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Adolfo Ferrando

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https://www.readbyqxmd.com/read/29556024/the-subclonal-complexity-of-stil-tal1-t-cell-acute-lymphoblastic-leukaemia
#1
Caroline L Furness, Marcela B Mansur, Victoria J Weston, Luca Ermini, Frederik W van Delft, Sarah Jenkinson, Rosemary Gale, Christine J Harrison, Maria S Pombo-de-Oliveira, Marta Sanchez-Martin, Adolfo A Ferrando, Pamela Kearns, Ian Titley, Anthony M Ford, Nicola E Potter, Mel Greaves
Single-cell genetics were used to interrogate clonal complexity and the sequence of mutational events in STIL-TAL1+ T-ALL. Single-cell multicolour FISH was used to demonstrate that the earliest detectable leukaemia subclone contained the STIL-TAL1 fusion and copy number loss of 9p21.3 (CDKN2A/CDKN2B locus), with other copy number alterations including loss of PTEN occurring as secondary subclonal events. In three cases, multiplex qPCR and phylogenetic analysis were used to produce branching evolutionary trees recapitulating the snapshot history of T-ALL evolution in this leukaemia subtype, which confirmed that mutations in key T-ALL drivers, including NOTCH1 and PTEN, were subclonal and reiterative in distinct subclones...
March 20, 2018: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29398449/rhoa-g17v-induces-t-follicular-helper-cell-specification-and-promotes-lymphomagenesis
#2
Jose R Cortes, Alberto Ambesi-Impiombato, Lucile Couronné, S Aidan Quinn, Christine S Kim, Ana C da Silva Almeida, Zachary West, Laura Belver, Marta Sanchez Martin, Laurianne Scourzic, Govind Bhagat, Olivier A Bernard, Adolfo A Ferrando, Teresa Palomero
Angioimmunoblastic T cell lymphoma (AITL) is an aggressive tumor derived from malignant transformation of T follicular helper (Tfh) cells. AITL is characterized by loss-of-function mutations in Ten-Eleven Translocation 2 (TET2) epigenetic tumor suppressor and a highly recurrent mutation (p.Gly17Val) in the RHOA small GTPase. Yet, the specific role of RHOA G17V in AITL remains unknown. Expression of Rhoa G17V in CD4+ T cells induces Tfh cell specification; increased proliferation associated with inducible co-stimulator (ICOS) upregulation and increased phosphoinositide 3-kinase (PI3K) and mitogen-activated protein kinase signaling...
February 12, 2018: Cancer Cell
https://www.readbyqxmd.com/read/29342136/clonal-evolution-mechanisms-in-nt5c2-mutant-relapsed-acute-lymphoblastic-leukaemia
#3
Gannie Tzoneva, Chelsea L Dieck, Koichi Oshima, Alberto Ambesi-Impiombato, Marta Sánchez-Martín, Chioma J Madubata, Hossein Khiabanian, Jiangyan Yu, Esme Waanders, Ilaria Iacobucci, Maria Luisa Sulis, Motohiro Kato, Katsuyoshi Koh, Maddalena Paganin, Giuseppe Basso, Julie M Gastier-Foster, Mignon L Loh, Renate Kirschner-Schwabe, Charles G Mullighan, Raul Rabadan, Adolfo A Ferrando
Relapsed acute lymphoblastic leukaemia (ALL) is associated with resistance to chemotherapy and poor prognosis. Gain-of-function mutations in the 5'-nucleotidase, cytosolic II (NT5C2) gene induce resistance to 6-mercaptopurine and are selectively present in relapsed ALL. Yet, the mechanisms involved in NT5C2 mutation-driven clonal evolution during the initiation of leukaemia, disease progression and relapse remain unknown. Here we use a conditional-and-inducible leukaemia model to demonstrate that expression of NT5C2(R367Q), a highly prevalent relapsed-ALL NT5C2 mutation, induces resistance to chemotherapy with 6-mercaptopurine at the cost of impaired leukaemia cell growth and leukaemia-initiating cell activity...
January 17, 2018: Nature
https://www.readbyqxmd.com/read/29216040/targeted-cellular-immunotherapy-for-t-cell-malignancies
#4
Teresa Palomero, Adolfo Ferrando
No abstract text is available yet for this article.
