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Pigazzi M, Ferrari G, Masetti R, Falini B, Martinolli F, Basso G, Biondi A, Pession A, Cazzaniga G. Low prevalence of IDH1 gene mutation in childhood AML in Italy. Leukemia 2010; 25:173-4. [PMID: 20944672 DOI: 10.1038/leu.2010.229] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Holm C, Dornseifer U, Sturtz G, Basso G, Schuster T, Ninkovic M. The intrinsic transit time of free microvascular flaps: clinical and prognostic implications. Microsurgery 2010; 30:91-6. [PMID: 19790185 DOI: 10.1002/micr.20708] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Microscope-integrated indocyanine green near-infrared videoangiography (ICGA) is a new method for the intraoperative assessment of vascular flow through microvascular anastomoses. The intrinsic transit time (ITT) describes the time period from the dye appears at the arterial anastomosis (t(1)) till it reaches the suture line of the venous anastomosis (t(2)). As the transit time reflects blood flow velocity within the flap, prolonged ITT might correlate with low blood flow and a higher rate of postoperative thrombosis. We performed a clinical trial evaluating the association between intraoperative free flap transit time and early anastomotic complications in elective microsurgery. METHODS One hundred consecutive patients undergoing elective microsurgical procedures underwent intraoperative ICG angiography (ICGA). In patients with anastomotic patency, angiograms were retrospectively reviewed and the intrinsic transit time was calculated. Postoperative outcome was registered and compared with the ITT. End points included early reexploration surgery and flap loss within the first 24 hours after surgery. RESULTS Fourteen patients were excluded from the study due to technical anastomotic failure. The overall flap failure rate was 6% (5/86); the incidence of early re-exploration surgery was 10% (9/86). With a median of 31 seconds patients with an uneventful postoperative course showed significantly shorter ITTs than patients with flap loss or early postoperative reexploration (median: >120 seconds). An optimal cut-off value of ITT > 50 seconds was determined to be strongestly associated with a significantly increased risk of at least one positive end point. CONCLUSIONS This study demonstrates a significant predictive value of the intrinsic flap transit time for the development of flap compromise and early re-exploration surgery.
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Conter V, Aricò M, Basso G, Biondi A, Barisone E, Messina C, Parasole R, De Rossi G, Locatelli F, Pession A, Santoro N, Micalizzi C, Citterio M, Rizzari C, Silvestri D, Rondelli R, Lo Nigro L, Ziino O, Testi AM, Masera G, Valsecchi MG. Long-term results of the Italian Association of Pediatric Hematology and Oncology (AIEOP) Studies 82, 87, 88, 91 and 95 for childhood acute lymphoblastic leukemia. Leukemia 2009; 24:255-64. [PMID: 20016536 DOI: 10.1038/leu.2009.250] [Citation(s) in RCA: 132] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We analyzed the long-term outcome of 4865 patients treated in Studies 82, 87, 88, 91 and 95 for childhood acute lymphoblastic leukemia (ALL) of the Italian Association of Pediatric Hematology and Oncology (AIEOP). Treatment was characterized by progressive intensification of systemic therapy and reduction of cranial radiotherapy. A progressive improvement of results with reduction of isolated central nervous system relapse rate was obtained. Ten-year event-free survival increased from 53% in Study 82 to 72% in Study 95, whereas survival improved from 64 to 82%. Since 1991, all patients were treated according to Berlin-Frankfurt-Muenster (BFM) ALL treatment strategy. In Study 91, reduced treatment intensity (25%) yielded inferior results, but intensification of maintenance with high-dose (HD)-L-asparaginase (randomized) allowed to compensate for this disadvantage; in high-risk patients (HR, 15%), substitution of intensive polychemotherapy blocks for conventional BFM backbone failed to improve results. A marked improvement of results was obtained in HR patients when conventional BFM therapy was intensified with three polychemotherapy blocks and double delayed intensification (Study 95). The introduction of minimal residual disease monitoring and evaluation of common randomized questions by AIEOP and BFM groups in the protocol AIEOP-BFM-ALL 2000 are expected to further ameliorate treatment of children with ALL.
