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Incorvaia L, De Biase D, Nannini M, Fumagalli E, Vincenzi B, De Luca I, Brando C, Perez A, Pantaleo MA, Gasperoni S, D’Ambrosio L, Grignani G, Maloberti T, Pedone E, Bazan Russo TD, Mazzocca A, Algeri L, Dimino A, Barraco N, Serino R, Gristina V, Galvano A, Bazan V, Russo A, Badalamenti G. KIT/PDGFRA Variant Allele Frequency as Prognostic Factor in Gastrointestinal Stromal Tumors (GISTs): Results From a Multi-Institutional Cohort Study. Oncologist 2024; 29:e141-e151. [PMID: 37463014 PMCID: PMC10769785 DOI: 10.1093/oncolo/oyad206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/09/2023] [Indexed: 01/07/2024] Open
Abstract
BACKGROUND The patient selection for optimal adjuvant therapy in gastrointestinal stromal tumors (GISTs) is provided by nomogram based on tumor size, mitotic index, tumor location, and tumor rupture. Although mutational status is not currently used to risk assessment, tumor genotype showed a prognostic influence on natural history and tumor relapse. Innovative measures, such as KIT/PDGFRA-mutant-specific variant allele frequency (VAF) levels detection from next-generation sequencing (NGS), may act as a surrogate of tumor burden and correlate with prognosis and overall survival of patients with GIST, helping the choice for adjuvant treatment. PATIENTS AND METHODS This was a multicenter, hospital-based, retrospective/prospective cohort study to investigate the prognostic role of KIT or PDGFRA-VAF of GIST in patients with radically resected localized disease. In the current manuscript, we present the results from the retrospective phase of the study. RESULTS Two-hundred (200) patients with GIST between 2015 and 2022 afferent to 6 Italian Oncologic Centers in the EURACAN Network were included in the study. The receiver operating characteristic (ROC) curves analysis was used to classify "low" vs. "high" VAF values, further normalized on neoplastic cellularity (nVAF). When RFS between the low and high nVAF groups were compared, patients with GIST with KIT/PDGFRA nVAF > 50% showed less favorable RFS than patients in the group of nVAF ≤ 50% (2-year RFS, 72.6% vs. 93%, respectively; P = .003). The multivariable Cox regression model confirmed these results. In the homogeneous sub-population of intermediate-risk, patients with KIT-mutated GIST, the presence of nVAF >50% was statistically associated with higher disease recurrence. CONCLUSION In our study, we demonstrated that higher nVAF levels were independent predictors of GIST prognosis and survival in localized GIST patients with tumors harboring KIT or PDGFRA mutations. In the cohort of intermediate-risk patients, nVAF could be helpful to improve prognostication and the use of adjuvant imatinib.
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Affiliation(s)
- Lorena Incorvaia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Dario De Biase
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
- Solid Tumor Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Margherita Nannini
- Department of Experimental, Diagnostic and Specialized Medicine, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Elena Fumagalli
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Bruno Vincenzi
- Department of Medical Oncology, Campus Biomedico University of Rome, Rome, Italy
| | - Ida De Luca
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Chiara Brando
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessandro Perez
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Maria A Pantaleo
- Department of Experimental, Diagnostic and Specialized Medicine, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Silvia Gasperoni
- Department of Oncology and Robotic Surgery, Translational Oncology Unit, University Hospital Careggi, Firenze, Italy
| | - Lorenzo D’Ambrosio
- Division of Medical Oncology, Candiolo Cancer Institute, FPO - IRCCS, Candiolo, TO, Italy
| | - Giovanni Grignani
- Division of Medical Oncology, Candiolo Cancer Institute, FPO - IRCCS, Candiolo, TO, Italy
| | - Thais Maloberti
- Solid Tumor Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - Erika Pedone
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Tancredi Didier Bazan Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessandro Mazzocca
- Department of Medical Oncology, Campus Biomedico University of Rome, Rome, Italy
| | - Laura Algeri
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessandra Dimino
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Nadia Barraco
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Roberta Serino
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Valerio Gristina
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Antonio Galvano
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Viviana Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (BIND), Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Antonio Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Giuseppe Badalamenti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
