1
|
Kannan S, Lock I, Ozenberger BB, Jones KB. Genetic drivers and cells of origin in sarcomagenesis. J Pathol 2021; 254:474-493. [DOI: 10.1002/path.5617] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 12/01/2020] [Accepted: 01/06/2021] [Indexed: 02/06/2023]
Affiliation(s)
- Sarmishta Kannan
- Departments of Orthopaedics and Oncological Sciences Huntsman Cancer Institute, University of Utah School of Medicine Salt Lake City UT USA
| | - Ian Lock
- Departments of Orthopaedics and Oncological Sciences Huntsman Cancer Institute, University of Utah School of Medicine Salt Lake City UT USA
| | - Benjamin B Ozenberger
- Departments of Orthopaedics and Oncological Sciences Huntsman Cancer Institute, University of Utah School of Medicine Salt Lake City UT USA
| | - Kevin B Jones
- Departments of Orthopaedics and Oncological Sciences Huntsman Cancer Institute, University of Utah School of Medicine Salt Lake City UT USA
| |
Collapse
|
2
|
Raffaeli E, Cardinali L, Fianchini M, Brancorsini D, Mosca P, Marmorale C. Inflammatory myofibroblastic tumor of the transverse colon with synchronous gastrointestinal stromal tumor in a patient with ulcerative colitis: a case report. Int J Surg Case Rep 2019; 60:141-144. [PMID: 31220684 PMCID: PMC6584907 DOI: 10.1016/j.ijscr.2019.06.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 05/30/2019] [Accepted: 06/07/2019] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION Inflammatory myofibroblastic tumor (IMT) is a rare proliferative disease of uncertain etiology, characterized by the proliferation of fusate or epithelioid myofibroblasts admixed with predominantly mononuclear inflammatory cells. IMT is generally considered a benign lesion, although in some cases this neoplasm has shown an aggressive behavior in terms of local recurrence and metastasis. We report the case of a patient with a ten-year history of ulcerative colitis affected by IMT of the transverse colon and by synchronous gastrointestinal stromal tumor (GIST) of stomach. PRESENTATION OF CASE A 59-year-old woman with a ten-year history of ulcerative colitis has been admitted to our hospital with signs and symptoms of acute recurrence of ulcerative colitis: abdominal pain, diarrhea, hematochezia and rectal tenesmus. Colonoscopy showed a left colon with diffuse hyperemia, mucosal erosions and a 2-cm, irregularly shaped, polypoid lesion at the level of the transverse colon. Histopathological examination of the specimen obtained via biopsy of the polypoid lesion has revealed a mesenchymal neoplasm with uncertain characters of malignancy. Due to the severity of the inflammatory bowel disease resistant to immunosuppressive and steroid drug treatment, surgical indication was given. DISCUSSION Although the relationship between IMT and Crohn's disease has been widely reported in literature, the relationship between IMT and ulcerative colitis has never been previously described. CONCLUSION To the best of our knowledge, this is the first case of IMT associated with ulcerative colitis reported in literature and the synchronous association with a gastric GIST represents another primacy.
Collapse
Affiliation(s)
- Eugenia Raffaeli
- Department of General Surgery, Polytechnic University of Marche - Azienda Ospedaliero-Universitaria Ospedali Riuniti "Umberto I-G.M. Lancisi-G. Salesi", Ancona, Italy
| | - Luca Cardinali
- Department of Experimental and Clinical Medicine, Section of Surgical Sciences, Polytechnic University of Marche, Ancona, Italy.
