1
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Zhang Q, Zhu Z, Guan J, Hu Y, Zhou W, Ye W, Lin B, Weng S, Chen Y, Zheng C. Hes1 Controls Proliferation and Apoptosis in Chronic Lymphoblastic Leukemia Cells by Modulating PTEN Expression. Mol Biotechnol 2022; 64:1419-1430. [PMID: 35704163 DOI: 10.1007/s12033-022-00476-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 03/02/2022] [Indexed: 12/26/2022]
Abstract
Hairy and enhancer of split homolog-1 (HES1), regulated by the Notch, has been reported to play important roles in the immune response and cancers, such as leukemia. In this study, we aim to explore the effect of HES1-mediated Notch1 signaling pathway in chronic lymphocytic leukemia (CLL). Reverse transcription quantitative polymerase chain reaction and Western blot assay were conducted to determine the expression of HES1, Notch1, and PTEN in B lymphocytes of peripheral blood samples of 60 CLL patients. We used lentivirus-mediated overexpression or silencing of HES1 and the Notch1 signaling pathway inhibitor, MW167, to detect the interaction among HES1, Notch1, and PTEN in CLL MEC1 and HG3 cells. MTT assay and flow cytometry were employed for detection of biological behaviors of CLL cells. HES1 and Notch1 showed high expression, but PTEN displayed low expression in B lymphocytes of peripheral blood samples of patients with CLL in association with poor prognosis. HES1 bound to the promoter region of PTEN and reduced PTEN expression. Overexpression of HES1 activated the Notch1 signaling pathway, thus promoting the proliferation of CLL cells, increasing the proportion of cells arrested at the S phase and limiting the apoptosis of CLL cells. Collectively, HES1 can promote activation of the Notch1 signaling pathway to cause PTEN transcription inhibition and the subsequent expression reduction, thereby promoting the proliferation and inhibiting the apoptosis of CLL cells.
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Affiliation(s)
- Qikai Zhang
- Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Zongsi Zhu
- Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Jiaqiang Guan
- Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Yingying Hu
- Department of Haematology and Chemotherapy, Wenzhou Central Hospital, Theorem Clinical College of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Wenjin Zhou
- Department of Chemotherapy, Cancer Hospital of The University of Chinese Academy of Science, Wenzhou Campus, Wenzhou, 325000, People's Republic of China
| | - Wanchun Ye
- Department of Chemotherapy, Cancer Hospital of The University of Chinese Academy of Science, Wenzhou Campus, Wenzhou, 325000, People's Republic of China
| | - Bijing Lin
- Department of Haematology and Chemotherapy, Wenzhou Central Hospital, Theorem Clinical College of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Shanshan Weng
- Department of Haematology and Chemotherapy, Wenzhou Central Hospital, Theorem Clinical College of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Yuemiao Chen
- Department of Haematology and Chemotherapy, Wenzhou Central Hospital, Theorem Clinical College of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Cuiping Zheng
- Department of Haematology and Chemotherapy, Wenzhou Central Hospital, Theorem Clinical College of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China.
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2
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Chen XL, Wang SF, Liang XT, Liang HX, Wang TT, Wu SQ, Qiu ZJ, Zhan R, Xu ZS. SENP2 exerts an anti‑tumor effect on chronic lymphocytic leukemia cells through the inhibition of the Notch and NF‑κB signaling pathways. Int J Oncol 2018; 54:455-466. [PMID: 30431078 PMCID: PMC6317657 DOI: 10.3892/ijo.2018.4635] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 10/19/2018] [Indexed: 01/28/2023] Open
Abstract
Chronic lymphocytic leukemia (CLL) is one of the most often diagnosed hematological malignant tumors in the Western world and a type of inert B-cell lymphoma that commonly attacks the elderly. Small ubiquitin related modifier (SUMO)-specific protease 2 (SENP2) can act as a suppressor in various types of cancer by regulating the stability of β-catenin to affect the Notch signaling pathway; however, it has a low expression level in CLL cells. In this study, we firstly used western blot analysis and RT-qPCR to detect the protein and mRNA expression levels of SENP2 in the peripheral blood of patients with CLL and healthy volunteers. Secondly, we overexpressed or knocked down the expression of SENP2 in CLL cells and then determined the cell invasive and chemotactic ability in a Transwell assay and chemotaxis assay. We examined the sensitivity of the cells to cytarabine and dexamethasone via a CCK-8 assay and determined the cell apoptotic condition and the expression of the Notch signaling pathway using flow cytometry and western blot analysis. The results demonstrated that the patients with CLL had relatively low expression levels of SENP2. The overexpression of SENP2 in the CLL cells decreased their invasive and proliferative ability, as well as their chemotactic response and enhanced their sensitivity to cytarabine and dexamethasone, while it promoted cell apoptosis. The silencing of SENP2 in the CLL cells generally produced the opposite results. We thus hypothesized that the overexpression of SENP2 downregulated β-catenin expression, thus inhibiting the Notch signaling pathway in CLL cells. Moreover, the nuclear factor (NF)-κB signaling pathway was also regulated by the overexpression of SENP2. On the whole, the findings of this study indicate tha SENP2 can act as a tumor suppressor in CLL cells, and may thus prove to be a novel target for CLL treatment in clinical practice.
