- Department of Pediatrics, Division of Hematology-Oncology, University of New Mexico, Health Sciences Center, Albuquerque, New Mexico, United States of America
| | - Kevin Shannon
- Department of Pediatrics, University of California San Francisco, San Francisco, California, United States of America
| | - Kevan M Shokat
- Department of Molecular Pharmacology, Howard Hughes Medical Institute, University of California San Francisco, San Francisco, California, United States of America
| | - Jeroen P Roose
- Department of Anatomy, University of California San Francisco, San Francisco, California, United States of America
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16
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Kinoshita S, Ri M, Kanamori T, Aoki S, Yoshida T, Narita T, Totani H, Ito A, Kusumoto S, Ishida T, Komatsu H, Iida S. Potent antitumor effect of combination therapy with sub-optimal doses of Akt inhibitors and pomalidomide plus dexamethasone in multiple myeloma. Oncol Lett 2018; 15:9450-9456. [PMID: 29928335 DOI: 10.3892/ol.2018.8501] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Accepted: 01/22/2018] [Indexed: 01/04/2023] Open
Abstract
Afuresertib (AFU), a novel inhibitor of the serine/threonine kinase AKT, has clinical efficacy as a monotherapy against hematological malignancies and is expected to be used in combination with standard therapies for multiple myeloma (MM). To develop a more effective and less toxic combination of immunomodulatory drugs (IMiDs) for therapy, the antitumor effect of sub-optimal doses of AFU, pomalidomide plus dexamethasone (PD), and the AFU-PD combination on MM cells were examined in the present study. Two MM cell lines, XG-7 and U266, with low sensitivity to both PD and AFU monotherapies, were subjected to these combinations and analyzed. Although the cell lines showed a slight reduction in viability with the sub-optimal doses of each monotherapy, the combination of the treatments resulted in a reduction in cell viability and the progression of apoptosis. Co-treatment with sub-optimal doses of PD and AFU enhanced caspase activation and highly suppressed the expression of IKZF1 and IKZF3. In addition, this combination promoted the dephosphorylation and stabilization of 4EBP1, an inhibitor of eIF4E activation, which led to the impairment of eIF4E-mediated translational activity. Furthermore, AFU showed a sufficient inhibitory effect on the phosphorylation of FOXO1, a tumor suppressor, in monotherapy or in combination with PD, which may be attributable to the activation of FOXO1, the subsequent inhibition of tumor growth, and the induction of cell death. In conclusion, the combination therapy with sub-optimal doses of PD and AFU exhibited potent antitumor activity in MM cells and may provide a novel strategy for the treatment of patients who experienced intolerable toxicity or insufficient response during IMiD therapy.
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Affiliation(s)
- Shiori Kinoshita
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Masaki Ri
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Takashi Kanamori
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Sho Aoki
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Takashi Yoshida
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Tomoko Narita
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Haruhito Totani
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Asahi Ito
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Shigeru Kusumoto
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Takashi Ishida
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Hirokazu Komatsu
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Shinsuke Iida
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
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17
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Yin LL, Wen XM, Lai QH, Li J, Wang XW. Lenalidomide improvement of cisplatin antitumor efficacy on triple-negative breast cancer cells in vitro. Oncol Lett 2018; 15:6469-6474. [PMID: 29616116 DOI: 10.3892/ol.2018.8120] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 02/09/2018] [Indexed: 12/28/2022] Open
Abstract
Lenalidomide is an immunomodulatory drug and possesses anti-angiogenic and immunomodulatory activities against multiple myeloma. The present study assessed the in vitro effect of lenalidomide combined with cisplatin on MDA-MB-231, a triple-negative breast cancer (TNBC) cell line and explored the underlying molecular mechanism of this combination. Cell viability, apoptosis and the protein expression of phosphorylated (p) and total extracellular signal-regulated kinase (ERK), B-cell lymphoma-2 (Bcl-2), caspase-3, cleaved poly-adenosine diphosphate-ribose polymerase (cPARP), vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) were measured in MDA-MB-231 cells treated with different concentrations of lenalidomide, cisplatin and their combination using different biochemical assays. Lenalidomide demonstrated no significant effect on the cell viability of MDA-MB-231 cells, even at high concentrations, whereas lenalidomide in combination with cisplatin, significantly reduced cisplatin IC50 from 7.8 to 3.0 µM in MDA-MB-231 cells. In addition, lenalidomide and cisplatin in combination significantly induced cell apoptosis by 1.6- and 1.38-fold, respectively compared with lenalidomide and cisplatin alone (P<0.05). The expression levels of VEGF, bFGF and Bcl-2 proteins were significantly reduced (P<0.01), whereas caspase-3 and cleaved PARP expression were significantly increased in MDA-MB-231 cells treated with the combination compared to those treated with single agents (P<0.01). Lenalidomide treatment alone significantly reduced the p-ERK level compared with the control (P<0.05) and cisplatin treatment alone significantly increased it (P<0.01), however treatment with them in combination significantly reduced the p-ERK level in MDA-MB-231 cells compared with cisplatin treatment alone (P<0.05). In conclusion, the present study provides the basis for using lenalidomide in combination with cisplatin in TNBC therapy.