| | - Maurizio Fianchini
- Department of General Surgery, Polytechnic University of Marche - Azienda Ospedaliero-Universitaria Ospedali Riuniti "Umberto I-G.M. Lancisi-G. Salesi", Ancona, Italy
| | - Donatella Brancorsini
- Section of Pathological Anatomy and Histopathology, Università Politecnica delle Marche, Azienda Ospedaliero-Universitaria Ospedali Riuniti "Umberto I-G.M. Lancisi-G. Salesi", Ancona, Italy
| | - Piergiorgio Mosca
- Digestive System Diseases, Endoscopy and Inflammatory Bowel Diseases Unit, Ospedali Riuniti, Ancona, Italy
| | - Cristina Marmorale
- Department of Experimental and Clinical Medicine, Section of Surgical Sciences, Polytechnic University of Marche, Ancona, Italy
| |
Collapse
|
3
|
Schöffski P, Sufliarsky J, Gelderblom H, Blay JY, Strauss SJ, Stacchiotti S, Rutkowski P, Lindner LH, Leahy MG, Italiano A, Isambert N, Debiec-Rychter M, Sciot R, Van Cann T, Marréaud S, Nzokirantevye A, Collette S, Wozniak A. Crizotinib in patients with advanced, inoperable inflammatory myofibroblastic tumours with and without anaplastic lymphoma kinase gene alterations (European Organisation for Research and Treatment of Cancer 90101 CREATE): a multicentre, single-drug, prospective, non-randomised phase 2 trial. THE LANCET RESPIRATORY MEDICINE 2018; 6:431-441. [PMID: 29669701 DOI: 10.1016/s2213-2600(18)30116-4] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 03/07/2018] [Accepted: 03/07/2018] [Indexed: 01/26/2023]
Abstract
BACKGROUND An inflammatory myofibroblastic tumour (IMFT) is a rare mesenchymal neoplasm characterised by anaplastic lymphoma kinase (ALK) gene rearrangements. We assessed the activity and safety of crizotinib, a tyrosine kinase inhibitor, targeting ALK in patients with advanced IMFT either with or without ALK alterations. METHODS We did a multicentre, biomarker-driven, single-drug, non-randomised, open-label, two-stage phase 2 trial (European Organisation for Research and Treatment of Cancer 90101 CREATE) at 13 study sites (five university hospitals and eight specialty clinics) in eight European countries (Belgium, France, Germany, Italy, Netherlands, Poland, Slovakia, and the UK). Eligible participants were patients aged at least 15 years with a local diagnosis of advanced or metastatic IMFT deemed incurable with surgery, radiotherapy, or systemic therapy; measurable disease; an Eastern Cooperative Oncology Group performance status of 0-2; and adequate haematological, renal, and liver function. Central reference pathology was done for confirmation of the diagnosis, and ALK positivity or negativity was assessed centrally using immunohistochemistry and fluorescence in-situ hybridisation based on archival tumour tissue and defined as ALK immunopositivity or rearrangements in at least 15% of tumour cells. Eligible ALK-positive and ALK-negative patients received oral crizotinib 250 mg twice per day administered on a continuous daily dosing schedule (the duration of each treatment cycle was 21 days) until documented disease progression, unacceptable toxicity, or patient refusal. If at least two of the first 12 eligible and assessable ALK-positive patients achieved a confirmed complete or partial response according to Response Evaluation Criteria in Solid Tumors (RECIST) 1.1, a maximum of 35 patients were to be enrolled. If at least six ALK-positive patients achieved a confirmed response, the trial would be deemed successful. The primary endpoint was the proportion of patients who achieved an objective response (ie, a complete or partial response) as per RECIST 1.1, with response confirmation assessed by the local investigator every other cycle. Activity and safety endpoints were analysed in the per-protocol population. This trial is registered with ClinicalTrials.gov, number NCT01524926. FINDINGS Between Oct 3, 2012, and April 12, 2017, we recruited and treated 20 eligible participants, 19 of whom were assessable for the primary endpoint. Median follow-up was 863 days (IQR 358-1304). Six of 12 ALK-positive patients (50%, 95% CI 21·1-78·9) and one of seven ALK-negative patients (14%, 0·0-57·9) achieved an objective response. The most common treatment-related adverse events in the 20 participants were nausea (11 [55%]), fatigue (9 [45%]), blurred vision (nine [45%]), vomiting (seven [35%]), and diarrhoea (seven [35%]). Eight serious adverse events occurred in five patients: pneumonia, fever of unknown cause, a heart attack with increased creatinine and possible sepsis, an abdominal abscess with acute renal insufficiency, and a QT prolongation. INTERPRETATION With 50% of participants with ALK-positive tumours achieving an objective response, crizotinib met the prespecified criteria for success in this trial. The results presented here support the rationale for inhibiting ALK in patients with IMFT. Crizotinib could be considered as the standard of care for patients with locally advanced or metastatic ALK-positive IMFT who do not qualify for curative surgery. FUNDING The European Organisation for Research and Treatment of Cancer and Pfizer.