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Affiliation(s)
- Xiu-Li Chen
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Shi-Fen Wang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Xue-Ting Liang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Hui-Xin Liang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Ting-Ting Wang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Shun-Quan Wu
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Zong-Jian Qiu
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Rong Zhan
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Zhen-Shu Xu
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
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3
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Chen XL, Wang SF, Xu ZS. [The relationship between NOTCH1 mutation and the Richter transformation in chronic lymphocytic leukemia]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2018; 39:787-789. [PMID: 30369195 PMCID: PMC7342246 DOI: 10.3760/cma.j.issn.0253-2727.2018.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Indexed: 11/25/2022]
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4
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Baldoni S, Del Papa B, Dorillo E, Aureli P, De Falco F, Rompietti C, Sorcini D, Varasano E, Cecchini D, Zei T, Di Tommaso A, Rosati E, Alexe G, Roti G, Stegmaier K, Di Ianni M, Falzetti F, Sportoletti P. Bepridil exhibits anti-leukemic activity associated with NOTCH1 pathway inhibition in chronic lymphocytic leukemia. Int J Cancer 2018; 143:958-970. [PMID: 29508386 PMCID: PMC6055653 DOI: 10.1002/ijc.31355] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 02/15/2018] [Accepted: 02/21/2018] [Indexed: 12/30/2022]
Abstract
Dysregulated NOTCH1 signaling, by either gene mutations or microenvironment interactions, has been increasingly linked to chronic lymphocytic leukemia (CLL). Thus, inhibiting NOTCH1 activity represents a potential therapeutic opportunity for this disease. Using gene expression-based screening, we identified the calcium channel modulator bepridil as a new NOTCH1 pathway inhibitor. In primary CLL cells, bepridil induced selective apoptosis even in the presence of the protective stroma. Cytotoxic effects of bepridil were independent of NOTCH1 mutation and other prognostic markers. The antitumor efficacy of bepridil was associated with inhibition of NOTCH1 activity through a decrement in trans-membrane and activated NOTCH1 protein levels with unchanged NOTCH2 protein levels. In a CLL xenotransplant model, bepridil significantly reduced the percentage of leukemic cells infiltrating the spleen via enhanced apoptosis and decreased NOTCH1 activation. In conclusion, we report in vitro and in vivo anti-leukemic activity of bepridil associated with inhibition of the NOTCH1 pathway in CLL. These data provide a rationale for the clinical development of bepridil as anti-NOTCH1 targeted therapy for CLL patients.