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Affiliation(s)
- Lin-Lin Yin
- Department of Oncology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China.,Department of Hematology and Oncology, The Fourth Hospital of Jinan, Jinan, Shandong 250031, P.R. China
| | - Xin-Mian Wen
- Department of Clinical Laboratory, The Fourth Hospital of Jinan, Jinan, Shandong 250031, P.R. China
| | - Qing-Hua Lai
- Department of Oncology, The Central Hospital of Jinan, Jinan, Shandong 250013, P.R. China
| | - Jing Li
- Department of Hematology and Oncology, The Fourth Hospital of Jinan, Jinan, Shandong 250031, P.R. China
| | - Xiu-Wen Wang
- Department of Oncology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
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18
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Abramson HN. Kinase inhibitors as potential agents in the treatment of multiple myeloma. Oncotarget 2018; 7:81926-81968. [PMID: 27655636 PMCID: PMC5348443 DOI: 10.18632/oncotarget.10745] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 06/30/2016] [Indexed: 12/13/2022] Open
Abstract
Recent years have witnessed a dramatic increase in the number of therapeutic options available for the treatment of multiple myeloma (MM) - from immunomodulating agents to proteasome inhibitors to histone deacetylase (HDAC) inhibitors and, most recently, monoclonal antibodies. Used in conjunction with autologous hematopoietic stem cell transplantation, these modalities have nearly doubled the disease's five-year survival rate over the last three decades to about 50%. In spite of these advances, MM still is considered incurable as resistance and relapse are common. While small molecule protein kinase inhibitors have made inroads in the therapy of a number of cancers, to date their application to MM has been less than successful. Focusing on MM, this review examines the roles played by a number of kinases in driving the malignant state and the rationale for target development in the design of a number of kinase inhibitors that have demonstrated anti-myeloma activity in both in vitro and in vivo xenograph models, as well as those that have entered clinical trials. Among the targets and their inhibitors examined are receptor and non-receptor tyrosine kinases, cell cycle control kinases, the PI3K/AKT/mTOR pathway kinases, protein kinase C, mitogen-activated protein kinase, glycogen synthase kinase, casein kinase, integrin-linked kinase, sphingosine kinase, and kinases involved in the unfolded protein response.
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Affiliation(s)
- Hanley N Abramson
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, MI, USA
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19
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De Smedt E, Maes K, Verhulst S, Lui H, Kassambara A, Maes A, Robert N, Heirman C, Cakana A, Hose D, Breckpot K, van Grunsven LA, De Veirman K, Menu E, Vanderkerken K, Moreaux J, De Bruyne E. Loss of RASSF4 Expression in Multiple Myeloma Promotes RAS-Driven Malignant Progression. Cancer Res 2017; 78:1155-1168. [DOI: 10.1158/0008-5472.can-17-1544] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 11/15/2017] [Accepted: 12/12/2017] [Indexed: 11/16/2022]
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20
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Ramakrishnan V, D'Souza A. Signaling Pathways and Emerging Therapies in Multiple Myeloma. Curr Hematol Malig Rep 2017; 11:156-64. [PMID: 26922744 DOI: 10.1007/s11899-016-0315-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Multiple myeloma (MM) is a devastating malignancy of antibody-producing plasma cells. In the absence of a single unifying genetic event contributing to disease manifestation, efforts have focused on understanding signaling events deregulated in myeloma plasma cells. MM cells are dependent on both cellular and non-cellular components of the tumor microenvironment such as bone marrow stromal cells, endothelial cells, and cytokines such as interleukin 6 (IL6), vascular endothelial growth factor (VEGF), and insulin-like growth factor (IGF) for their growth and survival. The cumulative effect of such interactions is the aberrant activation of numerous signal transduction pathways within the MM plasma cells leading to uncontrolled growth and prevention of apoptosis. Here, we will review our current understanding of some of the key signal transduction pathways dysregulated in MM and emerging therapies targeting these pathways in MM.
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Affiliation(s)
- Vijay Ramakrishnan
- Division of Hematology, Mayo Clinic, 200, First Street SW, Rochester, MN, 55905, USA.
| | - Anita D'Souza
- Medical College of Wisconsin Milwaukee, Milwaukee, WI, 53226, USA.