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Bardini M, Spinelli R, Bungaro S, Mangano E, Corral L, Cifola I, Fazio G, Giordan M, Basso G, De Rossi G, Biondi A, Battaglia C, Cazzaniga G. DNA copy-number abnormalities do not occur in infant ALL with t(4;11)/MLL-AF4. Leukemia 2009; 24:169-76. [PMID: 19907438 DOI: 10.1038/leu.2009.203] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The pathogenesis of infant acute lymphoblastic leukemia (ALL) is still not well defined. Short latency to leukemia and very high concordance rate for ALL in Mixed-Lineage Leukemia (MLL)-positive infant twins suggest that the MLL rearrangement itself could be sufficient for overt leukemia. Attempts to generate a suitable mouse model for MLL-AF4-positive ALL did not thoroughly resolve the issue of whether cooperating mutations are required to reduce latency and to generate overt leukemia in vivo. In this study, we applied single-nucleotide polymorphism array technology to perform genomic profiling of 28 infant ALL cases carrying t(4;11) to detect MLL-cooperating aberrations hidden to conventional techniques and to gain new insights into infant ALL pathogenesis. In contrast to pediatric, adolescent and adult ALL cases, the MLL rearrangement in infant ALL is associated with an exceptionally low frequency of copy-number abnormalities, thus confirming the unique nature of this disease. By contrast, additional genetic aberrations are acquired at disease relapse. Small-segmental uniparental disomy traits were frequently detected, mostly constitutional, and widely distributed throughout the genome. It can be argued that the MLL rearrangement as a first hit, rather than inducing the acquisition of additional genetic lesions, has a major role to drive and hasten the onset of leukemia.
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Pistollato F, Abbadi S, Rampazzo E, Viola G, Della Puppa A, Cavallini L, Panchision DM, te Kronnie G, Basso G. Glioblastoma-derived cells exhibit differential responses to glycolysis inhibition under hypoxia. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e13031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e13031 It has been suggested that oxygen tension is a crucial component of the brain tumor niche, as hypoxia positively correlates with tumor aggressiveness and over-activity of hypoxia inducible factor-1α (HIF-1α) reinforces tumor progression. Furthermore, hypoxia has been implicated in the regulation of several signaling pathways (Notch, BMP), angiogenesis and importantly, glucose metabolism. Here we investigate the effects mediated by in vitro glycolysis inhibition by using 2-deoxyglucose (2-DG) in glioblastoma (GBM) derived cells maintained under two different oxygen tensions, a lowered oxygen tension (2%) versus a higher non-physiological (20%). GBM account for 50% of all gliomas and arise after age 50 in most patients and it has been seen that younger patients tend to have a better prognosis than the elderly. Our results show that adult GBM displaying a highly immature phenotype manifested the highest resistance to glucose deprivation. Furthermore, increase of multi-drug resistant cell fraction, described as side population, occurred following 2-DG treatment, but only under hypoxia. Neuronal committed precursors were selected by 2-DG, but these effects were mitigated by hypoxia. Also, hypoxia inhibits the mitochondria-controlled apoptosis induced by 2-DG, by conferring cell resistance through progressive activation of pro-survival NF-kB and induction of tumor cell autophagy. Importantly, HIF-1α level reduction and proline hydroxylase 2 (PHD2) upregulation occurred following 2-DG treatment even under hypoxia, and this may depend on reactive oxygen species reduction. These results indicate differences in tumor cells behavior that may be predictive of cell response to therapy aiming to limit glucose uptake or glucose metabolism. No significant financial relationships to disclose.