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Fanale D, Corsini LR, Bono M, Randazzo U, Barraco N, Brando C, Cancelliere D, Contino S, Giurintano A, Magrin L, Pedone E, Perez A, Piraino P, Pivetti A, Giovanni ED, Russo TDB, Prestifilippo O, Gennusa V, Pantuso G, Russo A, Bazan V. Clinical relevance of exosome-derived microRNAs in Ovarian Cancer: Looking for new tumor biological fingerprints. Crit Rev Oncol Hematol 2024; 193:104220. [PMID: 38036154 DOI: 10.1016/j.critrevonc.2023.104220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/17/2023] [Accepted: 11/24/2023] [Indexed: 12/02/2023] Open
Abstract
Specific tumor-derived extracellular vesicles, called exosomes, are considered as potential key players in cross-talk between immune system and tumor microenvironment in several solid tumors. Different studies highlighted the clinical relevance of exosomes in ovarian cancer (OC) for their role in early diagnosis, prognosis, chemoresistance, targeted therapy. The exosomes are nanosize vesicles carrying lipids, proteins, and nucleic acids. In particular, exosomes shuttle a wide spectrum of microRNAs (miRNAs) able to induce phenotypic reprogramming of target cells, contributing to tumor progression. In this review, we will discuss the promising role of miRNAs shuttled by exosomes, called exosomal miRNAs (exo-miRNAs), as potential biomarkers for early detection, tumour progression and metastasis, prognosis, and response to therapy in OC women, in order to search for new potential biological fingerprints able to better characterize the evolution of this malignancy and provide a clinically relevant non-invasive approach useful for adopting, in future, personalized therapeutic strategies.
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Affiliation(s)
- Daniele Fanale
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Lidia Rita Corsini
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Marco Bono
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Ugo Randazzo
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Nadia Barraco
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Chiara Brando
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Daniela Cancelliere
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Silvia Contino
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Ambra Giurintano
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Luigi Magrin
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Erika Pedone
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Alessandro Perez
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Paola Piraino
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Alessia Pivetti
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Emilia Di Giovanni
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Tancredi Didier Bazan Russo
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Ornella Prestifilippo
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Vincenzo Gennusa
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Gianni Pantuso
- Division of General and Oncological Surgery, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Antonio Russo
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy.
| | - Viviana Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy
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Incorvaia L, Perez A, Marchetti C, Brando C, Gristina V, Cancelliere D, Pivetti A, Contino S, Di Giovanni E, Barraco N, Bono M, Giurintano A, Bazan Russo TD, Gottardo A, Cutaia S, Pedone E, Peri M, Corsini LR, Fanale D, Galvano A, Scambia G, Badalamenti G, Russo A, Bazan V. Theranostic biomarkers and PARP-inhibitors effectiveness in patients with non-BRCA associated homologous recombination deficient tumors: Still looking through a dirty glass window? Cancer Treat Rev 2023; 121:102650. [PMID: 37939446 DOI: 10.1016/j.ctrv.2023.102650] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/16/2023] [Accepted: 10/30/2023] [Indexed: 11/10/2023]
Abstract
Breast cancer susceptibility gene 1 (BRCA1) and breast cancer susceptibility gene 2 (BRCA2) deleterious variants were the first and, still today, the main biomarkers of poly(ADP)ribose polymerase (PARP)-inhibitors (PARPis) benefit. The recent, increased, numbers of individuals referred for counseling and multigene panel testing, and the remarkable expansion of approved PARPis, not restricted to BRCA1/BRCA2-Pathogenic Variants (PVs), produced a strong clinical need for non-BRCA biomarkers. Significant limitations of the current testing and assays exist. The different approaches that identify the causes of Homologous Recombination Deficiency (HRD), such as the germline and somatic Homologous Recombination Repair (HRR) gene PVs, the testing showing its consequences, such as the genomic scars, or the novel functional assays such as the RAD51 foci testing, are not interchangeable, and should not be considered as substitutes for each other in clinical practice for guiding use of PARPi in non-BRCA, HRD-associated tumors. Today, the deeper knowledge on the significant relationship among all proteins involved in the HRR, not limited to BRCA, expands the possibility of a successful non-BRCA, HRD-PARPi synthetic lethality and, at the same time, reinforces the need for enhanced definition of HRD biomarkers predicting the magnitude of PARPi benefit.