Collapse
Affiliation(s)
- Patrick Schöffski
- Department of General Medical Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium; Laboratory of Experimental Oncology, Department of Oncology, KU Leuven, Leuven, Belgium.
| | | | - Hans Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, Netherlands
| | - Jean-Yves Blay
- Department of Medical Oncology, Centre Léon Bérard/Université Claude Bernard Lyon Institute, Lyon, France
| | - Sandra J Strauss
- Department of Oncology, University College London Hospitals NHS Trust, London, UK
| | - Silvia Stacchiotti
- Department of Medical Oncology, IRCCS Fondazione Istituto Nazionale Tumori, Milano, Italy
| | - Piotr Rutkowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute-Oncology Center, Warsaw, Poland
| | - Lars H Lindner
- Klinikum der Universität München, Medizinische Klinik III, Campus Grosshadern, Munich, Germany
| | | | | | - Nicolas Isambert
- Department of Medical Oncology, Centre Georges François Leclerc, Dijon, France
| | | | - Raf Sciot
- Department of Pathology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Thomas Van Cann
- Department of General Medical Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium; Laboratory of Experimental Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Sandrine Marréaud
- European Organisation for Research and Treatment of Cancer, Brussels, Belgium
| | | | - Sandra Collette
- European Organisation for Research and Treatment of Cancer, Brussels, Belgium
| | - Agnieszka Wozniak
- Laboratory of Experimental Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
| |
Collapse
|
4
|
Hoareau-Aveilla C, Meggetto F. Crosstalk between microRNA and DNA Methylation Offers Potential Biomarkers and Targeted Therapies in ALK-Positive Lymphomas. Cancers (Basel) 2017; 9:cancers9080100. [PMID: 28771164 PMCID: PMC5575603 DOI: 10.3390/cancers9080100] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/04/2017] [Accepted: 07/28/2017] [Indexed: 12/13/2022] Open
Abstract
The discovery of microRNA (miRNA) has provided new and powerful tools for studying the mechanism, diagnosis and treatment of human cancers. The down-regulation of tumor suppressive miRNA by hypermethylation of CpG island (CpG is shorthand for 5′-C-phosphate-G-3′, that is, cytosine and guanine separated by only one phosphate) is emerging as a common hallmark of cancer and appears to be involved in drug resistance. This review discusses the role of miRNA and DNA methylation in drug resistance mechanisms and highlights their potential as anti-cancer therapies in Anaplastic Lymphoma Kinase (ALK)-positive lymphomas. These are a sub-type of non-Hodgkin’s lymphomas that predominantly affect children and young adults and are characterized by the expression of the nucleophosmin (NPM)/ALK chimeric oncoprotein. Dysregulation of miRNA expression and regulation has been shown to affect several signaling pathways in ALK carcinogenesis and control tumor growth, both in cell lines and mouse models. These data suggest that the modulation of DNA methylation and/or the expression of these miRNA could serve as new biomarkers and have potential therapeutic applications for ALK-positive malignancies.
Collapse
Affiliation(s)
- Coralie Hoareau-Aveilla
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France.
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France.
- CNRS, ERL5294 CRCT, F-31000 Toulouse, France.
- Laboratoire d'Excellence Toulouse Cancer-TOUCAN, F-31024 Toulouse, France.
| | - Fabienne Meggetto
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France.
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France.
- CNRS, ERL5294 CRCT, F-31000 Toulouse, France.
- Laboratoire d'Excellence Toulouse Cancer-TOUCAN, F-31024 Toulouse, France.
| |
Collapse
|
5
|
3D-QSAR and molecular fragment replacement study on diaminopyrimidine and pyrrolotriazine ALK inhibitors. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.03.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
6
|
Mehta B, Mascarenhas L, Zhou S, Wang L, Venkatramani R. Inflammatory myofibroblastic tumors in childhood. Pediatr Hematol Oncol 2013; 30:640-5. [PMID: 23988029 DOI: 10.3109/08880018.2013.816810] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Inflammatory myofibroblastic tumor (IMT) is a rare tumor of intermediate malignant potential that can occur anywhere in the body. Surgical resection is the principal treatment. We report on nine children diagnosed with IMT at our institution over a 10-year period. Presenting symptoms were reflective of tumor location. Complete surgical resection was curative. Local recurrence occurred in the presence of involved surgical margins. One patient with metastatic disease achieved long-term remission with chemotherapy alone. Severe inflammatory response and death occurred in one patient. The 3-year event free and overall survivals (OS) were 58 ± 20% and 89 ± 10% respectively.