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Meyer LH, Zangrando A, Eckhoff SM, Queudeville M, Vendramini E, Basso G, te Kronnie G, Debatin K. Association of time to leukemia (TTL) in NOD/SCID mice with expression of apoptosis regulators in pediatric ALL. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.10042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
10042 Background: Acute lymphoblastic leukemia (ALL) is the most frequent malignant disease in childhood. Although advances in therapy have led to improved long term survival, relapse remains a major challenge. In a recent study we transplanted pediatric leukemia samples from newly diagnosed BCP-ALL patients into NOD/SCID mice. Time to leukemia (TTL) was analyzed for each patient sample as time from transplant to overt leukemia in the recipients. Patients whose leukemia cells engrafted rapidly showed a clearly inferior relapse free survival in contrast to patient samples with prolonged in vivo growth. Multivariate analysis showed an almost 45- fold increased risk for relapse in patients with short TTL. Methods: Gene expression profiles of ALL samples (N = 14) with short versus long TTL in the xenograft model were analyzed using a human whole genome array (Affymetrix U133 Plus 2.0) correlating gene expression values (relative expression) to the time from transplant to manifestation of leukemia in the NOD/SCID mice (TTL, in weeks) by quantitative traits analysis (QTA). Results: Among 5 genes significantly correlated (Spearman correlation, P < .0001) XIAP-associated factor 1 (XAF1) was found to be up-regulated in patients with long TTL. XAF1 abrogates the inhibitory effect of XIAP on caspase-3 thereby sensitizing for apoptosis. In accordance to this caspase-3 activation was also found to be up-regulated in patients with long TTL. Patient samples exhibiting a short time to overt leukemia in the xenotransplant model associated with poor relapse free survival showed down-regulated XAF1 and impaired caspase-3 activation leading to decreased apoptosis of the leukemia cells. Conclusions: Taken together, we used a novel approach directly correlating gene expression values to time from transplant to overt leukemia (TTL) identifying the apoptosis regulator XAF1 to be associated with poor outcome of patients. Small XIAP-inhibiting molecules can be used to substitute the lacking inhibitory effect of down-regulated XAF1 in these poor responding pediatric ALL patients. No significant financial relationships to disclose.
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Pigazzi M, Manara E, Baron E, Beghin A, Basso G. The inducible cyclic adenosine 3’,5’-monophosphate early repressor (ICER) enhances drug sensitivity in acute myeloid leukemia. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e22045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e22045 Background: The Inducible Cyclic Adenosine 3’,5’-monophosphate early repressor (ICER) is a transcription factor that principally counteracts the cAMP response element binding protein (CREB) activity. CREB was previously demonstrated to be overexpressed in acute leukemia, whereas ICER was found rapidly degradated being unable to control gene transcription. ICER exogenous expression was demonstrated to repress CREB targets preventing leukemia progression. We hypothesized that ICER restoration deserves a special consideration for playing a role in CREB oncogenic feature and in modeling leukemic cell phenotype. Methods: We constructed an expression vector for ICER and induced its exogenous expression in HL60 cells (HL60+ICER). We monitored transcription and translation of a series of genes involved in different pathways by quantitative gene expression and western blot analysis. We investigate ICER's role in cell death after treatment with chemotherapic drugs. Results: We revealed that ICER was able to control gene expression in leukemia, principally of genes involved in cell death and survival. In particular, we focused on DUSP1 and DUSP4 phosphatases which were found significantly repressed. HL60+ICER after being treated with drugs increased apoptosis. Cell cycle analyses revealed a block in G2 phase, a lowered cell proliferation and clonogenic potential with respect to HL60 treated at the same conditions. DUSPs downstream targets (IL6, RB, RAS) were lowered expressed and p38 constitutively phosphorylated confirming their role in mediating cellular stress. ICER driven apoptosis was found to be caspases mediated. An enhanced activity of p38 was observed in treated HL60+ICER, and by the use of specific p38 inhibitors apoptosis decreased. Other possible apoptotic pathways (AKT, ERK, JNK) were excluded because found severely disrupted. Conclusions: Finally, we described an enhanced sensibility to drugs in HL60 induced by ICER exogenous expression and that p38 stress signaling pathway is the direct target of this phenomenon. The ability of ICER to modify leukemic cells phenotype respect to chemotherapeutic treatment gave an important information for targets and therapeutic possibilities. No significant financial relationships to disclose.
