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Shi ZF, Li KKW, Liu APY, Chung NYF, Wong SC, Chen H, Woo PYM, Chan DTM, Mao Y, Ng HK. The Molecular Landscape of Primary CNS Lymphomas (PCNSLs) in Children and Young Adults. Cancers (Basel) 2024; 16:1740. [PMID: 38730692 PMCID: PMC11083424 DOI: 10.3390/cancers16091740] [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: 04/03/2024] [Revised: 04/26/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
Pediatric brain tumors are often noted to be different from their adult counterparts in terms of molecular features. Primary CNS lymphomas (PCNSLs) are mostly found in elderly adults and are uncommon in children and teenagers. There has only been scanty information about the molecular features of PCNSLs at a young age. We examined PCNSLs in 34 young patients aged between 7 and 39 years for gene rearrangements of BCl2, BCL6, CCND1, IRF4, IGH, IGL, IGK, and MYC, homozygous deletions (HD) of CDKN2A, and HLA by FISH. Sequencing was performed using WES, panel target sequencing, or Sanger sequencing due to the small amount of available tissues. The median OS was 97.5 months and longer than that for older patients with PCNSLs. Overall, only 14 instances of gene rearrangement were found (5%), and patients with any gene rearrangement were significantly older (p = 0.029). CDKN2A HD was associated with a shorter OS (p < 0.001). Only 10/31 (32%) showed MYD88 mutations, which were not prognostically significant, and only three of them were L265P mutations. CARD11 mutations were found in 8/24 (33%) cases only. Immunophenotypically, the cases were predominantly GCB, in contrast to older adults (61%). In summary, we showed that molecular findings identified in the PCNSLs of the older patients were only sparingly present in pediatric and young adult patients.
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Affiliation(s)
- Zhi-Feng Shi
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China;
- Hong Kong and Shanghai Brain Consortium (HSBC), Hong Kong, China
| | - Kay Ka-Wai Li
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong, China; (K.K.-W.L.); (N.Y.-F.C.); (S.-C.W.)
| | - Anthony Pak-Yin Liu
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong, China
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children’s Hospital, Hong Kong, China
| | - Nellie Yuk-Fei Chung
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong, China; (K.K.-W.L.); (N.Y.-F.C.); (S.-C.W.)
| | - Sze-Ching Wong
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong, China; (K.K.-W.L.); (N.Y.-F.C.); (S.-C.W.)
| | - Hong Chen
- Department of Pathology, Huashan Hospital, Fudan University, Shanghai 200040, China;
| | - Peter Yat-Ming Woo
- Division of Neurosurgery, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong, China; (P.Y.-M.W.); (D.T.-M.C.)
| | - Danny Tat-Ming Chan
- Division of Neurosurgery, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong, China; (P.Y.-M.W.); (D.T.-M.C.)
| | - Ying Mao
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China;
- Hong Kong and Shanghai Brain Consortium (HSBC), Hong Kong, China
| | - Ho-Keung Ng
- Hong Kong and Shanghai Brain Consortium (HSBC), Hong Kong, China
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong, China; (K.K.-W.L.); (N.Y.-F.C.); (S.-C.W.)
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Mosquera Orgueira A, Cid López M, Peleteiro Raíndo A, Díaz Arias JÁ, Antelo Rodríguez B, Bao Pérez L, Alonso Vence N, Bendaña López Á, Abuin Blanco A, Melero Valentín P, Ferreiro Ferro R, Aliste Santos C, Fraga Rodríguez MF, González Pérez MS, Pérez Encinas MM, Bello López JL. Detection of Rare Germline Variants in the Genomes of Patients with B-Cell Neoplasms. Cancers (Basel) 2021; 13:cancers13061340. [PMID: 33809641 PMCID: PMC8001490 DOI: 10.3390/cancers13061340] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 12/19/2022] Open
Abstract
Simple Summary The global importance of rare variants in tumorigenesis has been addressed by some pan-cancer analysis, revealing significant enrichments in protein-truncating variants affecting genes such as ATM, BRCA1/2, BRIP1, and MSH6. Germline variants can influence treatment response and contribute to the development of treatment-related second neoplasms, especially in childhood leukemia. We aimed to analyze the genomes of patients with B-cell lymphoproliferative disorders for the discovery of genes enriched in rare pathogenic variants. We discovered a significant enrichment for two genes in germline rare and dysfunctional variants. Additionally, we detected rare and likely pathogenic variants associated with disease prognosis and potential druggability, indicating a relevant role of these events in the variability of cancer phenotypes. Abstract There is growing evidence indicating the implication of germline variation in cancer predisposition and prognostication. Here, we describe an analysis of likely disruptive rare variants across the genomes of 726 patients with B-cell lymphoid neoplasms. We discovered a significant enrichment for two genes in rare dysfunctional variants, both of which participate in the regulation of oxidative stress pathways (CHMP6 and GSTA4). Additionally, we detected 1675 likely disrupting variants in genes associated with cancer, of which 44.75% were novel events and 7.88% were protein-truncating variants. Among these, the most frequently affected genes were ATM, BIRC6, CLTCL1A, and TSC2. Homozygous or germline double-hit variants were detected in 28 cases, and coexisting somatic events were observed in 17 patients, some of which affected key lymphoma drivers such as ATM, KMT2D, and MYC. Finally, we observed that variants in six different genes were independently associated with shorter survival in CLL. Our study results support an important role for rare germline variation in the pathogenesis and prognosis of B-cell lymphoid neoplasms.