Collapse
Affiliation(s)
- Bhakti Mehta
- 1Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, California, USA
| | | | | | | | | |
Collapse
|
7
|
Xie HZ, Lan H, Pan YL, Zou J, Wang ZR, Li LL, Huang Q, Zhang H, Yang SY. Identification of novel anaplastic lymphoma kinase (ALK) inhibitors using a common feature pharmacophore model derived from known ligands crystallized with ALK. Chem Biol Drug Des 2012; 81:175-84. [PMID: 23107363 DOI: 10.1111/cbdd.12084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this investigation, a common feature pharmacophore model of anaplastic lymphoma kinase inhibitors was developed based on several known anaplastic lymphoma kinase inhibitors that were co-crystallized with anaplastic lymphoma kinase. The established pharmacophore model Hypo1 was carefully validated and then adopted to screen two in silico chemical databases, Specs (202 408 compounds) and Enamine (1 105 894 compounds), for retrieving novel anaplastic lymphoma kinase inhibitors. The hit compounds were further filtered using a fast bumping-check tool and molecular docking. Finally, 25 compounds were selected and purchased from market. The bioactivity of these compounds was firstly measured at the cellular level against a typical anaplastic lymphoma kinase mutant-driven cancer cell line, Karpas299. And six of them showed a good anti-viability activity. The kinase inhibitory potency against the recombinant human anaplastic lymphoma kinase kinase was tested to the most active compound at the cellular level, T0508-5181 (from Specs), which gave a half maximal inhibitory concentration (IC(50)) of 5.3 μM.
Collapse
Affiliation(s)
- Huan-Zhang Xie
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Sichuan 610041, China
| | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Sugawara E, Togashi Y, Kuroda N, Sakata S, Hatano S, Asaka R, Yuasa T, Yonese J, Kitagawa M, Mano H, Ishikawa Y, Takeuchi K. Identification of anaplastic lymphoma kinase fusions in renal cancer: large-scale immunohistochemical screening by the intercalated antibody-enhanced polymer method. Cancer 2012; 118:4427-36. [PMID: 22252991 DOI: 10.1002/cncr.27391] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Revised: 10/31/2011] [Accepted: 11/10/2011] [Indexed: 01/10/2023]
Abstract
BACKGROUND Several promising molecular-targeted drugs are used for advanced renal cancers. However, complete remission is rarely achieved, because none of the drugs targets a key molecule that is specific to the cancer, or is associated with "oncogene addiction" (dependence on one or a few oncogenes for cell survival) of renal cancer. Recently, an anaplastic lymphoma kinase (ALK) fusion, vinculin-ALK, has been reported in pediatric renal cell carcinoma (RCC) cases who have a history of sickle cell trait. In this context, ALK inhibitor therapy would constitute a therapeutic advance, as has previously been demonstrated with lung cancer, inflammatory myofibroblastic tumors, and anaplastic large cell lymphomas. METHODS Anti-ALK immunohistochemistry was used to screen 355 tumor tissues, using the intercalated antibody-enhanced polymer (iAEP) method. The cohort consisted of 255 clear cell RCCs, 32 papillary RCCs, 34 chromophobe RCCs, 6 collecting duct carcinomas, 10 unclassified RCCs, 6 sarcomatoid RCCs, and 12 other tumors. RESULTS Two patients (36- and 53-year-old females) were positive for ALK as determined by iAEP immunohistochemistry. Using 5'- rapid amplification of complementary DNA ends, we detected TPM3-ALK and EML4-ALK in these tumors. The results of this study were confirmed by fluorescence in situ hybridization assays. The 2 ALK-positive RCCs were unclassified (mixed features of papillary, mucinous cribriform, and solid patterns with rhabdoid cells) and papillary subtype. They comprised 2.3% of non-clear cell RCCs (2 of 88) and 3.7% of non-clear cell and nonchromophobe RCCs (2 of 54). CONCLUSIONS The results of this study indicate that ALK fusions also exist in adult RCC cases without uncommon backgrounds. These findings confirm the potential of ALK inhibitor therapy for selected cases of RCC.