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MESH Headings
- Animals
- Antineoplastic Agents/pharmacology
- Apoptosis/drug effects
- Bepridil/pharmacology
- Biomarkers, Tumor/metabolism
- Calcium Channel Blockers/pharmacology
- Chemotaxis/drug effects
- Drug Screening Assays, Antitumor
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/metabolism
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Mesenchymal Stem Cells/cytology
- Mesenchymal Stem Cells/drug effects
- Mice
- Mutation
- Prognosis
- Receptor, Notch1/antagonists & inhibitors
- Receptor, Notch1/genetics
- Receptor, Notch1/metabolism
- Tumor Microenvironment
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Stefano Baldoni
- Hematology Section, Department of Life, Health and Environmental SciencesUniversity of L'AquilaL'AquilaItaly
| | - Beatrice Del Papa
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Erica Dorillo
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Patrizia Aureli
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Filomena De Falco
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Chiara Rompietti
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Daniele Sorcini
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Emanuela Varasano
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Debora Cecchini
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Tiziana Zei
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Ambra Di Tommaso
- Hematology Section, Department of Life, Health and Environmental SciencesUniversity of L'AquilaL'AquilaItaly
| | - Emanuela Rosati
- Biosciences and Medical Embryology Section, Department of Experimental MedicineUniversity of PerugiaPerugiaItaly
| | - Gabriela Alexe
- Department of Pediatric OncologyDana‐Farber Cancer Institute and Boston Children's Hospital, Harvard Medical SchoolBostonMA
| | - Giovanni Roti
- Hematology and BMT Unit, Department of Medicine and SurgeryUniversity of ParmaParmaItaly
| | - Kimberly Stegmaier
- Department of Pediatric OncologyDana‐Farber Cancer Institute and Boston Children's Hospital, Harvard Medical SchoolBostonMA
| | - Mauro Di Ianni
- Department of Medicine and Aging SciencesUniversity of Chieti PescaraChietiItaly
- Department of HematologyTransfusion Medicine and Biotechnologies, Ospedale CivilePescaraItaly
| | - Franca Falzetti
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
| | - Paolo Sportoletti
- Institute of Hematology‐Centro di Ricerche Emato‐Oncologiche (CREO), University of PerugiaPerugiaItaly
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Duan Y, Dong X, Nie J, Li P, Lu F, Ma D, Ji C. Wee1 kinase inhibitor MK-1775 induces apoptosis of acute lymphoblastic leukemia cells and enhances the efficacy of doxorubicin involving downregulation of Notch pathway. Oncol Lett 2018; 16:5473-5481. [PMID: 30250620 DOI: 10.3892/ol.2018.9291] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 01/18/2018] [Indexed: 11/06/2022] Open
Abstract
Acute lymphoblastic leukemia (ALL) is an aggressive hematologic malignancy affecting pediatric and adult populations. Although the outcomes of ALL in children have improved markedly in previous years, limited treatment strategies are available at present for adult patients with ALL. Wee1 is a crucial cell cycle checkpoint kinase of G2/M that regulates cell cycle progression and maintains chromatin integrity. MK-1775, a selective inhibitor of Wee1 has recently been identified to be able to induce apoptosis of tumor cells by abrogating G2/M checkpoint. The present study investigated the anti-leukemic activity of MK-1775 alone and in combination with doxorubicin (Adriamycin®; ADM) in various human ALL cell lines. MK-1775 treatment induced apoptosis of ALL cells, accompanied by unscheduled mitotic entry and downregulation of Notch pathway. The anti-leukemic activity of MK-1775 was in a concentration- and time-dependent manner. The data also indicated that it decreased the half-maximal inhibitory concentration (IC50) of ADM compared with the control group. The combination of MK-1775 and ADM induced an increased apoptotic rate compared with each agent alone. In addition, the human bone marrow stromal cell HS-5 cell line was detected to exhibit an increased IC50 value of MK-1775 treatment in contrast to ALL cell lines. It indicates that the hematopoietic supportive capability may remain intact during the treatment of MK-1775. Taken together, the Wee1 inhibitor MK-1775 may be an attractive agent in the treatment of patients with ALL.