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Affiliation(s)
- Adrián Mosquera Orgueira
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Pathology, SERGAS, 15706 Santiago de Compostela, Spain;
- Correspondence: ; Tel.: +34-981-950-191
| | - Miguel Cid López
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Pathology, SERGAS, 15706 Santiago de Compostela, Spain;
| | - Andrés Peleteiro Raíndo
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Pathology, SERGAS, 15706 Santiago de Compostela, Spain;
| | - José Ángel Díaz Arias
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
| | - Beatriz Antelo Rodríguez
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Pathology, SERGAS, 15706 Santiago de Compostela, Spain;
| | - Laura Bao Pérez
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
| | - Natalia Alonso Vence
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
| | - Ángeles Bendaña López
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Pathology, SERGAS, 15706 Santiago de Compostela, Spain;
| | - Aitor Abuin Blanco
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
| | - Paula Melero Valentín
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
| | - Roi Ferreiro Ferro
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
| | - Carlos Aliste Santos
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Pathology, SERGAS, 15706 Santiago de Compostela, Spain;
| | - Máximo Francisco Fraga Rodríguez
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Pathology, SERGAS, 15706 Santiago de Compostela, Spain;
- Department of Medicine, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - Marta Sonia González Pérez
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
| | - Manuel Mateo Pérez Encinas
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Pathology, SERGAS, 15706 Santiago de Compostela, Spain;
| | - José Luis Bello López
- Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (M.C.L.); (A.P.R.); (J.Á.D.A.); (B.A.R.); (N.A.V.); (Á.B.L.); (M.F.F.R.); (M.S.G.P.); (M.M.P.E.); (J.L.B.L.)
- Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Department of Hematology, SERGAS, 15706 Santiago de Compostela, Spain; (L.B.P.); (A.A.B.); (P.M.V.); (R.F.F.)
- Department of Medicine, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain
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Shen R, Xu P, Wang N, Yi H, Dong L, Fu D, Huang J, Huang H, Janin A, Cheng S, Wang L, Zhao W. Influence of oncogenic mutations and tumor microenvironment alterations on extranodal invasion in diffuse large B-cell lymphoma. Clin Transl Med 2020; 10:e221. [PMID: 33252851 PMCID: PMC7685246 DOI: 10.1002/ctm2.221] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 10/13/2020] [Accepted: 10/16/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Diffuse large B-cell lymphoma (DLBCL) is an aggressive subtype of lymphoma, and multiple extranodal involvement (ENI) indicates adverse clinical outcomes. The aim of this study was to investigate the influence of oncogenic mutations and tumor microenvironment alterations on ENI in DLBCL. METHODS The clinical features of 1960 patients with newly diagnosed DLBCL were analyzed, and DNA and RNA sequencing was performed on 670 and 349 patients, respectively. Oncogenic mutations and tumor microenvironment alterations were compared according to ENI and evaluated in zebrafish patient-derived tumor xenograft models. RESULTS Multiple ENI was significantly associated with poor performance status, advanced stage, elevated serum lactate dehydrogenase, low response rate, and inferior prognosis. Lymphoma invasion of the bones, spleen, bone marrow, liver, and central nervous system were independent unfavorable prognostic factors. MYD88 was frequently mutated in patients with multiple ENI, co-occurred with mutations in CD79B, PIM1, TBL1XR1, BTG1, MPEG1, and PRDM1, and correlated with invasion of the bones, kidney/adrenal glands, breasts, testes, skin, and uterus/ovaries. For tumor microenvironment alterations, patients with multiple ENI showed higher regulatory T-cell (Treg)-recruiting activity, but lower extracellular matrix-encoding gene expression, than those without ENI and with single ENI. Elevated Treg-recruiting activity was related to mutations in B2M, SGK1, FOXO1, HIST1H1E, and ARID1A, and correlated with invasion of the bone marrow and thyroid. Additionally, mutations in MYD88, PIM1, TBL1XR1, SGK1, FOXO1, HIST1H1E, and ARID1A were associated with decreased major histocompatibility complex class I expression. Zebrafish models further revealed relationships between MYD88 mutations and invasion of the kidneys and gonads, as well as B2M mutations and invasion of the bone marrow. Increased CXCR4 expression is linked to bone marrow invasion in an organotropic way. CONCLUSIONS Our findings thus contribute to an improved understanding of the biological behavior of multiple ENI and provide a clinical rationale for targeting ENI in DLBCL.