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Bonvini P, Zorzi E, Mussolin L, Monaco G, Basso G, Rosolen A. 295 POSTER Growth inhibition and induction of apoptosis in anaplastic large cell lymphoma cells treated with the CDK inhibitor flavopiridol. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)72229-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Zorzi E, Bonvini P, Mussolin L, Basso G, Rosolen A. 233 POSTER Bortezomib and Flavopiridol combination induces down regulation of Mcl-1, mitochondrial permeabilization and cell death in ALCL cells. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)72165-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Paganin M, Zecca M, Fabbri G, Polato K, Biondi A, Rizzari C, Locatelli F, Basso G. Minimal residual disease is an important predictive factor of outcome in children with relapsed ‘high-risk’ acute lymphoblastic leukemia. Leukemia 2008; 22:2193-200. [DOI: 10.1038/leu.2008.227] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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61
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Accordi B, Espina V, Lissandron V, Milani G, Te Kronnie G, Liotta LA, Petricoin III EF, Basso G, Garaci E. Phosphoproteomic profiling of pediatric B-ALL patients with MLL rearrangements. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.10001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Flohr T, Schrauder A, Cazzaniga G, Panzer-Grümayer R, van der Velden V, Fischer S, Stanulla M, Basso G, Niggli FK, Schäfer BW, Sutton R, Koehler R, Zimmermann M, Valsecchi MG, Gadner H, Masera G, Schrappe M, van Dongen JJM, Biondi A, Bartram CR. Minimal residual disease-directed risk stratification using real-time quantitative PCR analysis of immunoglobulin and T-cell receptor gene rearrangements in the international multicenter trial AIEOP-BFM ALL 2000 for childhood acute lymphoblastic leukemia. Leukemia 2008; 22:771-82. [PMID: 18239620 DOI: 10.1038/leu.2008.5] [Citation(s) in RCA: 291] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Detection of minimal residual disease (MRD) is the most sensitive method to evaluate treatment response and one of the strongest predictors of outcome in childhood acute lymphoblastic leukemia (ALL). The 10-year update on the I-BFM-SG MRD study 91 demonstrates stable results (event-free survival), that is, standard risk group (MRD-SR) 93%, intermediate risk group (MRD-IR) 74%, and high risk group (MRD-HR) 16%. In multicenter trial AIEOP-BFM ALL 2000, patients were stratified by MRD detection using quantitative PCR after induction (TP1) and consolidation treatment (TP2). From 1 July 2000 to 31 October 2004, PCR target identification was performed in 3341 patients: 2365 (71%) patients had two or more sensitive targets (< or =10(-4)), 671 (20%) patients revealed only one sensitive target, 217 (6%) patients had targets with lower sensitivity, and 88 (3%) patients had no targets. MRD-based risk group assignment was feasible in 2594 (78%) patients: 40% were classified as MRD-SR (two sensitive targets, MRD negativity at both time points), 8% as MRD-HR (MRD > or =10(-3) at TP2), and 52% as MRD-IR. The remaining 823 patients were stratified according to clinical risk features: HR (n=108) and IR (n=715). In conclusion, MRD-PCR-based stratification using stringent criteria is feasible in almost 80% of patients in an international multicenter trial.