Collapse
|
9
|
Dejean E, Renalier MH, Foisseau M, Agirre X, Joseph N, de Paiva GR, Al Saati T, Soulier J, Desjobert C, Lamant L, Prósper F, Felsher DW, Cavaillé J, Prats H, Delsol G, Giuriato S, Meggetto F. Hypoxia-microRNA-16 downregulation induces VEGF expression in anaplastic lymphoma kinase (ALK)-positive anaplastic large-cell lymphomas. Leukemia 2011; 25:1882-90. [PMID: 21778999 DOI: 10.1038/leu.2011.168] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The anaplastic lymphoma kinase (ALK), tyrosine kinase oncogene is implicated in a wide variety of cancers. In this study we used conditional onco-ALK (NPM-ALK and TPM3-ALK) mouse MEF cell lines (ALK+ fibroblasts) and transgenic models (ALK+ B-lymphoma) to investigate the involvement and regulation of angiogenesis in ALK tumor development. First, we observed that ALK expression leads to downregulation of miR-16 and increased Vascular Endothelial Growth Factor (VEGF) levels. Second, we found that modification of miR-16 levels in TPM3-ALK MEF cells greatly affected VEGF levels. Third, we demonstrated that miR-16 directly interacts with VEGF mRNA at the 3'-untranslated region and that the regulation of VEGF by miR-16 occurs at the translational level. Fourth, we showed that expression of both the ALK oncogene and hypoxia-induced factor 1α (HIF1α) is a prerequisite for miR-16 downregulation. Fifth, in vivo, miR-16 gain resulted in reduced angiogenesis and tumor growth. Finally, we highlighted an inverse correlation between the levels of miR-16 and VEGF in human NPM-ALK+ Anaplastic Large Cell Lymphomas (ALCL). Altogether, our results demonstrate, for the first time, the involvement of angiogenesis in ALK+ ALCL and strongly suggest an important role for hypoxia-miR-16 in regulating VEGF translation.
Collapse
Affiliation(s)
- E Dejean
- Centre de Recherches en Cancérologie de Toulouse, INSERM-UMR 1037-Université Toulouse III Paul Sabatier, Toulouse, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Chabot S, Jabrane-Ferrat N, Bigot K, Tabiasco J, Provost A, Golzio M, Noman MZ, Giustiniani J, Bellard E, Brayer S, Aguerre-Girr M, Meggetto F, Giuriato S, Malecaze F, Galiacy S, Jaïs JP, Chose O, Kadouche J, Chouaib S, Teissié J, Abitbol M, Bensussan A, Le Bouteiller P. A novel antiangiogenic and vascular normalization therapy targeted against human CD160 receptor. ACTA ACUST UNITED AC 2011; 208:973-86. [PMID: 21482699 PMCID: PMC3092350 DOI: 10.1084/jem.20100810] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A monoclonal anti-CD160 antibody inhibits the growth of new vessels in pathological ocular and tumor neoangiogenesis but not in healthy tissues. Angiogenesis plays an essential role in several diseases of the eye and in the growth of solid tumors, but existing antiangiogenic therapies have limited benefits in several cases. We report the antiangiogenic effects of a monoclonal antibody, CL1-R2, in several animal models of neovascularization. CL1-R2 recognizes human CD160, a membrane receptor which is conserved in various mammal species. We show that CD160 is expressed on the endothelial cells of newly formed blood vessels in human colon carcinoma and mouse B16 melanoma but not in vessels of healthy tissues. CL1-R2 reduced fibroblast growth factor 2–induced neovascularization in the rabbit cornea, in a mouse model of oxygen-induced retinopathy, and in a mouse Matrigel plug assay. Treatment of B16 melanoma-bearing mice with CL1-R2 combined with cyclophosphamide chemotherapy caused regression of the tumor vasculature and normalization of the remaining vessels as shown by Doppler ultrasonography, intravital microscopy, and histology. These studies validate CD160 as a potential new target in cases of human pathological ocular and tumor neoangiogenesis that do not respond or become resistant to existing antiangiogenic drugs.