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21
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Patel L, Chandrasekhar J, Evarts J, Forseth K, Haran AC, Ip C, Kashishian A, Kim M, Koditek D, Koppenol S, Lad L, Lepist EI, McGrath ME, Perreault S, Puri KD, Villaseñor AG, Somoza JR, Steiner BH, Therrien J, Treiberg J, Phillips G. Discovery of Orally Efficacious Phosphoinositide 3-Kinase δ Inhibitors with Improved Metabolic Stability. J Med Chem 2016; 59:9228-9242. [DOI: 10.1021/acs.jmedchem.6b01169] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Leena Patel
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | | | - Jerry Evarts
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Kristen Forseth
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Aaron C. Haran
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Carmen Ip
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Adam Kashishian
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Musong Kim
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - David Koditek
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Sandy Koppenol
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Latesh Lad
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Eve-Irene Lepist
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Mary E. McGrath
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Stephane Perreault
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Kamal D. Puri
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Armando G. Villaseñor
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - John R. Somoza
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Bart H. Steiner
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Joseph Therrien
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Jennifer Treiberg
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Gary Phillips
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
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22
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Ross RL, McPherson HR, Kettlewell L, Shnyder SD, Hurst CD, Alder O, Knowles MA. PIK3CA dependence and sensitivity to therapeutic targeting in urothelial carcinoma. BMC Cancer 2016; 16:553. [PMID: 27465249 PMCID: PMC4964013 DOI: 10.1186/s12885-016-2570-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 07/15/2016] [Indexed: 12/21/2022] Open
Abstract
Background Many urothelial carcinomas (UC) contain activating PIK3CA mutations. In telomerase-immortalized normal urothelial cells (TERT-NHUC), ectopic expression of mutant PIK3CA induces PI3K pathway activation, cell proliferation and cell migration. However, it is not clear whether advanced UC tumors are PIK3CA-dependent and whether PI3K pathway inhibition is a good therapeutic option in such cases. Methods We used retrovirus-mediated delivery of shRNA to knock down mutant PIK3CA in UC cell lines and assessed effects on pathway activation, cell proliferation, migration and tumorigenicity. The effect of the class I PI3K inhibitor GDC-0941 was assessed in a panel of UC cell lines with a range of known molecular alterations in the PI3K pathway. Results Specific knockdown of PIK3CA inhibited proliferation, migration, anchorage-independent growth and in vivo tumor growth of cells with PIK3CA mutations. Sensitivity to GDC-0941 was dependent on hotspot PIK3CA mutation status. Cells with rare PIK3CA mutations and co-occurring TSC1 or PTEN mutations were less sensitive. Furthermore, downstream PI3K pathway alterations in TSC1 or PTEN or co-occurring AKT1 and RAS gene mutations were associated with GDC-0941 resistance. Conclusions Mutant PIK3CA is a potent oncogenic driver in many UC cell lines and may represent a valuable therapeutic target in advanced bladder cancer. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2570-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- R L Ross
- Section of Experimental Oncology, Leeds Institute of Cancer and Pathology, St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - H R McPherson
- Section of Experimental Oncology, Leeds Institute of Cancer and Pathology, St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - L Kettlewell
- Section of Experimental Oncology, Leeds Institute of Cancer and Pathology, St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - S D Shnyder
- Institute of Cancer Therapeutics, University of Bradford, Richmond Road, Bradford, BD7 1DP, UK
| | - C D Hurst
- Section of Experimental Oncology, Leeds Institute of Cancer and Pathology, St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - O Alder
- Section of Experimental Oncology, Leeds Institute of Cancer and Pathology, St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - M A Knowles
- Section of Experimental Oncology, Leeds Institute of Cancer and Pathology, St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK.
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Naymagon L, Abdul-Hay M. Novel agents in the treatment of multiple myeloma: a review about the future. J Hematol Oncol 2016; 9:52. [PMID: 27363832 PMCID: PMC4929712 DOI: 10.1186/s13045-016-0282-1] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Accepted: 06/21/2016] [Indexed: 02/07/2023] Open
Abstract
Multiple myeloma (MM) is a disease that affects plasma cells and can lead to devastating clinical features such as anemia, lytic bone lesions, hypercalcemia, and renal disease. An enhanced understanding of MM disease mechanisms has led to new more targeted treatments. There is now a plethora of treatments available for MM. In this review article, our aim is to discuss many of the novel agents that are being studied or have recently been approved for the treatment of MM. These agents include the following: immunomodulators (pomalidomide), proteasome inhibitors (carfilzomib, marizomib, ixazomib, oprozomib), alkylating agents (bendamustine), AKT inhibitors (afuresertib), BTK inhibitors (ibrutinib), CDK inhibitors (dinaciclib), histone deacetylase inhibitors (panobinostat, rocilinostat, vorinostat), IL-6 inhibitors (siltuximab), kinesin spindle protein inhibitors (filanesib), monoclonal antibodies (daratumumab, elotuzumab, indatuximab, SAR650984), and phosphoinositide 3-kinase (PI3K) inhibitors.
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Affiliation(s)
| | - Maher Abdul-Hay
- Department of Medicine, New York University, New York, USA. .,Perlmutter Cancer Center, New York University, New York, USA. .,NYU School of Medicine, 240 East 38th Street, 19 Floor, New York, NY, 10016, USA.