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Affiliation(s)
- Yanchao Duan
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China.,Department of Hematology, Affiliated Hospital of Taishan Medical University, Taian, Shandong 271000, P.R. China
| | - Xin Dong
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Jing Nie
- Department of Internal Medicine, The Central Hospital of Taian, Taian, Shandong 271000, P.R. China
| | - Peng Li
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Fei Lu
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Daoxin Ma
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Chunyan Ji
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
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6
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Pentoxifylline Added to Steroid Window Treatment Phase Modified Apoptotic Gene Expression in Pediatric Patients With Acute Lymphoblastic Leukemia. J Pediatr Hematol Oncol 2018; 40:360-367. [PMID: 29683943 DOI: 10.1097/mph.0000000000001152] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Pentoxifylline is a xanthine that possesses antitumor properties and that can induce higher apoptosis in the leukemic cells of pediatric patients with acute lymphoblastic leukemia (ALL) during treatment with prednisone. We conducted a phase 1 pilot, controlled, randomized trial to evaluate the gene expression modified by pentoxifylline during the steroid window of induction to remission phase in patients newly diagnosed with ALL. Experimental and control treatments induced broad changes in the gene expression profile. Patients who received just prednisone upregulated 377 and downregulated 344 genes, in contrast with patients treated with the experimental treatment (combination of prednisone and pentoxifylline), who demonstrated upregulation of 1319 and downregulation of 1594 genes. The most important genes modified in this pathway are those with proapoptotic activity, the majority of these overexpressed. Thus, the addition of pentoxifylline to the treatment with prednisone during steroid window in patients with ALL modified the gene expression profile and changed different signal pathways of the leukemic cell. The combination of both drugs represents a therapeutic alternative for potentiating antileukemic therapy.
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7
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Rosati E, Baldoni S, De Falco F, Del Papa B, Dorillo E, Rompietti C, Albi E, Falzetti F, Di Ianni M, Sportoletti P. NOTCH1 Aberrations in Chronic Lymphocytic Leukemia. Front Oncol 2018; 8:229. [PMID: 29998084 PMCID: PMC6030253 DOI: 10.3389/fonc.2018.00229] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 06/05/2018] [Indexed: 01/13/2023] Open
Abstract
Chronic lymphocytic leukemia (CLL) is an incurable B-cell neoplasm characterized by highly variable clinical outcomes. In recent years, genomic and molecular studies revealed a remarkable heterogeneity in CLL, which mirrored the clinical diversity of this disease. These studies profoundly enhanced our understanding of leukemia cell biology and led to the identification of new biomarkers with potential prognostic and therapeutic significance. Accumulating evidence indicates a key role of deregulated NOTCH1 signaling and NOTCH1 mutations in CLL. This review highlights recent discoveries that improve our understanding of the pathophysiological NOTCH1 signaling in CLL and the clinical impact of NOTCH1 mutations in retrospective and prospective trials. In addition, we discuss the rationale for a therapeutic strategy aiming at inhibiting NOTCH1 signaling in CLL, along with an overview on the currently available NOTCH1-directed approaches.
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Affiliation(s)
- Emanuela Rosati
- Department of Experimental Medicine, Biosciences and Medical Embryology Section, University of Perugia, Perugia, Italy
| | - Stefano Baldoni
- Department of Life, Hematology Section, Health and Environmental Sciences, University of L'Aquila, Perugia, Italy
| | - Filomena De Falco
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Beatrice Del Papa
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Erica Dorillo
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Chiara Rompietti
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Elisa Albi
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Franca Falzetti
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Mauro Di Ianni
- Department of Medicine and Aging Sciences, University of Chieti Pescara, Chieti, Italy.,Department of Hematology, Transfusion Medicine and Biotechnologies, Ospedale Civile, Pescara, Italy
| | - Paolo Sportoletti
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
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8
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Di Ianni M, Baldoni S, Del Papa B, Aureli P, Dorillo E, De Falco F, Albi E, Varasano E, Di Tommaso A, Giancola R, Accorsi P, Rotta G, Rompietti C, Silva Barcelos EC, Campese AF, Di Bartolomeo P, Screpanti I, Rosati E, Falzetti F, Sportoletti P. NOTCH1 Is Aberrantly Activated in Chronic Lymphocytic Leukemia Hematopoietic Stem Cells. Front Oncol 2018; 8:105. [PMID: 29732315 PMCID: PMC5919960 DOI: 10.3389/fonc.2018.00105] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 03/23/2018] [Indexed: 11/13/2022] Open
Abstract
To investigate chronic lymphocytic leukemia (CLL)-initiating cells, we assessed NOTCH1 mutation/expression in hematopoietic stem cells (HSCs). In NOTCH1-mutated CLL, we detected subclonal mutations in 57% CD34+/CD38− HSCs. NOTCH1 mutation was present in 66% CD34+/CD38+ progenitor cells displaying an increased mutational burden compared to HSCs. Flow cytometric analysis revealed significantly higher NOTCH1 activation in CD34+/CD38− and CD34+/CD38+ cells from CLL patients, regardless NOTCH1 mutation compared to healthy donors. Activated NOTCH1 resulted in overexpression of the NOTCH1 target c-MYC. We conclude that activated NOTCH1 is an early event in CLL that may contribute to aberrant HSCs in this disease.