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Affiliation(s)
- Rong Shen
- State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiShanghai Institute of HematologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Peng‐Peng Xu
- State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiShanghai Institute of HematologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Nan Wang
- State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiShanghai Institute of HematologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Hong‐Mei Yi
- Department of PathologyShanghai Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Lei Dong
- Department of PathologyShanghai Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Di Fu
- State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiShanghai Institute of HematologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Jin‐Yan Huang
- State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiShanghai Institute of HematologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Heng‐Ye Huang
- School of Public HealthShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Anne Janin
- InsermHôpital Saint LouisUniversité Paris 7ParisFrance
| | - Shu Cheng
- State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiShanghai Institute of HematologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Li Wang
- State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiShanghai Institute of HematologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Wei‐Li Zhao
- State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiShanghai Institute of HematologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
- Laboratory of Molecular PathologyPôle de Recherches Sino‐Français en Science du Vivant et GénomiqueShanghaiChina
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Human MYD88L265P is insufficient by itself to drive neoplastic transformation in mature mouse B cells. Blood Adv 2020; 3:3360-3374. [PMID: 31698464 DOI: 10.1182/bloodadvances.2019000588] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 08/20/2019] [Indexed: 12/16/2022] Open
Abstract
MYD88 L265P is the most common mutation in lymphoplasmacytic lymphoma/Waldenström macroglobulinemia (LPL/WM) and one of the most frequent in poor-prognosis subtypes of diffuse large B-cell lymphoma (DLBCL). Although inhibition of the mutated MYD88 pathway has an adverse impact on LPL/WM and DLBCL cell survival, its role in lymphoma initiation remains to be clarified. We show that in mice, human MYD88L265P promotes development of a non-clonal, low-grade B-cell lymphoproliferative disorder with several clinicopathologic features that resemble human LPL/WM, including expansion of lymphoplasmacytoid cells, increased serum immunoglobulin M (IgM) concentration, rouleaux formation, increased number of mast cells in the bone marrow, and proinflammatory signaling that progresses sporadically to clonal, high-grade DLBCL. Murine findings regarding differences in the pattern of MYD88 staining and immune infiltrates in the bone marrows of MYD88 wild-type (MYD88WT) and MYD88L265P mice are recapitulated in the human setting, which provides insight into LPL/WM pathogenesis. Furthermore, histologic transformation to DLBCL is associated with acquisition of secondary genetic lesions frequently seen in de novo human DLBCL as well as LPL/WM-transformed cases. These findings indicate that, although the MYD88L265P mutation might be indispensable for the LPL/WM phenotype, it is insufficient by itself to drive malignant transformation in B cells and relies on other, potentially targetable cooperating genetic events for full development of lymphoma.
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MYC Regulation of D2HGDH and L2HGDH Influences the Epigenome and Epitranscriptome. Cell Chem Biol 2020; 27:538-550.e7. [PMID: 32101699 DOI: 10.1016/j.chembiol.2020.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 12/22/2019] [Accepted: 02/05/2020] [Indexed: 02/07/2023]
Abstract
Mitochondrial D2HGDH and L2HGDH catalyze the oxidation of D-2-HG and L-2-HG, respectively, into αKG. This contributes to cellular homeostasis in part by modulating the activity of αKG-dependent dioxygenases. Signals that control the expression/activity of D2HGDH/L2HGDH are presumed to broadly influence physiology and pathology. Using cell and mouse models, we discovered that MYC directly induces D2HGDH and L2HGDH transcription. Furthermore, in a manner suggestive of D2HGDH, L2HGDH, and αKG dependency, MYC activates TET enzymes and RNA demethylases, and promotes their nuclear localization. Consistent with these observations, in primary B cell lymphomas MYC expression positively correlated with enhancer hypomethylation and overexpression of lymphomagenic genes. Together, these data provide additional evidence for the role of mitochondria metabolism in influencing the epigenome and epitranscriptome, and imply that in specific contexts wild-type TET enzymes could demethylate and activate oncogenic enhancers.
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Hurtz C, Chan LN, Geng H, Ballabio E, Xiao G, Deb G, Khoury H, Chen CW, Armstrong SA, Chen J, Ernst P, Melnick A, Milne T, Müschen M. Rationale for targeting BCL6 in MLL-rearranged acute lymphoblastic leukemia. Genes Dev 2019; 33:1265-1279. [PMID: 31395741 PMCID: PMC6719625 DOI: 10.1101/gad.327593.119] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/02/2019] [Indexed: 12/27/2022]
Abstract
Chromosomal rearrangements of the mixed lineage leukemia (MLL) gene occur in ∼10% of B-cell acute lymphoblastic leukemia (B-ALL) and define a group of patients with dismal outcomes. Immunohistochemical staining of bone marrow biopsies from most of these patients revealed aberrant expression of BCL6, a transcription factor that promotes oncogenic B-cell transformation and drug resistance in B-ALL. Our genetic and ChIP-seq (chromatin immunoprecipitation [ChIP] combined with high-throughput sequencing) analyses showed that MLL-AF4 and MLL-ENL fusions directly bound to the BCL6 promoter and up-regulated BCL6 expression. While oncogenic MLL fusions strongly induced aberrant BCL6 expression in B-ALL cells, germline MLL was required to up-regulate Bcl6 in response to physiological stimuli during normal B-cell development. Inducible expression of Bcl6 increased MLL mRNA levels, which was reversed by genetic deletion and pharmacological inhibition of Bcl6, suggesting a positive feedback loop between MLL and BCL6. Highlighting the central role of BCL6 in MLL-rearranged B-ALL, conditional deletion and pharmacological inhibition of BCL6 compromised leukemogenesis in transplant recipient mice and restored sensitivity to vincristine chemotherapy in MLL-rearranged B-ALL patient samples. Oncogenic MLL fusions strongly induced transcriptional activation of the proapoptotic BH3-only molecule BIM, while BCL6 was required to curb MLL-induced expression of BIM. Notably, peptide (RI-BPI) and small molecule (FX1) BCL6 inhibitors derepressed BIM and synergized with the BH3-mimetic ABT-199 in eradicating MLL-rearranged B-ALL cells. These findings uncover MLL-dependent transcriptional activation of BCL6 as a previously unrecognized requirement of malignant transformation by oncogenic MLL fusions and identified BCL6 as a novel target for the treatment of MLL-rearranged B-ALL.