Collapse
Affiliation(s)
- Sophie Chabot
- Institut National de la Santé et de la Recherche Médicale U1043, F-31300 Toulouse, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
MiR-29a down-regulation in ALK-positive anaplastic large cell lymphomas contributes to apoptosis blockade through MCL-1 overexpression. Blood 2011; 117:6627-37. [PMID: 21471522 DOI: 10.1182/blood-2010-09-301994] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Although deregulated expression of specific microRNAs (miRNAs) has been described in solid cancers and leukemias, little evidence of miRNA deregulation has been reported in ALK-positive (ALK(+)) anaplastic large cell lymphomas (ALCL). These tumors overexpress the major antiapoptotic protein myeloid cell leukemia 1 (MCL-1), a situation that could compensate for the lack of BCL-2. We report that ALK(+) ALCL cell lines and biopsy specimens (n = 20) express a low level of miR-29a and that this down-modulation requires an active NPM-ALK kinase. Murine models (transgenic mice and mouse embryonic fibroblast [MEF] cells), which allow conditional NPM-ALK fusion protein expression, showed an increase of miR-29a expression in the absence of NPM-ALK. Concordant results were observed after the abolition of NPM-ALK kinase activity (siALK or PF-2341066) in NPM-ALK(+) ALCL cell lines. In addition, we showed that low expression of miR-29a, probably through methylation repression, plays an important regulatory role in MCL-1 overexpression that could promote tumor cell survival by inhibiting apoptosis. Enforced miR-29a expression was found to modulate apoptosis through inhibition of MCL-1 expression in ALCL cell lines and in a xenografted model, with a concomitant tumor growth reduction. Thus, synthetic miR-29a represents a potential new tool to affect tumorigenesis in these lymphomas.
Collapse
|
12
|
|
13
|
Butrynski JE, D'Adamo DR, Hornick JL, Dal Cin P, Antonescu CR, Jhanwar SC, Ladanyi M, Capelletti M, Rodig SJ, Ramaiya N, Kwak EL, Clark JW, Wilner KD, Christensen JG, Jänne PA, Maki RG, Demetri GD, Shapiro GI. Crizotinib in ALK-rearranged inflammatory myofibroblastic tumor. N Engl J Med 2010; 363:1727-33. [PMID: 20979472 PMCID: PMC3014292 DOI: 10.1056/nejmoa1007056] [Citation(s) in RCA: 612] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Inflammatory myofibroblastic tumor (IMT) is a distinctive mesenchymal neoplasm characterized by a spindle-cell proliferation with an inflammatory infiltrate. Approximately half of IMTs carry rearrangements of the anaplastic lymphoma kinase (ALK) locus on chromosome 2p23, causing aberrant ALK expression. We report a sustained partial response to the ALK inhibitor crizotinib (PF-02341066, Pfizer) in a patient with ALK-translocated IMT, as compared with no observed activity in another patient without the ALK translocation. These results support the dependence of ALK-rearranged tumors on ALK-mediated signaling and suggest a therapeutic strategy for genomically identified patients with the aggressive form of this soft-tissue tumor. (Funded by Pfizer and others; ClinicalTrials.gov number, NCT00585195.).
Collapse
|
14
|
Conditional TPM3-ALK and NPM-ALK transgenic mice develop reversible ALK-positive early B-cell lymphoma/leukemia. Blood 2010; 115:4061-70. [DOI: 10.1182/blood-2008-06-163386] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
NPM-ALK (nucleophosmin-anaplastic lymphoma kinase) and TPM3-ALK (nonmuscular tropomyosin 3-anaplastic lymphoma kinase) are oncogenic tyrosine kinases implicated in the pathogenesis of human ALK-positive lymphoma. We report here the development of novel conditional mouse models for ALK-induced lymphomagenesis, with the use of the tetracycline regulatory system under the control of the EμSRα enhancer/promoter. The expression of either oncogene resulted in the arrest of the differentiation of early B cells and lymphomagenesis. We also observed the development of skin keratoacanthoma lesions, probably because of aberrant ALK expression in keratinocytes. The inactivation of the ALK oncogene on doxycycline treatment was sufficient to induce sustained regression of both hematopoietic tumors and skin disease. Importantly, treatment with the specific ALK inhibitor (PF-2341066) also reversed the pathologic states, showing the value of these mouse models for the validation of ALK tyrosine kinase inhibitors. Thus, our results show (1) that NPM-ALK and TPM3-ALK oncogenes are sufficient for lymphoma/leukemia development and required for tumor maintenance, hence validating ALK as potentially effective therapeutic target; and (2) for the first time, in vivo, the equal tumorigenic potential of the NPM-ALK and TPM3-ALK oncogenic tyrosine kinases. Our models offer a new tool to investigate in vivo the molecular mechanisms associated with ALK-induced lymphoproliferative disorders.
Collapse
|