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24
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Siegel MB, Liu SQ, Davare MA, Spurgeon SE, Loriaux MM, Druker BJ, Scott EC, Tyner JW. Small molecule inhibitor screen identifies synergistic activity of the bromodomain inhibitor CPI203 and bortezomib in drug resistant myeloma. Oncotarget 2016; 6:18921-32. [PMID: 26254279 PMCID: PMC4662464 DOI: 10.18632/oncotarget.4214] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 05/12/2015] [Indexed: 11/25/2022] Open
Abstract
Purpose Despite significant therapeutic progress in multiple myeloma, drug resistance is uniformly inevitable and new treatments are needed. Our aim was to identify novel, efficacious small-molecule combinations for use in drug resistant multiple myeloma. Experimental Design A panel of 116 small molecule inhibitors was used to screen resistant myeloma cell lines for potential therapeutic targets. Agents found to have enhanced activity in the bortezomib or melphalan resistant myeloma cell lines were investigated further in combination. Synergistic combinations of interest were evaluated in primary patient cells. Results The overall single-agent drug sensitivity profiles were dramatically different between melphalan and bortezomib resistant cells, however, the bromodomain inhibitor, CPI203, was observed to have enhanced activity in both the bortezomib and melphalan resistant lines compared to their wild-type counterparts. The combination of bortezomib and CPI203 was found to be synergistic in both the bortezomib and melphalan resistant cell lines as well as in a primary multiple myeloma sample from a patient refractory to recent proteasome inhibitor treatment. The CPI203-bortezomib combination led to enhanced apoptosis and anti-proliferative effects. Finally, in contrast to prior reports of synergy between bortezomib and other epigenetic modifying agents, which implicated MYC downregulation or NOXA induction, our analyses suggest that CPI203-bortezomib synergy is independent of these events. Conclusion Our preclinical data supports a role for the clinical investigation of the bromodomain inhibitor CPI203 combined with bortezomib or alkylating agents in resistant multiple myeloma.
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Affiliation(s)
| | | | - Monika A Davare
- Knight Cancer Institute, Portland, Oregon, USA.,Department of Pediatrics at Oregon Health and Science University, Portland, Oregon, USA
| | | | | | - Brian J Druker
- Knight Cancer Institute, Portland, Oregon, USA.,Howard Hughes Medical Institute, Portland, Oregon, USA
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25
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Alberobello AT, Wang Y, Beerkens FJ, Conforti F, McCutcheon JN, Rao G, Raffeld M, Liu J, Rahhal R, Zhang YW, Giaccone G. PI3K as a Potential Therapeutic Target in Thymic Epithelial Tumors. J Thorac Oncol 2016; 11:1345-1356. [PMID: 27117832 DOI: 10.1016/j.jtho.2016.04.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/14/2016] [Accepted: 04/16/2016] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Thymic epithelial tumors (TETs) are rare tumors originating from the epithelium of the thymus with limited therapeutic options beyond surgery. The pathogenesis of TETs is poorly understood, and the scarcity of model systems for these rare tumors makes the study of their biology very challenging. METHODS A new cell line (MP57) was established from a thymic carcinoma specimen and characterized using standard biomarker analysis, as well as next-generation sequencing (NGS) and functional assays. Sanger sequencing was used to confirm the mutations identified by NGS. RESULTS MP57 possesses all the tested thymic epithelial markers and is deemed a bona fide thymic carcinoma cell line. NGS analysis of MP57 identified a mutation in the gene PIK3R2, which encodes a regulatory subunit of PI3K. Further analysis identified different mutations in multiple PI3K subunit genes in another cell line and several primary thymic carcinoma samples, including two catalytic subunits (PIK3CA and PIK3CG) and another regulatory subunit (PIK3R4). Inhibiting PI3K with GDC-0941 resulted in in vitro antitumor activity in TET cells carrying mutant PI3K subunits. CONCLUSIONS Alterations of PI3K due to mutations in its catalytic or regulatory subunits are observed in a subgroup of TETs, in particular, thymic carcinomas. Targeting PI3K may be an effective strategy to treat these tumors.
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Affiliation(s)
- Anna Teresa Alberobello
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia
| | - Yisong Wang
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia
| | - Frans Joseph Beerkens
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia
| | - Fabio Conforti
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia
| | - Justine N McCutcheon
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia
| | - Guanhua Rao
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia
| | - Mark Raffeld
- Laboratory of Pathology, Center of Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Jing Liu
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia
| | - Raneen Rahhal
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia
| | - Yu-Wen Zhang
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia
| | - Giuseppe Giaccone
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia.