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Affiliation(s)
- Lorena Incorvaia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Alessandro Perez
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Claudia Marchetti
- Department of Woman's and Child Health and Public Health Sciences, Gynecologic Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 8, 00168 Rome, Italy; Catholic University of the Sacred Heart, Rome, Italy
| | - Chiara Brando
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Valerio Gristina
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Daniela Cancelliere
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Alessia Pivetti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Silvia Contino
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Emilia Di Giovanni
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Nadia Barraco
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Marco Bono
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Ambra Giurintano
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Tancredi Didier Bazan Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Andrea Gottardo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Sofia Cutaia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Erika Pedone
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Marta Peri
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Lidia Rita Corsini
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Daniele Fanale
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Antonio Galvano
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Giovanni Scambia
- Department of Woman's and Child Health and Public Health Sciences, Gynecologic Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 8, 00168 Rome, Italy; Catholic University of the Sacred Heart, Rome, Italy
| | - Giuseppe Badalamenti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
| | - Antonio Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy.
| | - Viviana Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (BIND), Section of Medical Oncology, University of Palermo, 90127 Palermo, Italy
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4
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Fanale D, Corsini LR, Pedone E, Randazzo U, Fiorino A, Di Piazza M, Brando C, Magrin L, Contino S, Piraino P, Bazan Russo TD, Cipolla C, Russo A, Bazan V. Potential agnostic role of BRCA alterations in patients with several solid tumors: One for all, all for one? Crit Rev Oncol Hematol 2023; 190:104086. [PMID: 37536445 DOI: 10.1016/j.critrevonc.2023.104086] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/27/2023] [Accepted: 07/30/2023] [Indexed: 08/05/2023] Open
Abstract
Germline BRCA1/2 alterations in the Homologous Recombination (HR) pathway are considered as main susceptibility biomarkers to Hereditary Breast and Ovarian Cancers (HBOC). The modern molecular biology technologies allowed to characterize germline and somatic BRCA1/2 alterations in several malignancies, broadening the landscape of BRCA1/2-alterated tumors. In the last years, BRCA genetic testing, beyond the preventive value, also assumed a predictive and prognostic significance for patient management. The approval of molecules with agnostic indication is leading to a new clinical model, defined "mutational". Among these drugs, the Poly (ADP)-Ribose Polymerase inhibitors (PARPi) for BRCA1/2-deficient tumors were widely studied leading to increasing therapeutic implications. In this Review we provided an overview of the main clinical studies describing the association between BRCA-mutated tumors and PARPi response, focusing on the controversial evidence about the potential agnostic indication based on BRCA1/2 alterations in several solid tumors.
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Affiliation(s)
- Daniele Fanale
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Lidia Rita Corsini
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Erika Pedone
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Ugo Randazzo
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Alessia Fiorino
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Marianna Di Piazza
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Chiara Brando
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Luigi Magrin
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Silvia Contino
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Paola Piraino
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Tancredi Didier Bazan Russo
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Calogero Cipolla
- Division of General and Oncological Surgery, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Antonio Russo
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy.