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Portincasa A, Gozzo G, Parisi D, Annacontini L, Campanale A, Basso G, Maiorella A. Microsurgical treatment of injury to peripheral nerves in upper and lower limbs: a critical review of the last 8 years. Microsurgery 2007; 27:455-62. [PMID: 17596860 DOI: 10.1002/micr.20382] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Nerve injuries to the upper and inferior limbs represent a common event due both to home and working accidents. Minor traumas can lead to severe disabilities if a wrong treatment is carried out. From 1997 to 2005, 920 patients were observed with a total of 1,200 major or minor nerves injuries operated. In 852 cases acute lesions treated. In 68 patients we reviewed old injuries. In 707 patients direct nerve suture and in 145 patients nerve grafts were carried out. One to 8 years follow up observed. Different protocols were adopted according to the injury: simple cut, complex lesion or surgical revision. Results were evaluated during the follow up period with different models: motor evaluation in six levels (BMRC), sensitive evaluation in five levels (HIGHET), and global evaluation with four grades (from the worst to the best result). Nerve healing is a complex biological phenomenon influenced by many parameters related both to the patient characteristics and nerve lesion. Functional and esthetical outcomes vary also according to: age, cultural and economic condition, health status, and smoking. Post operative rehabilitation is mandatory to obtain an acceptable functional result. Nerve injuries to the upper and inferior limbs represent a challenge for the microsurgeon. Ultimate success in nerve surgery is judged by functional as well as cosmetic parameters. Only patients with the appropriate indication should be operated and always by a skilled surgeon.
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Pigazzi M, Ricotti E, Germano G, Faggian D, Arico M, Basso G. cAMP response element binding protein (CREB) overexpression CREB has been described as critical for leukemia progression. Haematologica 2007; 92:1435-7. [DOI: 10.3324/haematol.11122] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Zangrando A, Intini F, te Kronnie G, Basso G. Validation of NG2 antigen in identifying BP-ALL patients with MLL rearrangements using qualitative and quantitative flow cytometry: a prospective study. Leukemia 2007; 22:858-61. [PMID: 17851550 DOI: 10.1038/sj.leu.2404952] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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66
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Viola G, Fortunato E, Cecconet L, Disarò S, Basso G. Induction of apoptosis in Jurkat cells by photoexcited psoralen derivatives: Implication of mitochondrial dysfunctions and caspases activation. Toxicol In Vitro 2007; 21:211-6. [PMID: 17084583 DOI: 10.1016/j.tiv.2006.09.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2006] [Revised: 08/24/2006] [Accepted: 09/14/2006] [Indexed: 10/24/2022]
Abstract
The prevailing form of cell death in lymphocytes exposed to psoralen plus UVA light (PUVA), was investigated. We studied the well known drug 8-methoxypsoralen (8-MOP) and an angular derivatives: angelicin (ANG). We evaluated the induction of apoptosis in a human tumor T-cell line (Jurkat). Both compounds provoke a significant induction of apoptosis at 24h from irradiation as demonstrated by a remarkable percentage of cells Annexin-V positive. We investigated the effects of the psoralen derivatives upon UVA irradiation on the cell cycle. The flow cytometric analysis of propidium labeled cells indicates that treatment induces, in a dose dependent manner, a massive accumulation of cells, for both compounds, in G2-S phase after 24h from the irradiation. We have focused our attention on the mitochondrial functionality after irradiation in the presence of psoralen derivatives. We evaluated, by flow cytometry, (i) the mitochondrial potential (Deltapsi(mt)), (ii) the production of reactive oxygen species (ROS) and (iii) the oxidation of cardiolipin, a phospholipid restricted to the inner mitochondrial membrane. Furthermore the activation of caspases -3, -8 and -9 was also investigated. The obtained data indicated that, upon UVA irradiation, the two compounds induce a strong decrease in mitochondrial functions and activate caspase-3, -8 and -9.