December 7, 2017: Nature Medicine
https://www.readbyqxmd.com/read/29158376/leukemia-specific-delivery-of-mutant-notch1-targeted-therapy
#5
Giovanni Roti, Jun Qi, Samuel Kitara, Marta Sanchez-Martin, Amy Saur Conway, Anthony C Varca, Angela Su, Lei Wu, Andrew L Kung, Adolfo A Ferrando, James E Bradner, Kimberly Stegmaier
On-target drug delivery remains a challenge in cancer precision medicine; it is difficult to deliver a targeted therapy to cancer cells without incurring toxicity to normal tissues. The SERCA (sarco-endoplasmic reticulum Ca2+ ATPase) inhibitor thapsigargin inhibits mutant NOTCH1 receptors compared with wild type in T cell acute lymphoblastic leukemia (T-ALL), but its administration is predicted to be toxic in humans. Leveraging the addiction of ALL to folic acid, we conjugated folate to an alcohol derivative of thapsigargin via a cleavable ester linkage...
January 2, 2018: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29083320/pharmacological-inhibition-of-the-transcription-factor-pu-1-in-leukemia
#6
Iléana Antony-Debré, Ananya Paul, Joana Leite, Kelly Mitchell, Hye Mi Kim, Luis A Carvajal, Tihomira I Todorova, Kenneth Huang, Arvind Kumar, Abdelbasset A Farahat, Boris Bartholdy, Swathi-Rao Narayanagari, Jiahao Chen, Alberto Ambesi-Impiombato, Adolfo A Ferrando, Ioannis Mantzaris, Evripidis Gavathiotis, Amit Verma, Britta Will, David W Boykin, W David Wilson, Gregory Mk Poon, Ulrich Steidl
The transcription factor PU.1 is often impaired in patients with acute myeloid leukemia (AML). Here, we used AML cells that already had low PU.1 levels and further inhibited PU.1 using either RNA interference or, to our knowledge, first-in-class small-molecule inhibitors of PU.1 that we developed specifically to allosterically interfere with PU.1-chromatin binding through interaction with the DNA minor groove that flanks PU.1-binding motifs. These small molecules of the heterocyclic diamidine family disrupted the interaction of PU...
December 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28985206/clonal-evolution-in-leukemia
#7
REVIEW
Adolfo A Ferrando, Carlos López-Otín
Human leukemias are liquid malignancies characterized by diffuse infiltration of the bone marrow by transformed hematopoietic progenitors. The accessibility of tumor cells obtained from peripheral blood or through bone marrow aspirates, together with recent advances in cancer genomics and single-cell molecular analysis, have facilitated the study of clonal populations and their genetic and epigenetic evolution over time with unprecedented detail. The results of these analyses challenge the classic view of leukemia as a clonal homogeneous diffuse tumor and introduce a more complex and dynamic scenario...
October 6, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28314854/common-nonmutational-notch1-activation-in-chronic-lymphocytic-leukemia
#8
Giulia Fabbri, Antony B Holmes, Mara Viganotti, Claudio Scuoppo, Laura Belver, Daniel Herranz, Xiao-Jie Yan, Yasmine Kieso, Davide Rossi, Gianluca Gaidano, Nicholas Chiorazzi, Adolfo A Ferrando, Riccardo Dalla-Favera
Activating mutations of NOTCH1 (a well-known oncogene in T-cell acute lymphoblastic leukemia) are present in ∼4-13% of chronic lymphocytic leukemia (CLL) cases, where they are associated with disease progression and chemorefractoriness. However, the specific role of NOTCH1 in leukemogenesis remains to be established. Here, we report that the active intracellular portion of NOTCH1 (ICN1) is detectable in ∼50% of peripheral blood CLL cases lacking gene mutations. We identify a "NOTCH1 gene-expression signature" in CLL cells, and show that this signature is significantly enriched in primary CLL cases expressing ICN1, independent of NOTCH1 mutation...