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26
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Zhang L, Beasley S, Prigozhina NL, Higgins R, Ikeda S, Lee FY, Marrinucci D, Jia S. Detection and Characterization of Circulating Tumour Cells in Multiple Myeloma. J Circ Biomark 2016; 5:10. [PMID: 28936258 PMCID: PMC5548310 DOI: 10.5772/64124] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 05/06/2016] [Indexed: 12/15/2022] Open
Abstract
Multiple myeloma (MM) remains an incurable disease despite recent therapeutic improvements. The ability to detect and characterize MM circulating tumour cells (CTCs) in peripheral blood provides an alternative to replace or augment invasive bone marrow (BM) biopsies with a simple blood draw, providing real-time, clinically relevant information leading to improved disease management and therapy selection. Here we have developed and qualified an enrichment-free, cell-based immunofluorescence MM CTC assay that utilizes an automated digital pathology algorithm to distinguish MM CTCs from white blood cells (WBCs) on the basis of CD138 and CD45 expression levels, as well as a number of morphological parameters. These MM CTCs were further characterized for expression of phospho-ribosomal protein S6 (pS6) as a readout for PI3K/AKT pathway activation. Clinical feasibility of the assay was established by testing blood samples from a small cohort of patients, where we detected populations of both CD138pos and CD138neg MM CTCs. In this study, we developed an immunofluorescent cell-based assay to detect and characterize CTCs in MM.
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Affiliation(s)
- Liangxuan Zhang
- Departments of Oncology Biomarker Development, Genentech Inc, South San Francisco, CA, USA
| | | | | | | | - Shoji Ikeda
- Departments of Oncology Biomarker Development, Genentech Inc, South San Francisco, CA, USA
| | | | | | - Shidong Jia
- Departments of Oncology Biomarker Development, Genentech Inc, South San Francisco, CA, USA
- Predicine Inc, Hayward, CA, USA
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Regad T. Targeting RTK Signaling Pathways in Cancer. Cancers (Basel) 2015; 7:1758-84. [PMID: 26404379 PMCID: PMC4586793 DOI: 10.3390/cancers7030860] [Citation(s) in RCA: 263] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 08/24/2015] [Accepted: 08/26/2015] [Indexed: 12/21/2022] Open
Abstract
The RAS/MAP kinase and the RAS/PI3K/AKT pathways play a key role in the regulation of proliferation, differentiation and survival. The induction of these pathways depends on Receptor Tyrosine Kinases (RTKs) that are activated upon ligand binding. In cancer, constitutive and aberrant activations of components of those pathways result in increased proliferation, survival and metastasis. For instance, mutations affecting RTKs, Ras, B-Raf, PI3K and AKT are common in perpetuating the malignancy of several types of cancers and from different tissue origins. Therefore, these signaling pathways became prime targets for cancer therapy. This review aims to provide an overview about the most frequently encountered mutations, the pathogenesis that results from such mutations and the known therapeutic strategies developed to counteract their aberrant functions.
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Affiliation(s)
- Tarik Regad
- The John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, NG11 8NS Nottingham, UK.
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28
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Empirical inference of circuitry and plasticity in a kinase signaling network. Proc Natl Acad Sci U S A 2015; 112:7719-24. [PMID: 26060313 DOI: 10.1073/pnas.1423344112] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Our understanding of physiology and disease is hampered by the difficulty of measuring the circuitry and plasticity of signaling networks that regulate cell biology, and how these relate to phenotypes. Here, using mass spectrometry-based phosphoproteomics, we systematically characterized the topology of a network comprising the PI3K/Akt/mTOR and MEK/ERK signaling axes and confirmed its biological relevance by assessing its dynamics upon EGF and IGF1 stimulation. Measuring the activity of this network in models of acquired drug resistance revealed that cells chronically treated with PI3K or mTORC1/2 inhibitors differed in the way their networks were remodeled. Unexpectedly, we also observed a degree of heterogeneity in the network state between cells resistant to the same inhibitor, indicating that even identical and carefully controlled experimental conditions can give rise to the evolution of distinct kinase network statuses. These data suggest that the initial conditions of the system do not necessarily determine the mechanism by which cancer cells become resistant to PI3K/mTOR targeted therapies. The patterns of signaling network activity observed in the resistant cells mirrored the patterns of response to several drug combination treatments, suggesting that the activity of the defined signaling network truly reflected the evolved phenotypic diversity.
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29
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Hausmann S, Brandt E, Köchel C, Einsele H, Bargou RC, Seggewiss-Bernhardt R, Stühmer T. Loss of serum and glucocorticoid-regulated kinase 3 (SGK3) does not affect proliferation and survival of multiple myeloma cell lines. PLoS One 2015; 10:e0122689. [PMID: 25837824 PMCID: PMC4383545 DOI: 10.1371/journal.pone.0122689] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 02/15/2015] [Indexed: 11/28/2022] Open
Abstract
Multiple myeloma (MM) is a generally fatal plasma cell cancer that often shows activation of the phosphoinositide 3-kinase/Akt (PI3K/Akt) pathway. Targeted pharmacologic therapies, however, have not yet progressed beyond the clinical trial stage, and given the complexity of the PI3K/Akt signalling system (e.g. multiple protein isoforms, diverse feedback regulation mechanisms, strong variability between patients) it is mandatory to characterise its ramifications in order to better guide informed decisions about the best therapeutic approaches. Here we explore whether serum and glucocorticoid-regulated kinase 3 (SGK3), a potential downstream effector of PI3K, plays a role in oncogenic signalling in MM cells—either in concert with or independent of Akt. SGK3 was expressed in all MM cell lines and in all primary MM samples tested. Four MM cell lines representing a broad range of intrinsic Akt activation (very strong: MM.1s, moderate: L 363 and JJN-3, absent: AMO-1) were chosen to test the effects of transient SGK3 knockdown alone and in combination with pharmacological inhibition of Akt, PI3K-p110α, or in the context of serum starvation. Although the electroporation protocol led to strong SGK3 depletion for at least 5 days its absence had no substantial effect on the activation status of potential downstream substrates, or on the survival, viability or proliferation of MM cells in all experimental contexts tested. We conclude that it is unlikely that SGK3 plays a significant role for oncogenic signalling in multiple myeloma.