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Pigullo S, Haupt R, Dufour C, Di Michele P, Valsecchi MG, Basso G, Rizzari C, Biondi A, Lanciotti M. Are genotypes of glutathione S-transferase superfamily a risk factor for childhood acute lymphoblastic leukemia? Results of an Italian case-control study. Leukemia 2007; 21:1122-4. [PMID: 17315021 DOI: 10.1038/sj.leu.2404617] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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van der Velden VHJ, Panzer-Grümayer ER, Cazzaniga G, Flohr T, Sutton R, Schrauder A, Basso G, Schrappe M, Wijkhuijs JM, Konrad M, Bartram CR, Masera G, Biondi A, van Dongen JJM. Optimization of PCR-based minimal residual disease diagnostics for childhood acute lymphoblastic leukemia in a multi-center setting. Leukemia 2007; 21:706-13. [PMID: 17287857 DOI: 10.1038/sj.leu.2404535] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Minimal residual disease (MRD) diagnostics is used for treatment stratification in childhood acute lymphoblastic leukemia. We aimed to identify and solve potential problems in multicenter MRD studies to achieve and maintain consistent results between the AIEOP/BFM ALL-2000 MRD laboratories. As the dot-blot hybridization method was replaced by the real-time quantitative polymerase chain reaction (RQ-PCR) method during the treatment protocol, special attention was given to the comparison of MRD data obtained by both methods and to the reproducibility of RQ-PCR data. Evaluation of all key steps in molecular MRD diagnostics identified several pitfalls that resulted in discordant MRD results. In particular, guidelines for RQ-PCR data interpretation appeared to be crucial for obtaining concordant MRD results. The experimental variation of the RQ-PCR was generally less than three-fold, but logically became larger at low MRD levels below the reproducible sensitivity of the assay (<10(-4)). Finally, MRD data obtained by dot-blot hybridization were comparable to those obtained by RQ-PCR analysis (r(2)=0.74). In conclusion, MRD diagnostics using RQ-PCR analysis of immunoglobulin/T-cell receptor gene rearrangements is feasible in multicenter studies but requires standardization; particularly strict guidelines for interpretation of RQ-PCR data are required. We further recommend regular quality control for laboratories performing MRD diagnostics in international treatment protocols.
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Bonvini P, Zorzi E, Basso G, Rosolen A. Bortezomib-mediated 26S proteasome inhibition causes cell-cycle arrest and induces apoptosis in CD-30+ anaplastic large cell lymphoma. Leukemia 2007; 21:838-42. [PMID: 17268529 DOI: 10.1038/sj.leu.2404528] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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70
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Jansen MWJC, Corral L, van der Velden VHJ, Panzer-Grümayer R, Schrappe M, Schrauder A, Marschalek R, Meyer C, den Boer ML, Hop WJC, Valsecchi MG, Basso G, Biondi A, Pieters R, van Dongen JJM. Immunobiological diversity in infant acute lymphoblastic leukemia is related to the occurrence and type of MLL gene rearrangement. Leukemia 2007; 21:633-41. [PMID: 17268512 DOI: 10.1038/sj.leu.2404578] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The aim of this study was to identify immunobiological subgroups in 133 infant acute lymphoblastic leukemia (ALL) cases as assessed by their immunophenotype, immunoglobulin (Ig) and T-cell receptor (TCR) gene rearrangement pattern, and the presence of mixed lineage leukemia (MLL) rearrangements. About 70% of cases showed the pro-B-ALL immunophenotype, whereas the remaining cases were common ALL and pre-B-ALL. MLL translocations were found in 79% of infants, involving MLL-AF4 (41%), MLL-ENL (18%), MLL-AF9 (11%) or another MLL partner gene (10%). Detailed analysis of Ig/TCR rearrangement patterns revealed IGH, IGK and IGL rearrangements in 91, 21 and 13% of infants, respectively. Cross-lineage TCRD, TCRG and TCRB rearrangements were found in 46, 17 and 10% of cases, respectively. As compared to childhood precursor-B-ALL, Ig/TCR rearrangements in infant ALL were less frequent and more oligoclonal. MLL-AF4 and MLL-ENL-positive infants demonstrated immature rearrangements, whereas in MLL-AF9-positive leukemias more mature rearrangements predominated. The immature Ig/TCR pattern in infant ALL correlated with young age at diagnosis, CD10 negativity and predominantly with the presence and the type of MLL translocation. The high frequency of immature and oligoclonal Ig/TCR rearrangements is probably caused by early (prenatal) oncogenic transformation in immature B-lineage progenitor cells with germline Ig/TCR genes combined with a short latency period.