April 4, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28174276/synergistic-antileukemic-therapies-in-notch1-induced-t-all
#9
Marta Sanchez-Martin, Alberto Ambesi-Impiombato, Yue Qin, Daniel Herranz, Mukesh Bansal, Tiziana Girardi, Elisabeth Paietta, Martin S Tallman, Jacob M Rowe, Kim De Keersmaecker, Andrea Califano, Adolfo A Ferrando
The Notch1 gene is a major oncogenic driver and therapeutic target in T-cell acute lymphoblastic leukemia (T-ALL). However, inhibition of NOTCH signaling with γ-secretase inhibitors (GSIs) has shown limited antileukemic activity in clinical trials. Here we performed an expression-based virtual screening to identify highly active antileukemic drugs that synergize with NOTCH1 inhibition in T-ALL. Among these, withaferin A demonstrated the strongest cytotoxic and GSI-synergistic antileukemic effects in vitro and in vivo...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28115368/the-notch1-myc-highway-toward-t-cell-acute-lymphoblastic-leukemia
#10
REVIEW
Marta Sanchez-Martin, Adolfo Ferrando
T-cell acute lymphoblastic leukemia (T-ALL) is a highly proliferative hematologic malignancy that results from the transformation of immature T-cell progenitors. Aberrant cell growth and proliferation in T-ALL lymphoblasts are sustained by activation of strong oncogenic drivers promoting cell anabolism and cell cycle progression. Oncogenic NOTCH signaling, which is activated in more than 65% of T-ALL patients by activating mutations in the NOTCH1 gene, has emerged as a major regulator of leukemia cell growth and metabolism...
March 2, 2017: Blood
https://www.readbyqxmd.com/read/28062691/activating-mutations-and-translocations-in-the-guanine-exchange-factor-vav1-in-peripheral-t-cell-lymphomas
#11
Francesco Abate, Ana C da Silva-Almeida, Sakellarios Zairis, Javier Robles-Valero, Lucile Couronne, Hossein Khiabanian, S Aidan Quinn, Mi-Yeon Kim, Maria Antonella Laginestra, Christine Kim, Danilo Fiore, Govind Bhagat, Miguel Angel Piris, Elias Campo, Izidore S Lossos, Olivier A Bernard, Giorgio Inghirami, Stefano Pileri, Xosé R Bustelo, Raul Rabadan, Adolfo A Ferrando, Teresa Palomero
Peripheral T-cell lymphomas (PTCLs) are a heterogeneous group of non-Hodgkin lymphomas frequently associated with poor prognosis and for which genetic mechanisms of transformation remain incompletely understood. Using RNA sequencing and targeted sequencing, here we identify a recurrent in-frame deletion (VAV1 Δ778-786) generated by a focal deletion-driven alternative splicing mechanism as well as novel VAV1 gene fusions (VAV1-THAP4, VAV1-MYO1F, and VAV1-S100A7) in PTCL. Mechanistically these genetic lesions result in increased activation of VAV1 catalytic-dependent (MAPK, JNK) and non-catalytic-dependent (nuclear factor of activated T cells, NFAT) VAV1 effector pathways...
January 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27451956/the-genetics-and-mechanisms-of-t-cell-acute-lymphoblastic-leukaemia
#12
REVIEW
Laura Belver, Adolfo Ferrando
T cell acute lymphoblastic leukaemia (T-ALL) is an aggressive haematological malignancy derived from early T cell progenitors. In recent years genomic and transcriptomic studies have uncovered major oncogenic and tumour suppressor pathways involved in T-ALL transformation and identified distinct biological groups associated with prognosis. An increased understanding of T-ALL biology has already translated into new prognostic biomarkers and improved animal models of leukaemia and has opened opportunities for the development of targeted therapies for the treatment of this disease...
July 25, 2016: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/27335110/tumor-suppressor-hipk2-regulates-malignant-growth-via-phosphorylation-of-notch1
#13
Eun-Jung Ann, Mi-Yeon Kim, Ji-Hye Yoon, Ji-Seon Ahn, Eun-Hye Jo, Hye-Jin Lee, Hyun-Woo Lee, Hyeok-Gu Kang, Dong Wook Choi, Kyung-Hee Chun, Ji Shin Lee, Cheol Yong Choi, Adolfo A Ferrando, Keesook Lee, Hee-Sae Park
The receptor Notch1 plays an important role in malignant progression of many cancers, but its regulation is not fully understood. In this study, we report that the kinase HIPK2 is responsible for facilitating the Fbw7-dependent proteasomal degradation of Notch1 by phosphorylating its intracellular domain (Notch1-IC) within the Cdc4 phosphodegron motif. Notch1-IC expression was higher in cancer cells than normal cells. Under genotoxic stress, Notch1-IC was phosphorylated constitutively by HIPK2 and was maintained at a low level through proteasomal degradation...