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Affiliation(s)
- Stefan Hausmann
- Department of Internal Medicine II, Division of Hematology and Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Evelyn Brandt
- Department of Internal Medicine II, Division of Hematology and Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Carolin Köchel
- Department of Internal Medicine II, Division of Hematology and Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Hermann Einsele
- Department of Internal Medicine II, Division of Hematology and Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Ralf C. Bargou
- Comprehensive Cancer Center Mainfranken, University Hospital of Würzburg, Würzburg, Germany
| | | | - Thorsten Stühmer
- Department of Internal Medicine II, Division of Hematology and Oncology, University Hospital of Würzburg, Würzburg, Germany
- * E-mail:
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30
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Acute retinal injury and the relationship between nerve growth factor, Notch1 transcription and short-lived dedifferentiation transient changes of mammalian Müller cells. Vision Res 2015; 110:107-17. [PMID: 25817714 DOI: 10.1016/j.visres.2015.01.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 01/10/2015] [Accepted: 01/23/2015] [Indexed: 11/22/2022]
Abstract
Our aim is to define related molecular events on how dormant Müller glia cells re-enter the cell cycle, proliferate and produce new retinal neurons from initial injury to glial scar formation. Sodium iodate (NaIO3) was used to induce acute retinal injury. Long-Evans rats were administered with NaIO3 or phosphate-buffered saline by intraperitoneal injection. The proliferation, dedifferentiation and neurogenesis of Müller cells were analyzed by double-labeled fluorescence immunohistochemistry with primary antibodies - against Müller cells and specific cell markers. Possible molecules that limit the regenerative potential of Müller cells were also determined by immunofluorescence staining, quantitative RT-PCR, protein array, ELISA and Western blot. In the first 3-7days after NaIO3 administration, Müller cells were activated and underwent a fate switch, including transient proliferation, dedifferentiation and neurogenesis. Nerve growth factor (NGF) signaling concomitantly increased with the downregulation of p27(Kip1) in Müller cells, which may promote Müller cells to re-enter the cell cycle. The transient increase of NGF signaling and the transient decrease of Notch signaling inhibited Hes1, which might enhance the neuronal differentiation of dedifferentiated Müller cells and suppress gliosis. Upregulated Notch and decreased NGF expressions limit dedifferentiation and neurogenesis, but induces retinal Müller cell gliosis at a later stage. We conclude that transient NGF upregulation and Notch1 downregulation may activate the transient proliferation, dedifferentiation and neurogenesis of Müller cells during NaIO3-induced acute retinal injury; which could be a therapeutic target for overcoming Müller cell gliosis. Such therapy could be potentially used for treating retinal-related diseases.
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The novel AKT inhibitor afuresertib shows favorable safety, pharmacokinetics, and clinical activity in multiple myeloma. Blood 2014; 124:2190-5. [PMID: 25075128 DOI: 10.1182/blood-2014-03-559963] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The PI3K/AKT pathway is constitutively active in hematologic malignancies, providing proliferative and antiapoptotic signals and possibly contributing to drug resistance. We conducted an open-label phase 1 study to evaluate the maximum tolerated dose (MTD), safety, pharmacokinetics, and clinical activity of afuresertib-an oral AKT inhibitor-in patients with advanced hematologic malignancies. Seventy-three patients were treated at doses ranging from 25 to 150 mg per day. The MTD was established at 125 mg per day because of 2 dose-limiting toxicities in the 150-mg cohort (liver function test abnormalities). The most frequent adverse events were nausea (35.6%), diarrhea (32.9%), and dyspepsia (24.7%). Maximum plasma concentrations and area under the plasma concentration-time curves from time 0 to 24 hours were generally dose proportional at > 75-mg doses; the median time to peak plasma concentrations was 1.5 to 2.5 hours post dose, with a half-life of approximately 1.7 days. Three multiple myeloma patients attained partial responses; an additional 3 attained minimal responses. Clinical activity was also observed in non-Hodgkin lymphoma, Langerhan's cell histiocytosis, and Hodgkin disease. Single-agent afuresertib showed a favorable safety profile and demonstrated clinical activity against hematologic malignancies, including multiple myeloma.