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Affiliation(s)
- Mauro Di Ianni
- Department of Medicine and Aging Sciences, University of Chieti Pescara, Chieti, Italy.,Department of Hematology, Transfusion Medicine and Biotechnologies, Ospedale Civile, Pescara, Italy
| | - Stefano Baldoni
- Department of Life, Health and Environmental Sciences, Hematology Section, University of L'Aquila, L'Aquila, Italy
| | - Beatrice Del Papa
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Patrizia Aureli
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Erica Dorillo
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Filomena De Falco
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Elisa Albi
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Emanuela Varasano
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Ambra Di Tommaso
- Department of Life, Health and Environmental Sciences, Hematology Section, University of L'Aquila, L'Aquila, Italy
| | - Raffaella Giancola
- Department of Hematology, Transfusion Medicine and Biotechnologies, Ospedale Civile, Pescara, Italy
| | - Patrizia Accorsi
- Department of Hematology, Transfusion Medicine and Biotechnologies, Ospedale Civile, Pescara, Italy
| | | | - Chiara Rompietti
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Estevão Carlos Silva Barcelos
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy.,Universidade Federal do Espírito Santo, Vitória, Brazil
| | | | - Paolo Di Bartolomeo
- Department of Hematology, Transfusion Medicine and Biotechnologies, Ospedale Civile, Pescara, Italy
| | - Isabella Screpanti
- Department of Molecular Medicine, Sapienza, University of Rome, Rome, Italy
| | - Emanuela Rosati
- Department of Experimental Medicine, Biosciences and Medical Embriology Section, University of Perugia, Perugia, Italy
| | - Franca Falzetti
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Paolo Sportoletti
- Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
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9
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Shull AY, Noonepalle SK, Awan FT, Liu J, Pei L, Bollag RJ, Salman H, Ding Z, Shi H. RPPA-based protein profiling reveals eIF4G overexpression and 4E-BP1 serine 65 phosphorylation as molecular events that correspond with a pro-survival phenotype in chronic lymphocytic leukemia. Oncotarget 2016; 6:14632-45. [PMID: 25999352 PMCID: PMC4546493 DOI: 10.18632/oncotarget.4104] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 04/08/2015] [Indexed: 12/22/2022] Open
Abstract
Chronic lymphocytic leukemia (CLL), the most common adult leukemia, remains incurable despite advancements in treatment regimens over the past decade. Several expression profile studies have been pursued to better understand CLL pathogenesis. However, these large-scale studies only provide information at the transcriptional level. To better comprehend the differential protein changes that take place in CLL, we performed a reverse-phase protein array (RPPA) analysis using 167 different antibodies on B-cell lysates from 18 CLL patients and 6 normal donors. From our analysis, we discovered an enrichment of protein alterations involved with mRNA translation, specifically upregulation of the translation initiator eIF4G and phosphorylation of the cap-dependent translation inhibitor 4E-BP1 at serine 65. Interestingly, 4E-BP1 phosphorylation occurred independently of AKT phosphorylation, suggesting a disconnect between PI3K/AKT pathway activation and 4E-BP1 phosphorylation. Based on these results, we treated primary CLL samples with NVP-BEZ235, a PI3K/mTOR dual inhibitor, and compared its apoptotic-inducing potential against the BTK inhibitor Ibrutinib and the PI3Kδ inhibitor Idelalisib. We demonstrated that treatment with NVP-BEZ235 caused greater apoptosis, greater apoptotic cleavage of eIF4G, and greater dephosphorylation of 4E-BP1 in primary CLL cells. Taken together, these results highlight the potential dependence of eIF4G overexpression and 4E-BP1 phosphorylation in CLL survival.