| | - Viviana Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy
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Di Fiore A, Bellardinelli S, Pirone L, Russo R, Angrisani A, Terriaca G, Bowen M, Bordin F, Besharat ZM, Canettieri G, Fabretti F, Di Gaetano S, Di Marcotullio L, Pedone E, Moretti M, De Smaele E. KCTD1 is a new modulator of the KCASH family of Hedgehog suppressors. Neoplasia 2023; 43:100926. [PMID: 37597490 PMCID: PMC10462845 DOI: 10.1016/j.neo.2023.100926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/21/2023]
Abstract
The Sonic Hedgehog (Hh) signal transduction pathway plays a critical role in many developmental processes and, when deregulated, may contribute to several cancers, including basal cell carcinoma, medulloblastoma, colorectal, prostate, and pancreatic cancer. In recent years, several Hh inhibitors have been developed, mainly acting on the Smo receptor. However, drug resistance due to Smo mutations or non-canonical Hh pathway activation highlights the need to identify further mechanisms of Hh pathway modulation. Among these, deacetylation of the Hh transcription factor Gli1 by the histone deacetylase HDAC1 increases Hh activity. On the other end, the KCASH family of oncosuppressors binds HDAC1, leading to its ubiquitination and subsequent proteasomal degradation, leaving Gli1 acetylated and not active. It was recently demonstrated that the potassium channel containing protein KCTD15 is able to interact with KCASH2 protein and stabilize it, enhancing its effect on HDAC1 and Hh pathway. KCTD15 and KCTD1 proteins share a high homology and are clustered in a specific KCTD subfamily. We characterize here KCTD1 role on the Hh pathway. Therefore, we demonstrated KCTD1 interaction with KCASH1 and KCASH2 proteins, and its role in their stabilization by reducing their ubiquitination and proteasome-mediated degradation. Consequently, KCTD1 expression reduces HDAC1 protein levels and Hh/Gli1 activity, inhibiting Hh dependent cell proliferation in Hh tumour cells. Furthermore, analysis of expression data on publicly available databases indicates that KCTD1 expression is reduced in Hh dependent MB samples, compared to normal cerebella, suggesting that KCTD1 may represent a new putative target for therapeutic approaches against Hh-dependent tumour.
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Affiliation(s)
- A Di Fiore
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - S Bellardinelli
- Department of Experimental Medicine, Sapienza University of Rome, Italy
| | - L Pirone
- Institute of Biostructures and Bioimaging, CNR, Naples 80131, Italy
| | - R Russo
- Institute of Biostructures and Bioimaging, CNR, Naples 80131, Italy; Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli, Caserta, Italy
| | - A Angrisani
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - G Terriaca
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - M Bowen
- Department of Experimental Medicine, Sapienza University of Rome, Italy
| | - F Bordin
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - Z M Besharat
- Department of Experimental Medicine, Sapienza University of Rome, Italy
| | - G Canettieri
- Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - F Fabretti
- Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - S Di Gaetano
- Institute of Biostructures and Bioimaging, CNR, Naples 80131, Italy
| | - L Di Marcotullio
- Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - E Pedone
- Institute of Biostructures and Bioimaging, CNR, Naples 80131, Italy
| | - M Moretti
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Neuromed Institute, Pozzilli 86077, Italy
| | - E De Smaele
- Department of Experimental Medicine, Sapienza University of Rome, Italy.
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6
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Lo Conte M, Cosorich I, Ferrarese R, Antonini Cencicchio M, Nobili A, Palmieri V, Massimino L, Lamparelli LA, Liang W, Riba M, Devecchi E, Bolla AM, Pedone E, Scavini M, Bosi E, Fasano A, Ungaro F, Diana J, Mancini N, Falcone M. Alterations of the intestinal mucus layer correlate with dysbiosis and immune dysregulation in human Type 1 Diabetes. EBioMedicine 2023; 91:104567. [PMID: 37062177 PMCID: PMC10139895 DOI: 10.1016/j.ebiom.2023.104567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 03/09/2023] [Accepted: 03/30/2023] [Indexed: 04/18/2023] Open
Abstract
BACKGROUND In preclinical models of Type 1 Diabetes (T1D) the integrity of the gut barrier (GB) is instrumental to avoid dysregulated crosstalk between the commensal microbiota and immune cells and to prevent autoimmunity. The GB is composed of the intestinal epithelial barrier (IEB) and of the mucus layer containing mucins and antimicrobial peptides (AMPs) that are crucial to maintain immune tolerance. In preclinical models of T1D the alterations of the GB primarily affect the mucus layer. In human T1D increased gut permeability and IEB damage have been demonstrated but the integrity of the mucus layer was never assessed. METHODS We evaluated GB integrity by measuring serological markers of IEB damage (serological levels of zonulin) and bacterial translocation such as lipopolysaccharide binding protein (LBP) and myeloid differentiation protein 2 (MD2), and mRNA expression of tight junction proteins, mucins and AMPs in intestinal tissue of T1D