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Affiliation(s)
- Christian Hurtz
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, California 91016, USA.,Department of Laboratory Medicine, University of California at San Francisco, San Francisco, California 94143, USA
| | - Lai N Chan
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, California 91016, USA.,Department of Laboratory Medicine, University of California at San Francisco, San Francisco, California 94143, USA
| | - Huimin Geng
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, California 91016, USA.,Department of Laboratory Medicine, University of California at San Francisco, San Francisco, California 94143, USA
| | - Erica Ballabio
- Medical Research Council (MRC) Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom
| | - Gang Xiao
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, California 91016, USA.,Department of Laboratory Medicine, University of California at San Francisco, San Francisco, California 94143, USA
| | - Gauri Deb
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, California 91016, USA
| | - Haytham Khoury
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, California 91016, USA
| | - Chun-Wei Chen
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, California 91016, USA
| | - Scott A Armstrong
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Jianjun Chen
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, California 91016, USA
| | - Patricia Ernst
- Department of Pediatrics, University of Colorado, Denver, Colorado 80045, USA
| | - Ari Melnick
- Department of Medicine, Weill Cornell Medical College, New York, New York 10065, USA.,Department of Pharmacology, Weill Cornell Medical College, New York, New York 10065, USA
| | - Thomas Milne
- Medical Research Council (MRC) Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom
| | - Markus Müschen
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, California 91016, USA.,Department of Laboratory Medicine, University of California at San Francisco, San Francisco, California 94143, USA
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Safety profiling of genetically engineered Pim-1 kinase overexpression for oncogenicity risk in human c-kit+ cardiac interstitial cells. Gene Ther 2019; 26:324-337. [PMID: 31239537 DOI: 10.1038/s41434-019-0084-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 03/19/2019] [Accepted: 05/14/2019] [Indexed: 12/11/2022]
Abstract
Advancement of stem cell-based treatment will involve next-generation approaches to enhance therapeutic efficacy which is often modest, particularly in the context of myocardial regenerative therapy. Our group has previously demonstrated the beneficial effect of genetic modification of cardiac stem cells with Pim-1 kinase overexpression to rejuvenate aged cells as well as potentiate myocardial repair. Despite these encouraging findings, concerns were raised regarding potential for oncogenic risk associated with Pim-1 kinase overexpression. Testing of Pim-1 engineered c-kit+ cardiac interstitial cells (cCIC) derived from heart failure patient samples for indices of oncogenic risk was undertaken using multiple assessments including soft agar colony formation, micronucleation, gamma-Histone 2AX foci, and transcriptome profiling. Collectively, findings demonstrate comparable phenotypic and biological properties of cCIC following Pim-1 overexpression compared with using baseline control cells with no evidence for oncogenic phenotype. Using a highly selective and continuous sensor for quantitative assessment of PIM1 kinase activity revealed a sevenfold increase in Pim-1 engineered vs. control cells. Kinase activity profiling using a panel of sensors for other kinases demonstrates elevation of IKKs), AKT/SGK, CDK1-3, p38, and ERK1/2 in addition to Pim-1 consistent with heightened kinase activity correlating with Pim-1 overexpression that may contribute to Pim-1-mediated effects. Enhancement of cellular survival, proliferation, and other beneficial properties to augment stem cell-mediated repair without oncogenic risk is a feasible, logical, and safe approach to improve efficacy and overcome current limitations inherent to cellular adoptive transfer therapeutic interventions.
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Abstract
The idiom heart of the matter refers to the focal point within a topic and, with regard to health and longevity, the heart is truly pivotal for quality of life. Societal trends worldwide continue toward increased percent body fat and decreased physical activity with coincident increases in chronic diseases including cardiovascular disease as the top global cause of death along with insulin resistance, accelerated aging, cancer. Although long-term survival rates for cardiovascular disease patients are grim, intense research efforts continue to improve both prevention and treatment options. Pharmacological interventions remain the predominant interventional strategy for mitigating progression and managing symptoms, but cellular therapies have the potential to cure or even mediate remission of cardiovascular disease. Adult stem cells are the most studied cellular therapy in both preclinical and clinical investigation. This review will focus on the advanced therapeutic strategies to augment products and methods of delivery, which many think heralds the future of clinical investigations. Advanced preclinical strategies using adult stem cells are examined to promote synergism between preclinical and clinical research, streamline implementation, and improve this imminent matter of the heart.
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Affiliation(s)
- Kathleen M Broughton
- From the Department of Biology, San Diego State University Heart Institute and the Integrated Regenerative Research Institute, CA
| | - Mark A Sussman
- From the Department of Biology, San Diego State University Heart Institute and the Integrated Regenerative Research Institute, CA.