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Affiliation(s)
- Austin Y Shull
- Department of Biochemistry & Molecular Biology, Georgia Regents University, Augusta, Georgia, USA.,GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA
| | - Satish K Noonepalle
- Department of Biochemistry & Molecular Biology, Georgia Regents University, Augusta, Georgia, USA.,GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA
| | - Farrukh T Awan
- The Ohio State Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio, USA
| | - Jimei Liu
- GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA
| | - Lirong Pei
- GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA
| | - Roni J Bollag
- GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA.,Department of Pathology, Georgia Regents University, Augusta, Georgia, USA
| | - Huda Salman
- GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA.,Deparment of Medicine, Georgia Regents University, Augusta, Georgia, USA
| | - Zhiyong Ding
- Department of Systems Biology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Huidong Shi
- Department of Biochemistry & Molecular Biology, Georgia Regents University, Augusta, Georgia, USA.,GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA
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González-Suárez E, Sanz-Moreno A. RANK as a therapeutic target in cancer. FEBS J 2016; 283:2018-33. [PMID: 26749530 DOI: 10.1111/febs.13645] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 12/10/2015] [Accepted: 01/06/2016] [Indexed: 01/27/2023]
Abstract
The RANK signaling pathway has emerged as a new target in breast cancer as receptor activator of nuclear factor κB ligand (RANKL) and its receptor RANK mediate the pro-tumorigenic role of progesterone in the mammary gland. Thousands of cancer patients worldwide are already taking RANKL inhibitors for the management of bone metastasis, given the relevance of this pathway in osteoclastogenesis and bone resorption. RANK signaling also has multiple divergent effects in immunity and inflammation, both in the generation of active immune responses and in the induction of tolerance: it is required for lymph node organogenesis, thymic medullary epithelial development and self-tolerance, and regulates activation of several immune cells and inflammatory processes. The RANK pathway interferes with mammary epithelial differentiation and mediates the major proliferative response of mammary epithelium to progesterone and progesterone-driven expansion of mammary stem cells; it also controls hair follicle and epidermal stem cell homeostasis, pointing to RANK as a key regulator of epithelial stemness. Here we revisit the main functions of RANK signaling in bone remodeling, immune cells and epithelial differentiation. We also discuss the mechanistic evidence that supports its pleiotropic effects on cancer: from bone metastasis to immune and cancer-cell-dependent effects.
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Affiliation(s)
- Eva González-Suárez
- Cancer Epigenetics and Biology Program, Bellvitge Biomedical Research Institute, IDIBELL, Barcelona, Spain
| | - Adrián Sanz-Moreno
- Cancer Epigenetics and Biology Program, Bellvitge Biomedical Research Institute, IDIBELL, Barcelona, Spain
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Huang RY, Li L, Wang MJ, Chen XM, Huang QC, Lu CJ. An Exploration of the Role of MicroRNAs in Psoriasis: A Systematic Review of the Literature. Medicine (Baltimore) 2015; 94:e2030. [PMID: 26559308 PMCID: PMC4912302 DOI: 10.1097/md.0000000000002030] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Psoriasis is recently characterized by a specific microRNAs (miRNAs) expression profile, which guides the researchers' efforts to explore the therapeutic targets and objective biomarkers that reflect the diagnosis and disease activity in clinical use for psoriasis.The paper presents a state-of-the-art review of expression and function of miRNAs in psoriasis along with its clinical implications.We analyzed all literature searched by keywords "microRNA" and "psoriasis" in PubMed (Medline) from inception up to July 2015, and the references in the literature searched were also considered.Relevant literature was chosen according to the objective of this review. Relevant literature was searched by 3 independent investigators, and experts in the field of miRNAs and psoriasis were involved in analyzing process.We included any study in which role of miRNAs in psoriasis was examined in relation to disease pathogenesis, diagnosis, and treatment.The specific miRNAs profile has been identified from human psoriatic skin, blood, and hair samples. It is found that genetic polymorphisms related to some of specific miRNAs, miR-146a for example, are associated with psoriasis susceptibility. Key roles of several unique miRNAs, such as miR-203 and miR-125b, in inflammatory responses and immune dysfunction, as well as hyperproliferative disorders of psoriatic lesions have been revealed. Moreover, circulating miRNAs detected from blood samples have a potential of clinic application to be the biomarkers of diagnosis, prognosis, and treatment responses. Additionally, a new layer of regulatory mechanisms mediated by miRNAs is to some extent revealed in pathogenesis of psoriasis.The dramatically altered mRNA expression profiles are displayed in psoriasis, and some of these may become disease markers and therapeutic targets. Herein, this work underscores the potential importance of miRNAs to diagnosis, prognosis, and treatment of psoriasis. However, further study in this field is worth doing in the future, as the exact roles of miRNAs in psoriasis have not been fully elucidated.Systematic review registration number is not registered.