August 15, 2016: Cancer Research
https://www.readbyqxmd.com/read/27259858/mmp-25-metalloprotease-regulates-innate-immune-response-through-nf-%C3%AE%C2%BAb-signaling
#14
Clara Soria-Valles, Ana Gutiérrez-Fernández, Fernando G Osorio, Dido Carrero, Adolfo A Ferrando, Enrique Colado, M Soledad Fernández-García, Elena Bonzon-Kulichenko, Jesús Vázquez, Antonio Fueyo, Carlos López-Otín
Matrix metalloproteases (MMPs) regulate innate immunity acting over proinflammatory cytokines, chemokines, and other immune-related proteins. MMP-25 (membrane-type 6-MMP) is a membrane-bound enzyme predominantly expressed in leukocytes whose biological function has remained largely unknown. We have generated Mmp25-deficient mice to elucidate the in vivo function of this protease. These mutant mice are viable and fertile and do not show any spontaneous phenotype. However, Mmp25-null mice exhibit a defective innate immune response characterized by low sensitivity to bacterial LPS, hypergammaglobulinemia, and reduced secretion of proinflammatory molecules...
July 1, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27149388/a-case-of-t-cell-acute-lymphoblastic-leukemia-relapsed-as-myeloid-acute-leukemia
#15
Maddalena Paganin, Barbara Buldini, Giuseppe Germano, Elena Seganfreddo, Annamaria di Meglio, Elisa Magrin, Francesca Grillo, Martina Pigazzi, Carmelo Rizzari, Giovanni Cazzaniga, Hossein Khiabanian, Teresa Palomero, Raul Rabadan, Adolfo A Ferrando, Giuseppe Basso
A 4-year-old male with the diagnosis of T-cell acute lymphoblastic leukemia (T-ALL) relapsed after 19 months with an acute myeloid leukemia (AML). Immunoglobulin and T-cell receptor gene rearrangements analyses reveal that both leukemias were rearranged with a clonal relationship between them. Comparative genomic hybridization (Array-CGH) and whole-exome sequencing analyses of both samples suggest that this leukemia may have originated from a common T/myeloid progenitor. The presence of homozygous deletion of p16/INK4A, p14/ARF, p15/INK4B, and heterozygous deletion of WT1 locus remained stable in the leukemia throughout phenotypic switch, revealing that this AML can be genetically associated to T-ALL...
September 2016: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/26864725/targeting-notch1-in-t-all-starving-the-dragon
#16
EDITORIAL
Daniel Herranz, Adolfo A Ferrando
No abstract text is available yet for this article.
2016: Cell Cycle
https://www.readbyqxmd.com/read/26551667/the-mutational-landscape-of-cutaneous-t-cell-lymphoma-and-s%C3%A3-zary-syndrome
#17
COMPARATIVE STUDY
Ana Carolina da Silva Almeida, Francesco Abate, Hossein Khiabanian, Estela Martinez-Escala, Joan Guitart, Cornelis P Tensen, Maarten H Vermeer, Raul Rabadan, Adolfo Ferrando, Teresa Palomero
Sézary syndrome is a leukemic and aggressive form of cutaneous T cell lymphoma (CTCL) resulting from the malignant transformation of skin-homing central memory CD4(+) T cells. Here we performed whole-exome sequencing of tumor-normal sample pairs from 25 patients with Sézary syndrome and 17 patients with other CTCLs. These analyses identified a distinctive pattern of somatic copy number alterations in Sézary syndrome, including highly prevalent chromosomal deletions involving the TP53, RB1, PTEN, DNMT3A and CDKN1B tumor suppressors...