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A novel, dual pan-PIM/FLT3 inhibitor SEL24 exhibits broad therapeutic potential in acute myeloid leukemia. Oncotarget 2018; 9:16917-16931. [PMID: 29682194 PMCID: PMC5908295 DOI: 10.18632/oncotarget.24747] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 02/24/2018] [Indexed: 11/25/2022] Open
Abstract
Fms-like tyrosine kinase 3 internal tandem duplication (FLT3-ITD) is one of the most common genetic lesions in acute myeloid leukemia patients (AML). Although FLT3 tyrosine kinase inhibitors initially exhibit clinical activity, resistance to treatment inevitably occurs within months. PIM kinases are thought to be major drivers of the resistance phenotype and their inhibition in relapsed samples restores cell sensitivity to FLT3 inhibitors. Thus, simultaneous PIM and FLT3 inhibition represents a promising strategy in AML therapy. For such reasons, we have developed SEL24-B489 - a potent, dual PIM and FLT3-ITD inhibitor. SEL24-B489 exhibited significantly broader on-target activity in AML cell lines and primary AML blasts than selective FLT3-ITD or PIM inhibitors. SEL24-B489 also demonstrated marked activity in cells bearing FLT3 tyrosine kinase domain (TKD) mutations that lead to FLT3 inhibitor resistance. Moreover, SEL24-B489 inhibited the growth of a broad panel of AML cell lines in xenograft models with a clear pharmacodynamic-pharmacokinetic relationship. Taken together, our data highlight the unique dual activity of the SEL24-B489 that abrogates the activity of signaling circuits involved in proliferation, inhibition of apoptosis and protein translation/metabolism. These results underscore the therapeutic potential of the dual PIM/FLT3-ITD inhibitor for the treatment of AML.
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10
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Baron BW, Thirman MJ, Giurcanu MC, Baron JM. Quercetin Therapy for Selected Patients with PIM1 Kinase-Positive Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma: A Pilot Study. Acta Haematol 2018; 139:132-139. [PMID: 29444501 DOI: 10.1159/000486361] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 12/15/2017] [Indexed: 12/22/2022]
Abstract
We reported that PIM1 kinase is expressed in the lymphocytes of patients with chronic lymphocytic leukemia (CLL)/small lymphocytic lymphoma (SLL). Quercetin, a naturally occurring flavonoid, is a dietary supplement and inhibits many kinases, including PIM1, in vitro. Under an Institutional Review Board-approved protocol, we performed an open-label, single-arm pilot study to evaluate the antitumor activity of quercetin in patients with CLL/SLL. Q-ForceTM chews were administered orally, 500 mg twice daily, for 3 months. Eligible patients had failed prior therapies, had had no other standard treatment, or refused other therapies. Response was assessed based on objective change in disease parameters. Patients were included if their lymphocyte counts were rising and ≥10,000/µL but not > 100,000/µL. Three patients received quercetin treatment. There was no toxicity. Two responded with stabilization of rising lymphocyte counts (p < 0.001 for each), which remained stable during their follow-up (5 and 11 months after cessation of treatment, respectively). The CLL cells in the nonresponder harbored a TP53 mutation. Although our data from this pilot translational study are based on a small sample, further studies of quercetin as a potential therapeutic agent in selected patients with CLL/SLL appear warranted.
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Affiliation(s)
- Beverly W Baron
- Department of Pathology, The University of Chicago, Chicago, Illinois, USA
| | - Michael J Thirman
- Department of Medicine, The University of Chicago, Chicago, Illinois, USA
| | - Mihai C Giurcanu
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois, USA
| | - Joseph M Baron
- Department of Medicine, The University of Chicago, Chicago, Illinois, USA
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Expression Pattern of the BCL6 and ITM2B Proteins in Normal Human Brains and in Alzheimer Disease. Appl Immunohistochem Mol Morphol 2018; 25:489-496. [PMID: 26862951 DOI: 10.1097/pai.0000000000000329] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We reported that the integral membrane 2B gene (ITM2B, also called BRI2) is a target of BCL6 repression in lymphomas. Molecular alterations in ITM2B are associated with 2 neurodegenerative diseases, Familial British and Danish dementia, and dysregulation of ITM2B function has been implicated in the pathogenesis of Alzheimer disease (AD). Although ITM2B expression has been studied, the distribution of BCL6 in human brain has not been described. Our goal is to analyze BCL6 and ITM2B localization in normal human brains and in AD by immunohistochemistry to understand their relationship. We found that, in general, they have a reciprocal relationship. BCL6 expression is present in isolated cortical neurons, granule cells in the cerebellum, scattered glial cells, and in some cells of the ependyma and choroid plexus. ITM2B is expressed in most cortical neurons, neurons of the hippocampus and dentate nucleus, cerebellar Purkinje and granule cells, and (newly described here) in focal neurons in the basal ganglia, many neurons of the thalamus and brainstem, many cells in the ependyma and choroid plexus, and in the smooth muscle of blood vessels. ITM2B expression is prominent in plaques in AD-containing dystrophic neurites but absent in neurofibrillary tangles; BCL6 expression is absent in neurofibrillary tangles and in the nuclei of cells associated with plaques in AD. It is essential to understand the localization of BCL6 and ITM2B in the brain before considering manipulation of their expression as a potential therapeutic tool.