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32
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CD28-mediated pro-survival signaling induces chemotherapeutic resistance in multiple myeloma. Blood 2014; 123:3770-9. [PMID: 24782505 DOI: 10.1182/blood-2013-10-530964] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Chemotherapeutic resistance remains a significant hurdle in the treatment of multiple myeloma (MM) and is significantly mediated by interactions between MM cells and stromal cells of the bone marrow microenvironment. Despite the importance of these interactions, the specific molecules and downstream signaling components involved remain incompletely understood. We have previously shown that the prototypic T-cell costimulatory receptor CD28, which is also expressed on MM cells, is a key mediator of MM survival and apoptotic resistance. Crosslinking CD28 by agonistic antibodies or myeloid dendritic cells (DC; these express the CD28 ligands CD80/CD86) prevents apoptosis caused by chemotherapy or serum withdrawal. We now report that CD28 pro-survival signaling is dependent upon downstream activation of phosphatidyl-inositol 3-kinase/Akt, inactivation of the transcription factor FoxO3a, and decreased expression of the pro-apoptotic molecule Bim. Conversely, blocking the CD28-CD80/CD86 interaction between MM cells and DC in vitro abrogates the DC's ability to protect MM cells against chemotherapy-induced death. Consistent with these observations, in vivo blockade of CD28-CD80/CD86 in the Vk*MYC murine myeloma model sensitizes MM cells to chemotherapy and significantly reduces tumor burden. Taken together, our findings suggest that CD28 is an important mediator of MM survival during stress and can be targeted to overcome chemotherapy resistance.
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Hofmann C, Stühmer T, Schmiedl N, Wetzker R, Mottok A, Rosenwald A, Langer C, Zovko J, Chatterjee M, Einsele H, Bargou RC, Steinbrunn T. PI3K-dependent multiple myeloma cell survival is mediated by the PIK3CA isoform. Br J Haematol 2014; 166:529-39. [PMID: 24766330 DOI: 10.1111/bjh.12920] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 03/04/2014] [Indexed: 01/26/2023]
Abstract
Constitutive phosphatidylinositide 3-kinase (PI3K) signalling has been implicated in multiple myeloma (MM) pathophysiology and is regarded as an actionable target for pharmacological intervention. Isoform-specific PI3K inhibition may offer the most focused treatment approach and could result in greater clinical efficacy and reduced side effects. We therefore performed isoform-specific knockdown of PIK3CA, PIK3CB, PIK3CD, and PIK3CG to analyse their individual contributions to MM cell survival and downstream signalling. In addition, we tested the effectivity of the novel PI3K isoform-specific inhibitors BYL-719 (PIK3CA), TGX-221 (PIK3CB), CAL-101 (PIK3CD), and CAY10505 (PIK3CG). We found the PIK3CA isoform to be of paramount importance for constitutive Akt activity in MM cells, and - in contrast to inhibition of other class I isoforms - only the blockade of PIK3CA was sufficient to induce cell death in a sizeable subgroup of MM samples. Furthermore, pharmacological PIK3CA inhibition in combination treatments of BYL-719 and established anti-myeloma agents resulted in strongly enhanced MM cell death. Our data thus clearly indicate therapeutic potential of PIK3CA inhibitors and support their clinical evaluation in multiple myeloma.
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Affiliation(s)
- Claudia Hofmann
- Division of Haematology and Oncology, Department of Internal Medicine II, University Hospital of Würzburg, Würzburg, Germany
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Distinct roles of class I PI3K isoforms in multiple myeloma cell survival and dissemination. Blood Cancer J 2014; 4:e204. [PMID: 24769645 PMCID: PMC4003418 DOI: 10.1038/bcj.2014.24] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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Molecularly targeted therapies in multiple myeloma. LEUKEMIA RESEARCH AND TREATMENT 2014; 2014:976567. [PMID: 24829804 PMCID: PMC4009206 DOI: 10.1155/2014/976567] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 04/04/2014] [Accepted: 04/05/2014] [Indexed: 01/22/2023]
Abstract
Multiple myeloma (MM) is a hematological malignancy that remains incurable because most patients will eventually relapse or become refractory to the treatments. Although the treatments have improved, the major problem in MM is the resistance to therapy. Novel agents are currently in development for the treatment of relapsed/refractory MM, including immunomodulatory drugs, proteasome inhibitors, monoclonal antibodies, cell signaling targeted therapies, and strategies targeting the tumor microenvironment. We have previously reviewed in detail the contemporary immunomodulatory drugs, proteasome inhibitors, and monoclonal antibodies therapies for MM. Therefore, in this review, we focused on the role of molecular targeted therapies in the treatment of relapsed/refractory multiple myeloma, including cell signaling targeted therapies (HDAC, PI3K/AKT/mTOR, p38 MAPK, Hsp90, Wnt, Notch, Hedgehog, and cell cycle) and strategies targeting the tumor microenvironment (hypoxia, angiogenesis, integrins, CD44, CXCR4, and selectins). Although these novel agents have improved the therapeutic outcomes for MM patients, further development of new therapeutic agents is warranted.