December 2015: Nature Genetics
https://www.readbyqxmd.com/read/26443624/tumor-specific-hsp90-inhibition-as-a-therapeutic-approach-in-jak-mutant-acute-lymphoblastic-leukemias
#18
MULTICENTER STUDY
Nicole Kucine, Sachie Marubayashi, Neha Bhagwat, Efthymia Papalexi, Priya Koppikar, Marta Sanchez Martin, Lauren Dong, Marty S Tallman, Elisabeth Paietta, Kai Wang, Jie He, Doron Lipson, Phil Stephens, Vince Miller, Jacob M Rowe, Julie Teruya-Feldstein, Charles G Mullighan, Adolfo A Ferrando, Andrei Krivtsov, Scott Armstrong, Laura Leung, Stefan O Ochiana, Gabriela Chiosis, Ross L Levine, Maria Kleppe
The development of the dual Janus kinase 1/2 (JAK1/2) inhibitor ruxolitinib for the treatment of myeloproliferative neoplasms (MPNs) has led to studies of ruxolitinib in other clinical contexts, including JAK-mutated acute lymphoblastic leukemia (ALL). However, the limited ability of JAK inhibition to induce molecular or clinicopathological responses in MPNs suggests a need for development of better therapies for JAK kinase-dependent malignancies. Here, we demonstrate that heat shock protein 90 (HSP90) inhibition using a purine-scaffold HSP90 inhibitor in early clinical development is an effective therapeutic approach in JAK-dependent ALL and can overcome persistence to JAK-inhibitor therapy in ALL cells...
November 26, 2015: Blood
https://www.readbyqxmd.com/read/26390244/metabolic-reprogramming-induces-resistance-to-anti-notch1-therapies-in-t-cell-acute-lymphoblastic-leukemia
#19
Daniel Herranz, Alberto Ambesi-Impiombato, Jessica Sudderth, Marta Sánchez-Martín, Laura Belver, Valeria Tosello, Luyao Xu, Agnieszka A Wendorff, Mireia Castillo, J Erika Haydu, Javier Márquez, José M Matés, Andrew L Kung, Stephen Rayport, Carlos Cordon-Cardo, Ralph J DeBerardinis, Adolfo A Ferrando
Activating mutations in NOTCH1 are common in T cell acute lymphoblastic leukemia (T-ALL). Here we identify glutaminolysis as a critical pathway for leukemia cell growth downstream of NOTCH1 and a key determinant of the response to anti-NOTCH1 therapies in vivo. Mechanistically, inhibition of NOTCH1 signaling in T-ALL induces a metabolic shutdown, with prominent inhibition of glutaminolysis and triggers autophagy as a salvage pathway supporting leukemia cell metabolism. Consequently, inhibition of glutaminolysis and inhibition of autophagy strongly and synergistically enhance the antileukemic effects of anti-NOTCH1 therapy in mice harboring T-ALL...
October 2015: Nature Medicine
https://www.readbyqxmd.com/read/26200345/non-coding-recurrent-mutations-in-chronic-lymphocytic-leukaemia
#20
Xose S Puente, Silvia Beà, Rafael Valdés-Mas, Neus Villamor, Jesús Gutiérrez-Abril, José I Martín-Subero, Marta Munar, Carlota Rubio-Pérez, Pedro Jares, Marta Aymerich, Tycho Baumann, Renée Beekman, Laura Belver, Anna Carrio, Giancarlo Castellano, Guillem Clot, Enrique Colado, Dolors Colomer, Dolors Costa, Julio Delgado, Anna Enjuanes, Xavier Estivill, Adolfo A Ferrando, Josep L Gelpí, Blanca González, Santiago González, Marcos González, Marta Gut, Jesús M Hernández-Rivas, Mónica López-Guerra, David Martín-García, Alba Navarro, Pilar Nicolás, Modesto Orozco, Ángel R Payer, Magda Pinyol, David G Pisano, Diana A Puente, Ana C Queirós, Víctor Quesada, Carlos M Romeo-Casabona, Cristina Royo, Romina Royo, María Rozman, Nuria Russiñol, Itziar Salaverría, Kostas Stamatopoulos, Hendrik G Stunnenberg, David Tamborero, María J Terol, Alfonso Valencia, Nuria López-Bigas, David Torrents, Ivo Gut, Armando López-Guillermo, Carlos López-Otín, Elías Campo
Chronic lymphocytic leukaemia (CLL) is a frequent disease in which the genetic alterations determining the clinicobiological behaviour are not fully understood. Here we describe a comprehensive evaluation of the genomic landscape of 452 CLL cases and 54 patients with monoclonal B-lymphocytosis, a precursor disorder. We extend the number of CLL driver alterations, including changes in ZNF292, ZMYM3, ARID1A and PTPN11. We also identify novel recurrent mutations in non-coding regions, including the 3' region of NOTCH1, which cause aberrant splicing events, increase NOTCH1 activity and result in a more aggressive disease...
October 22, 2015: Nature
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