patients and healthy controls (HC). Simultaneously, we performed immunological profiling on intestinal tissue and 16S rRNA analysis on the mucus-associated gut microbiota (MAGM). FINDINGS Our data show a GB damage with mucus layer alterations and reduced mRNA expression of several mucins (MUC2, MUC12, MUC13, MUC15, MUC20, MUC21) and AMPs (HD4 and HD5) in T1D patients. Mucus layer alterations correlated with reduced relative abundance of short chain fatty acids (SCFA)-producing bacteria such as Bifidobacterium dentium, Clostridium butyricum and Roseburia intestinalis that regulate mucin expression and intestinal immune homeostasis. In T1D patients we also found intestinal immune dysregulation with higher percentages of effector T cells such as T helper (Th) 1, Th17 and TNF-α+ T cells. INTERPRETATION Our data show that mucus layer alterations are present in T1D subjects and associated with dysbiosis and immune dysregulation. FUNDING Research Grants from the Juvenile Diabetes Foundation (Grant 1-INO-2018-640-A-N to MF and 2-SRA-2019-680-S-B to JD) and from the Italian Ministry of Health (Grant RF19-12370721 to MF).
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Affiliation(s)
- Marta Lo Conte
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Ilaria Cosorich
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Roberto Ferrarese
- Virology and Microbiology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Martina Antonini Cencicchio
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Angelica Nobili
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Vittoria Palmieri
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Luca Massimino
- Experimental Gastroenterology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | | | | | - Michela Riba
- Center for OMICS Sciences, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Elisabetta Devecchi
- Clinical Nutrition Center, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Andrea Mario Bolla
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Erika Pedone
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Marina Scavini
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Emanuele Bosi
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy; San Raffaele Vita Salute University, Milan, Italy
| | - Alessio Fasano
- Department of Pediatrics, Harvard Medical School, MA, USA
| | - Federica Ungaro
- Experimental Gastroenterology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | | | - Nicasio Mancini
- Virology and Microbiology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy; San Raffaele Vita Salute University, Milan, Italy
| | - Marika Falcone
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy.
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7
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Incorvaia L, Dimino A, Algeri L, Brando C, Magrin L, De Luca I, Pedone E, Perez A, Sciacchitano R, Bonasera A, Bazan Russo TD, Li Pomi F, Peri M, Gristina V, Galvano A, Giuffrida D, Fazio I, Toia F, Cordova A, Florena AM, Giordano A, Bazan V, Russo A, Badalamenti G. Body mass index and baseline platelet count as predictive factors in Merkel cell carcinoma patients treated with avelumab. Front Oncol 2023; 13:1141500. [PMID: 37139149 PMCID: PMC10149939 DOI: 10.3389/fonc.2023.1141500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/23/2023] [Indexed: 05/05/2023] Open
Abstract
Background Merkel cell carcinoma (MCC) is a rare and aggressive skin cancer, associated with a worse prognosis. The Immune Checkpoint Inhibitors (ICIs) avelumab and pembrolizumab have been recently approved as first-line treatment in metastatic MCC (mMCC). The clinical observation of improved outcomes in obese patients following treatment with ICIs, known as the "obesity paradox", has been studied across many types of tumors. Probably due to the rarity of this tumor, data on mMMC patients are lacking. Patients and methods This is an observational, hospital-based, study to investigate the role of Body Mass Index (BMI) as predictive biomarker of ICI response in mMCC patients treated with avelumab as first-line treatment. The study population included the patients treated from February 2019 to October 2022 in an Italian referral center for rare tumors. Clinico-pathological characteristics, BMI, laboratory parameters (NLR and platelet count), and response to avelumab were analyzed from a MCC System database prospectively collected. Results Thirty-two (32) patients were included. Notably, the presence of pre-treatment BMI ≥ 30 was significantly associated with longer PFS [BMI < 30 Group: median PFS, 4 months (95% CI: 2.5-5.4); BMI ≥ 30 Group: median PFS, not reached; p<0.001)[. Additionally, the median PFS was significantly higher in patients with higher PLT (median PFS: 10 months in the "low PLT" Group (95% CI: 4.9, 16.1) vs 33 months (95% CI: 24.3, 43.2) in the "high PLT" Group (p=0.006). The multivariable Cox regression model confirmed these results. Conclusion To our knowledge, this is the first study that investigates the predictive role of BMI in MCC patients. Our data were consistent with the clinical observation of improved outcomes in obese patients across other tumor types. Thus, advanced age, a weakened immune system, and the obesity-associated "inflammaging", are key factors that could impact the cancer immune responses of mMCC patients.