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Overcoming inherent resistance to histone deacetylase inhibitors in multiple myeloma cells by targeting pathways integral to the actin cytoskeleton. Cell Death Dis 2014; 5:e1134. [PMID: 24651437 PMCID: PMC3973216 DOI: 10.1038/cddis.2014.98] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 01/22/2014] [Accepted: 02/10/2014] [Indexed: 01/05/2023]
Abstract
Histone deacetylase inhibitors (HDACi) are novel chemotherapeutics undergoing evaluation in clinical trials for the potential treatment of patients with multiple myeloma (MM). Although HDACi have demonstrable synergy when combined with proteasome inhibitors (PIs), recent evidence indicates that combination of HDACi and PI is beneficial only in a subset of patients with advanced MM, clearly indicating that other rational combinations should be explored. In this context we hypothesized that understanding the molecular signature associated with inherent resistance to HDACi would provide a basis for the identification of therapeutic combinations with improved clinical efficacy. Using human myeloma cell lines (HMCL) categorized as sensitive, intermediate or resistant to HDACi, gene expression profiling (GEP) and gene ontology enrichment analyses were performed to determine if a genetic signature associated with inherent resistance to HDACi-resistance could be identified. Correlation of GEP to increasing or decreasing sensitivity to HDACi indicated a unique 35-gene signature that was significantly enriched for two pathways – regulation of actin cytoskeleton and protein processing in endoplasmic reticulum. When HMCL and primary MM samples were treated with a combination of HDACi and agents targeting the signaling pathways integral to the actin cytoskeleton, synergistic cell death was observed in all instances, thus providing a rationale for combining these agents with HDACi for the treatment of MM to overcome resistance. This report validates a molecular approach for the identification of HDACi partner drugs and provides an experimental framework for the identification of novel therapeutic combinations for anti-MM treatment.
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37
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Li C, Takahashi C, Zhang L, Huseni M, Stankovich B, Mashhedi H, Lee J, French D, Anderson JE, Kim D, Howell K, Brauer MJ, Kowanetz M, Yan Y, Humke E, Ebens A, Hampton G, Lackner MR, Hegde P, Jia S. Development of a robust flow cytometry-based pharmacodynamic assay to detect phospho-protein signals for phosphatidylinositol 3-kinase inhibitors in multiple myeloma. J Transl Med 2013; 11:76. [PMID: 23522020 PMCID: PMC3623880 DOI: 10.1186/1479-5876-11-76] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Accepted: 03/20/2013] [Indexed: 11/23/2022] Open
Abstract
Background The phosphatidylinositol 3-kinase (PI3K) pathway plays an important role in multiple myeloma (MM), a blood cancer associated with uncontrolled proliferation of bone marrow plasma cells. This study aimed to develop a robust clinical pharmacodynamic (PD) assay to measure the on-target PD effects of the selective PI3K inhibitor GDC-0941 in MM patients. Methods We conducted an in vitro drug wash-out study to evaluate the feasibility of biochemical approaches in measuring the phosphorylation of S6 ribosomal protein (S6), one of the commonly used PD markers for PI3K pathway inhibition. We then developed a 7-color phospho-specific flow cytometry assay, or phospho flow assay, to measure the phosphorylation state of intracellular S6 in bone marrow aspirate (BMA) and peripheral blood (PB). Integrated mean fluorescence intensity (iMFI) was used to calculate fold changes of phosphorylation. Assay sensitivity was evaluated by comparing phospho flow with Meso Scale Discovery (MSD) and immunohistochemistry (IHC) assays. Finally, a sample handling method was developed to maintain the integrity of phospho signal during sample shipping and storage to ensure clinical application. Results The phospho flow assay provided single-cell PD monitoring of S6 phosphorylation in tumor and surrogate cells using fixed BMA and PB, assessing pathway modulation in response to GDC-0941 with sensitivity similar to that of MSD assay. The one-shot sample fixation and handling protocol herein demonstrated exceptional preservation of protein phosphorylation. In contrast, the IHC assay was less sensitive in terms of signal quantification while the biochemical approach (MSD) was less suitable to assess PD activities due to the undesirable impact associated with cell isolation on the protein phosphorylation in tumor cells. Conclusions We developed a robust PD biomarker assay for the clinical evaluation of PI3K inhibitors in MM, allowing one to decipher the PD response in a relevant cell population. To our knowledge, this is the first report of an easily implemented clinical PD assay that incorporates an unbiased one-shot sample handling protocol, all (staining)-in-one (tube) phospho flow staining protocol, and an integrated modified data analysis for PD monitoring of kinase inhibitors in relevant cell populations in BMA and PB. The methods described here ensure a real-time, reliable and reproducible PD readout, which can provide information for dose selection as well as help to identify optimal combinations of targeted agents in early clinical trials.
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Affiliation(s)
- Congfen Li
- Genentech Inc, South San Francisco, CA 94080, USA
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