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Matou-Nasri S, Rabhan Z, Al-Baijan H, Al-Eidi H, Yahya WB, Al Abdulrahman A, Almobadel N, Alsubeai M, Al Ghamdi S, Alaskar A, AlBalwi M, Alzahrani M, Alabdulkareem I. CD95-mediated apoptosis in Burkitt's lymphoma B-cells is associated with Pim-1 down-regulation. Biochim Biophys Acta Mol Basis Dis 2016; 1863:239-252. [PMID: 27641442 DOI: 10.1016/j.bbadis.2016.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 09/09/2016] [Accepted: 09/14/2016] [Indexed: 01/17/2023]
Abstract
B-cells of the high-grade non-Hodgkin lymphoma Burkitt's lymphoma (BL) overexpress survival oncoproteins, including the proviral integration site for Moloney murine leukaemia virus kinase (Pim)-1, and become apoptosis resistant. Activated death receptor CD95 after ligation with anti-CD95 monoclonal antibody (mAb) resulted in the regression of BL via induction of apoptosis, suggesting a decrease of survival protein expression. Here, CD95-mediated apoptotic pathways in BL B-cell lines (Raji and Daudi) following treatment with anti-CD95 mAb was investigated with the cause-and-effects on pim-1 gene expression, in comparison with leukemic cell line (K562) used as CD95-negative cells. Immunohistochemical staining for CD95 and Pim-1 was performed, and the effects of anti-CD95 mAb on apoptotic signalling using western blotting, on caspase activity and cell survival of BL B-cell and leukemic cell lines were determined. We showed that Raji cells expressed more CD95 receptors than Daudi cells. Half of each population underwent apoptosis accompanied by decreased cell viability after anti-CD95 mAb treatment. Distinct extrinsic and intrinsic CD95-mediated apoptotic pathways in Raji and Daudi cells were revealed by high caspase activity and mitochondrial outer membrane permeabilization, respectively. We observed decreased Pim-1 transcript and protein expression levels with increased heat-shock protein (Hsp)70 and decreased Hsp90 expression in anti-CD95 mAb-treated cells. Throughout the study, K562 cells did not undergo apoptosis upon anti-CD95 mAb treatment. Pim-1 knockdown following to stable transfection with plasmid vectors induced apoptosis and decreased viability of BL and K562 cells. Therefore, CD95-mediated apoptosis induces Pim-1 down-regulation in BL B-cells, but Pim-1 down-regulation cannot fully eradicate BL and leukaemia.
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Affiliation(s)
- Sabine Matou-Nasri
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Zaki Rabhan
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Haya Al-Baijan
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Hamad Al-Eidi
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Wesam Bin Yahya
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Abdelkareem Al Abdulrahman
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Nasser Almobadel
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Mona Alsubeai
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Saleh Al Ghamdi
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Ahmed Alaskar
- KAIMRC, King Saud bin-Abdulaziz University for Health Sciences (KSAU-HS), King Abdulaziz Medical City (KAMC), MNGHA, Riyadh 11426, Saudi Arabia
| | - Mohammed AlBalwi
- Pathology and Laboratory Medicine, KAMC, MNGHA, Riyadh 11426, Saudi Arabia
| | | | - Ibrahim Alabdulkareem
- Cell and Gene Therapy Group, Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard - Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia.
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The Relationship between RUVBL1 (Pontin, TIP49, NMP238) and BCL6 in Benign and Malignant Human Lymphoid Tissues. Biochem Biophys Rep 2016; 6:1-8. [PMID: 27066592 PMCID: PMC4822715 DOI: 10.1016/j.bbrep.2016.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The human BCL6 gene, which is involved in the pathogenesis of certain human lymphomas, encodes a transcriptional repressor that is needed for germinal center B cell development and T follicular helper cell differentiation. Our goal was to identify BCL6 target genes using a cell system in which BCL6 repressive effects are inhibited followed by subtractive hybridization, and we detected the RUVBL1 (Pontin, TIP49) gene as a potential target of BCL6 repression. Here we show that the BCL6 protein significantly represses RUVBL1 transcription (6.8-fold). Knockdown of endogenous BCL6 in a human B cell lymphoma line leads to significant upregulation of RUVBL1, and there is an inverse expression pattern between the BCL6 and RUVBL1 proteins in certain human lymphomas. RUVBL1 is part of the AAA+ superfamily and participates in multiple processes, including gene transcription regulation, chromatin remodeling, and DNA repair, which, if dysregulated, may promote lymphoma development. A further understanding of the relationship between RUVBL1 and BCL6 should improve our understanding of the pathogenesis of human lymphomas. BCL6, a transcriptional repressor, is deregulated in human lymphomas. The RUVBL1 (Pontin, TIP49) gene is a target of BCL6 repression. Regulation of RUVBL1 by BCL6 may be important in lymphomagenesis.
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The ITM2B (BRI2) gene is a target of BCL6 repression: Implications for lymphomas and neurodegenerative diseases. Biochim Biophys Acta Mol Basis Dis 2014; 1852:742-8. [PMID: 25557390 DOI: 10.1016/j.bbadis.2014.12.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 12/21/2014] [Accepted: 12/25/2014] [Indexed: 11/20/2022]
Abstract
The human BCL6 gene encodes a transcriptional repressor that is crucial for germinal center B cell development and T follicular helper cell differentiation. It is involved in the pathogenesis of certain human lymphomas. In an effort to identify targets of BCL6 repression, we used a previously described cell system in which BCL6 repressive effects are inhibited, followed by subtractive hybridization, and identified the integral membrane 2B gene (ITM2B, formerly BRI2) as a potential target. Here we show that BCL6 can bind to its preferential consensus binding site within the first intron of ITM2B and represses its transcription. Knockdown of endogenous BCL6 in a human B cell lymphoma line increases ITM2B expression. Further, there is an inverse relationship between the expression levels of BCL6 and ITM2B proteins in 16 human B- and T-cell lymphomas studied by immunohistochemistry. Both the BCL6 and ITM2B proteins are expressed ubiquitously. Similar to some other targets of BCL6, a short form of the ITM2B protein generated by alternative splicing induces apoptosis in hematopoietic cell lines. Molecular alterations in the ITM2B gene are associated with two neurodegenerative diseases, Familial British and Familial Danish dementia. ITM2B dysfunction also may be relevant for the development of Alzheimer's disease. Our data confirm ITM2B as a target of BCL6 repression in lymphoma. A further understanding of the genes that function as regulators of the ITM2B protein may provide insights for the development of new molecular tools not only for targeted lymphoma therapy but also for the treatment of these dementias.