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Nigro LL, Sainati L, Leszl A, Mirabile E, Spinelli M, Consarino C, Di Cataldo A, Magro S, Felix CA, Basso G. Acute differentiated dendritic cell leukemia: a variant form of pediatric acute myeloid leukemia with MLL translocation. Leukemia 2007; 21:360-2. [PMID: 17205059 DOI: 10.1038/sj.leu.2404480] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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D'Amico G, Bonamino M, Dander E, Marin V, Basso G, Balduzzi A, Biagi E, Biondi A. T cells stimulated by CD40L positive leukemic blasts-pulsed dendritic cells meet optimal functional requirements for adoptive T-cell therapy. Leukemia 2006; 20:2015-24. [PMID: 16990769 DOI: 10.1038/sj.leu.2404390] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Adoptive T-cell immunotherapy may provide complementary therapy for childhood B-cell precursor acute lymphoblastic leukemia (BCP-ALL). In this study, we have analyzed the functional characteristics of anti-BCP-ALL effector T cells generated by co-culturing T lymphocytes and dendritic cells (DC) from allogeneic human stem cell transplantation (HSCT) donors. After 21-day co-culture with DC pulsed with CD40L+ apoptotic BCP-ALL blasts, T cells presented with both effector and central memory phenotype, and showed high and specific cytotoxic activity against leukemic cells (average lysis = 77%), mostly mediated by CD8+ T cells. Noticeably, growth of CD4 T cells was maintained (45% of total cells), which actively produced Th1 cytokines (IFN-gamma, TNF-alpha, IL-2), but not IL-4, IL-5 and IL-10. Anti-BCP-ALL T cells expressed CD49d and CXCR4 (implicated in the recruitment to bone marrow), and CD62L and CCR7 (involved in the migration to lymphoid organs). In accordance with this profile, T cells significantly migrated in response to the chemokines CXCL12 and CCL19. In conclusion, stimulation of T cells with CD40L+BCP-ALL cells-loaded DC not only elicited the generation of potent and specific anti-leukemic cytotoxic effectors, but also the differentiation of specific and functional Th-1 CD4 lymphocytes. These effectors are fully equipped to reach leukemia-infiltrated tissues and have characteristics to support and orchestrate the anti-tumor immune-response.
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Zangrando A, Luchini A, Buldini B, Rondelli R, Pession A, Bicciato S, te Kronnie G, Basso G. Immunophenotype signature as a tool to define prognostic subgroups in childhood acute myeloid leukemia. Leukemia 2006; 20:888-91. [PMID: 16525493 DOI: 10.1038/sj.leu.2404175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Longoni D, Sainati L, Basso G, Biondi A, Fenu S, Spinelli M, Testi A, Zecca M, Bugarin C, Cipolli M, Danesino C, Di Meglio A, Tridello G, Leszl A, Mastella G, Pasquali F, Petaros P, Poli F, Varotto S. Hematological and genetic follow-up of 38 italian shwachman-diamond syndrome (SDS) patients. Leuk Res 2006. [DOI: 10.1016/s0145-2126(06)80034-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ziino O, D'Urbano LE, De Benedetti F, Conter V, Barisone E, De Rossi G, Basso G, Aricò M. The MIF-173G/C polymorphism does not contribute to prednisone poor response in vivo in childhood acute lymphoblastic leukemia. Leukemia 2006; 19:2346-7. [PMID: 16208413 DOI: 10.1038/sj.leu.2403973] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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