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Affiliation(s)
- Run-Yue Huang
- From the Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine) (RYH, XMC, QCH, CJL); and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, China (RYH, LL, MJW, XMC, CJL)
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12
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Xu ZS, Zhang JS, Zhang JY, Wu SQ, Xiong DL, Chen HJ, Chen ZZ, Zhan R. Constitutive activation of NF-κB signaling by NOTCH1 mutations in chronic lymphocytic leukemia. Oncol Rep 2015; 33:1609-14. [PMID: 25633905 PMCID: PMC4358086 DOI: 10.3892/or.2015.3762] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 01/08/2015] [Indexed: 12/31/2022] Open
Abstract
NOTCH1 mutations occur in approximately 10% of patients with chronic lymphocytic leukemia (CLL). However, the relationship between the genetic aberrations and tumor cell drug resistance or disease progression remains unclear. Frameshift deletions were detected by gene sequencing in the NOTCH1 PEST domain in three naive CLL patients. These mutations were associated with chromosomal abnormalities including trisomy 12 or 13q deletion. Of note, one of the patients developed Richter's transformation during FCR treatment. Immunofluorescent and western blot analyses revealed a markedly higher intracellular domain of NOTCH (ICN) expression in the mutated cells compared with their unmutated counterparts and normal CD19+ B lymphocytes (P<0.01 and P<0.001, respectively). In addition, strong DNA-κB binding activities were observed in the mutant cells by gel shift assays. RT-PCR analysis revealed elevated RelA mRNA expression in the mutant cells, while RelB levels were variable. Reduced levels of RelA and RelB mRNA were observed in unmutated CLL and normal B cells. Compared to unmutated CLL and normal B cells, increased apoptosis occurred in the mutant cells in the presence of GSI (ICN inhibitor) and PDTC (NF-κB inhibitor), particularly under the synergistic effects of the two drugs (P=0.03). Moreover, IKKα and IKKβ, the active components in the NF-κB pathway, were markedly inhibited following prolonged treatment with GSI and PDTC. These results suggested that NOTCH1 mutations constitutively activate the NF-κB signaling pathway in CLL, which is likely related to ICN overexpression, indicating NOTCH1 and NF-κB as potential therapeutic targets in the treatment of CLL.
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Affiliation(s)
- Zhen-Shu Xu
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, P.R. China
| | - Ju-Shun Zhang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, P.R. China
| | - Jing-Yan Zhang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, P.R. China
| | - Shun-Quan Wu
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, P.R. China
| | - Dong-Lian Xiong
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, P.R. China
| | - Hui-Jun Chen
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, P.R. China
| | - Zhi-Zhe Chen
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, P.R. China
| | - Rong Zhan
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, P.R. China
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Abstract
Fludarabine refractoriness (FR) represents an unsolved clinical problem of chronic lymphocytic leukemia (CLL) management. Although next-generation sequencing studies have led to the identification of a number of genes frequently mutated in FR-CLL, a comprehensive evaluation of the FR-CLL genome has not been reported. Toward this end, we studied 10 FR-CLLs by combining whole-exome sequencing and copy number aberration (CNA) analysis, which showed an average of 16.3 somatic mutations and 4 CNAs per sample. Screening of recurrently mutated genes in 48 additional FR-CLLs revealed that ~70% of FR-CLLs carry ≥1 mutation in genes previously associated with CLL clinical course, including TP53 (27.5%), NOTCH1 (24.1%), SF3B1 (18.9%), and BIRC3 (15.5%). In addition, this analysis showed that 10.3% of FR-CLL cases display mutations of the FAT1 gene, which encodes for a cadherin-like protein that negatively regulates Wnt signaling, consistent with a tumor suppressor role. The frequency of FAT1-mutated cases was significantly higher in FR-CLL than in unselected CLLs at diagnosis (10.3% vs 1.1%, P = .004), suggesting a role in the development of a high-risk phenotype. These findings have general implications for the mechanisms leading to FR and point to Wnt signaling as a potential therapeutic target in FR-CLL.
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