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15
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Mondello P, Cuzzocrea S, Mian M. Pim kinases in hematological malignancies: where are we now and where are we going? J Hematol Oncol 2014; 7:95. [PMID: 25491234 PMCID: PMC4266197 DOI: 10.1186/s13045-014-0095-z] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 12/04/2014] [Indexed: 12/21/2022] Open
Abstract
The proviral insertion in murine (PIM) lymphoma proteins are a serine/threonine kinase family composed of three isoformes: Pim-1, Pim-2 and Pim-3. They play a critical role in the control of cell proliferation, survival, homing and migration. Recently, overexpression of Pim kinases has been reported in human tumors, mainly in hematologic malignancies. In vitro and in vivo studies have confirmed their oncogenic potential. Indeed, PIM kinases have shown to be involved in tumorgenesis, to enhance tumor growth and to induce chemo-resistance, which is why they have become an attractive therapeutic target for cancer therapy. Novel molecules inhibiting Pim kinases have been evaluated in preclinical studies, demonstrating to be effective and with a favorable toxicity profile. Given the promising results, some of these compounds are currently under investigation in clinical trials. Herein, we provide an overview of the biological activity of PIM-kinases, their role in hematologic malignancies and future therapeutic opportunities.
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Affiliation(s)
- Patrizia Mondello
- Department of Human Pathology, University of Messina, Via Consolare Valeria, 98125, Messina, Italy. .,Department of Biological and Environmental Sciences, University of Messina, Messina, Italy.
| | - Salvatore Cuzzocrea
- Department of Biological and Environmental Sciences, University of Messina, Messina, Italy.
| | - Michael Mian
- Department of Hematology, Hospital S. Maurizio, Bolzano/Bozen, Italy. .,Department of Internal Medicine V, Hematology & Oncology, Medical University Innsbruck, Innsbruck, Austria.
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16
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Bohers E, Mareschal S, Bertrand P, Viailly PJ, Dubois S, Maingonnat C, Ruminy P, Tilly H, Jardin F. Activating somatic mutations in diffuse large B-cell lymphomas: lessons from next generation sequencing and key elements in the precision medicine era. Leuk Lymphoma 2014; 56:1213-22. [DOI: 10.3109/10428194.2014.941836] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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17
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Aguirre E, Renner O, Narlik-Grassow M, Blanco-Aparicio C. Genetic Modeling of PIM Proteins in Cancer: Proviral Tagging and Cooperation with Oncogenes, Tumor Suppressor Genes, and Carcinogens. Front Oncol 2014; 4:109. [PMID: 24860787 PMCID: PMC4030178 DOI: 10.3389/fonc.2014.00109] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 04/30/2014] [Indexed: 12/24/2022] Open
Abstract
The PIM proteins, which were initially discovered as proviral insertion sites in Moloney-murine leukemia virus infection, are a family of highly homologous serine/threonine kinases that have been reported to be overexpressed in hematological malignancies and solid tumors. The PIM proteins have also been associated with metastasis and overall treatment responses and implicated in the regulation of apoptosis, metabolism, the cell cycle, and homing and migration, which makes these proteins interesting targets for anti-cancer drug discovery. The use of retroviral insertional mutagenesis and refined approaches such as complementation tagging has allowed the identification of myc, pim, and a third group of genes (including bmi1 and gfi1) as complementing genes in lymphomagenesis. Moreover, mouse modeling of human cancer has provided an understanding of the molecular pathways that are involved in tumor initiation and progression at the physiological level. In particular, genetically modified mice have allowed researchers to further elucidate the role of each of the Pim isoforms in various tumor types. PIM kinases have been identified as weak oncogenes because experimental overexpression in lymphoid tissue, prostate, and liver induces tumors at a relatively low incidence and with a long latency. However, very strong synergistic tumorigenicity between Pim1/2 and c-Myc and other oncogenes has been observed in lymphoid tissues. Mouse models have also been used to study whether the inhibition of specific PIM isoforms is required to prevent carcinogen-induced sarcomas, indicating that the absence of Pim2 and Pim3 greatly reduces sarcoma growth and bone invasion; the extent of this effect is similar to that observed in the absence of all three isoforms. This review will summarize some of the animal models that have been used to understand the isoform-specific contribution of PIM kinases to tumorigenesis.
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Affiliation(s)
- Enara Aguirre
- Biology Section, Experimental Therapeutics Programme, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Oliver Renner
- Biology Section, Experimental Therapeutics Programme, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Maja Narlik-Grassow
- Biology Section, Experimental Therapeutics Programme, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Carmen Blanco-Aparicio
- Biology Section, Experimental Therapeutics Programme, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
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18
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Baron BW, Anastasi J, Hyjek EM, Baron JM. Expression of PIM1 protein in chronic lymphocytic leukemia/small lymphocytic lymphoma. Leuk Lymphoma 2014; 55:2658-9. [PMID: 24547709 DOI: 10.3109/10428194.2014.893303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Beverly W Baron
- Department of Pathology, The University of Chicago , Chicago, IL , USA
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Wurm M, Kowalski J, Heckl D, Zhang XB, Nelson V, Beard BC, Kiem HP. Ectopic expression of HOXC6 blocks myeloid differentiation and predisposes to malignant transformation. Exp Hematol 2013; 42:114-25.e4. [PMID: 24513167 DOI: 10.1016/j.exphem.2013.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 10/07/2013] [Accepted: 10/21/2013] [Indexed: 12/24/2022]
Abstract
Insertional mutagenesis resulting from the integration of retroviral vectors has led to the discovery of many oncogenes associated with leukemia. We investigated the role of HOXC6, identified by proximal provirus integration in a large animal hematopoietic stem cell gene therapy study, for a potential involvement in hematopoietic stem cell activity and hematopoietic cell fate decision. HOXC6 was overexpressed in the murine bone marrow transplantation model and tested in a competitive repopulation assay in comparison to the known hematopoietic stem cell expansion factor, HOXB4. We have identified HOXC6 as a factor that enhances competitive repopulation capacity in vivo and colony formation in vitro. Ectopic HOXC6 expression also induced strong myeloid differentiation and expansion of granulocyte-macrophage progenitors/common myeloid progenitors (GMPs/CMPs) in vivo, resulting in myeloid malignancies with low penetrance (3 of 17 mice), likely in collaboration with Meis1 because of a provirus integration mapped to the 3' region in the malignant clone. We characterized the molecular basis of HOXC6-induced myeloid differentiation and malignant cell transformation with complementary DNA microarray analysis. Overexpression of HOXC6 induced a gene expression signature similar to several acute myeloid leukemia subtypes when compared with normal GMPs/CMPs. These results demonstrate that HOXC6 acts as a regulator in hematopoiesis and is involved in malignant transformation.
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Affiliation(s)
- Melanie Wurm
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, USA
| | - John Kowalski
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, USA
| | - Dirk Heckl
- Division of Hematology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Xiao-Bing Zhang
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, USA
| | - Veronica Nelson
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, USA
| | - Brian C Beard
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, USA.,Department of Medicine, University of Washington, Seattle, Washington, 98195, USA
| | - Hans-Peter Kiem
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, USA.,Department of Medicine, University of Washington, Seattle, Washington, 98195, USA
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Arunesh GM, Shanthi E, Krishna MH, Sooriya Kumar J, Viswanadhan VN. Small molecule inhibitors of PIM1 kinase: July 2009 to February 2013 patent update. Expert Opin Ther Pat 2013; 24:5-17. [PMID: 24131033 DOI: 10.1517/13543776.2014.848196] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
INTRODUCTION The proviral insertion in murine (PIM) lymphoma proteins for which three isoforms, PIM1, PIM2 and PIM3 have been identified, belonging to the family of serine/threonine kinases has emerged recently as an important therapeutic target for the development of selective inhibitors as the new drugs for treating hematological malignancies and solid tumors. The small molecules developed by academia and the pharmaceutical industry have steadily increased in the last few years. Several drug discovery groups focus on treating disorders, such as cancer mediated by PIM kinase, have provided preclinical evidence suggesting that PIM inhibitor provides anti-apoptotic activity, inhibit cell survival and cell proliferation. AREAS COVERED This article discloses recent reviews on research and advances published in the patent literature and scientific publications from July 2009 to February 2013, highlighting discoveries on PIM1 kinase. EXPERT OPINION Several PIM1 kinase small molecule inhibitors are now at the pre-clinical research stage, development and testing. Though nearly 40 patents emerged in the last 3 years, greater efforts towards additional designs and medicinal chemistry continues for developing clinically efficacious PIM1 inhibitors, due to the significance of the target for cancer and the potential for novel and diverse inhibitors as drug candidates.
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Affiliation(s)
- Gubbi M Arunesh
- Department of Computational Chemistry and Informatics, Jubilant Biosys Ltd, Industrial Suburb , 96, Industrial Suburb, 2nd Stage, Yeshwanthpur, Bangalore 560 022, Karnataka , India +91 80 6662 8908 ; +91 80 66628333 ;
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Baron BW, Anastasi J, Bies J, Reddy PL, Joseph L, Thirman MJ, Wroblewski K, Wolff L, Baron JM. GFI1B, EVI5, MYB--additional genes that cooperate with the human BCL6 gene to promote the development of lymphomas. Blood Cells Mol Dis 2013; 52:68-75. [PMID: 23910958 DOI: 10.1016/j.bcmd.2013.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 06/24/2013] [Accepted: 07/01/2013] [Indexed: 01/11/2023]
Abstract
The BCL6 gene, which is expressed in certain B- and T-cell human lymphomas, is involved with chromosomal rearrangements and mutations in a number of these neoplasms. Lymphomagenesis is believed to evolve through a multi-step accumulation of genetic alterations in these tumors. We used retroviral insertional mutagenesis in transgenic mice expressing the human BCL6 transgene in order to identify genes that cooperate with BCL6 during lymphomatous transformation. We previously reported PIM1 as the most frequently recurring cooperating gene in this model. We now report three newly identified cooperating genes-GFI1B, EVI5, and MYB-that we identified in the lymphomas of retroviral-injected BCL6 transgenic mice (but not in retroviral-injected non-transgenic controls); mRNA and protein expression of GFI1B and EVI5 were decreased in the murine tumors, whereas MYB mRNA and protein expression were increased or decreased. These findings correlated with protein expression in human lymphomas, both B- and T-cell. Improved therapy of lymphomas may necessitate the development of combinations of drugs that target the alterations specific to each neoplasm.
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Affiliation(s)
- Beverly W Baron
- Department of Pathology, The University of Chicago, Chicago, IL 60637, USA.
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