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Affiliation(s)
- Lorena Incorvaia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessandra Dimino
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Laura Algeri
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Chiara Brando
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Luigi Magrin
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Ida De Luca
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Erika Pedone
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessandro Perez
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Roberta Sciacchitano
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Annalisa Bonasera
- Department of Oncology, Istituto Oncologico del Mediterraneo, Catania, Italy
| | - Tancredi Didier Bazan Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Federica Li Pomi
- Department of Clinical and Experimental Medicine, Section of Dermatology, University of Messina, Messina, Italy
| | - Marta Peri
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Valerio Gristina
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Antonio Galvano
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Dario Giuffrida
- Department of Oncology, Istituto Oncologico del Mediterraneo, Catania, Italy
| | - Ivan Fazio
- Radiotherapy Unit, Clinica Macchiarella, Palermo, Italy
| | - Francesca Toia
- Division of Plastic and Reconstructive Surgery, Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy
| | - Adriana Cordova
- Division of Plastic and Reconstructive Surgery, Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy
| | - Ada Maria Florena
- Pathologic Anatomy Unit, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
| | - Antonio Giordano
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA, United States
| | - Viviana Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bind.), Section of Medical Oncology, University of Palermo, Palermo, Italy
- Institute for Cancer Research and Molecular Medicine and Center of Biotechnology, Temple University, Philadelphia, PA, United States
| | - Antonio Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
- Institute for Cancer Research and Molecular Medicine and Center of Biotechnology, Temple University, Philadelphia, PA, United States
- *Correspondence: Antonio Russo,
| | - Giuseppe Badalamenti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
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8
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Incorvaia L, Brando C, Algeri L, Dimino A, Pedone E, Schiacchitano R, Magrin L, Fiorino A, Perez A, Barraco N, Bono M, Cancelliere D, Pivetti A, Bazan Russo T, Contino S, Gristina V, Galvano A, Bazan V, Russo A, Badalamenti G. P-264 The molecular-metabolic interplay in metastatic gastrointestinal stromal tumors (GISTs): The predictive role of body mass index. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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9
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Incorvaia L, Fiorino A, Carreca AP, Gori S, Cinieri S, Curigliano G, Brando C, Peri M, Orlando L, Bazan Russo TD, Gristina V, Pedone E, Bono M, Galvano A, Calò V, Novo G, Badalamenti G, Bazan V, Carreca IU, Russo A. Heart toxicity effects (HTE) of anthracyclines-containing regimens (ACRs) in patients with breast cancer (BC) carrying mutational signature of homologous recombination deficiency (HRD). J Clin Oncol 2022. [DOI: 10.1200/jco.2022.40.16_suppl.10519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
10519 Background: BRCA1/2 genes ( BRCA) play a prominent role in the Homologous Recombination Repair (HRR) pathway. Following the technological progress and deeper knowledge on BRCA-related cancers, the demand for genetic testing is rapidly increasing. Beyond BRCA1/2, other genes are involved in the HRR, including ATM, PALB2, RAD51, and BARD1. Due to the important role in the cellular repair process, deleterious variants in HRR genes may cause inadequate DNA damage repair in cardiomyocytes. The role of BRCA1/2 as predisposing condition to cardiac dysfunction is debated, and the contribution by no- BRCA genes is still unknown. Methods: This is a multicenter, retrospective, study to investigate the risk of heart-insults from anthracyclines on adjuvant setting in BC patients carrying germline pathogenic or likely pathogenic variant (PV) (classes IV and V) in BRCA and no- BRCA HRR pathway genes. We collected genetic and clinical data, and evaluated the left ventricular ejection fraction (LVEF) at cardiac ultrasound, before starting ACR therapy, and at subsequent time points, according to clinical indications. Results: Three hundred and sixty (360) BC patients, aging 22 to 80, were included in this study; 131 patients were carriers of germline PVs in HRR pathway genes: 52 in BRCA1 gene (39.7%), 48 in BRCA2 gene (36.6%), and 31 harbored PVs in no- BRCA HRR pathway genes (23.7%), including PVs in PALB2, CHEK2, ATM, RAD51C, RAD50 and BARD1 genes. In the cohort of 229 patients without PVs, 47 showed variant of uncertain significance (VUS, class III), and 173 had genetic testing not informative. When LVEF between the groups was compared, the difference was not significant for the pre-treatment values. Notably, individuals carrying BRCA or other HRR gene deleterious variants, showed a statistically significant reduction of LVEF > 5% at the second time-point (3 month), compared to the LVEF pre-treatment values (p = 0.001). A marked LVEF reduction was in mutated patients treated with risk-reducing bilateral salpingo-oophorectomy prior to age 40, body mass index > 25, and type-II diabetes mellitus. The latter risk factor was probably related to increased risk developing insulin-resistance reported for BRCA-mutated patients. Conclusions: Our data suggest that PVs in BRCA or other genes involved in HRR pathway, can lead to impaired homologous recombination, thus increasing sensitivity of cardiac cells to DNA damaging chemotherapy in BC patients. In this subgroup of patients, other measurements such as the global longitudinal strain (GLS), and a more in-depth assessment of risk factors, could be proposed to optimize cardiovascular risk-management and to improve long-term survival.
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Affiliation(s)
- Lorena Incorvaia
- Dept.of Surgical,Oncological and Oral Sciences,Section of Medical Oncology,University of Palermo,Italy, Palermo, Italy
| | - Alessia Fiorino
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Anna Paola Carreca
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Stefania Gori
- IRCCS Ospedale Sacro Cuore Don Calabria, Negrar (VR), Italy
| | - Saverio Cinieri
- Department of Oncology, Medical Oncology, "Antonio Perrino" Hospital, Brindisi, Italy
| | | | | | - Marta Peri
- University School of Medicine, Palermo, Italy
| | - Laura Orlando
- Medical Oncology andBreast Unit, Ospedale A Perrino, Brindisi, Italy
| | | | | | - Erika Pedone
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Marco Bono
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Antonio Galvano
- Department of Surgical, Oncological, and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Valentina Calò
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | | | - Giuseppe Badalamenti
- Department of Surgical, Oncological, and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | | | | | - Antonio Russo
- Department of Surgical, Oncological, and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
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10
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Fanale D, Pivetti A, Cancelliere D, Spera A, Bono M, Fiorino A, Pedone E, Barraco N, Brando C, Perez A, Guarneri MF, Russo TDB, Vieni S, Guarneri G, Russo A, Bazan V. BRCA1/2 variants of unknown significance in hereditary breast and ovarian cancer (HBOC) syndrome: looking for the hidden meaning. Crit Rev Oncol Hematol 2022; 172:103626. [PMID: 35150867 DOI: 10.1016/j.critrevonc.2022.103626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/28/2022] [Accepted: 02/07/2022] [Indexed: 01/04/2023] Open
Abstract
Hereditary breast and ovarian cancer syndrome is caused by germline mutations in BRCA1/2 genes. These genes are very large and their mutations are heterogeneous and scattered throughout the coding sequence. In addition to the above-mentioned mutations, variants of uncertain/unknown significance (VUSs) have been identified in BRCA genes, which make more difficult the clinical management of the patient and risk assessment. In the last decades, several laboratories have developed different databases that contain more than 2000 variants for the two genes and integrated strategies which include multifactorial prediction models based on direct and indirect genetic evidence, to classify the VUS and attribute them a clinical significance associated with a deleterious, high-low or neutral risk. This review provides a comprehensive overview of literature studies concerning the VUSs, in order to assess their impact on the population and provide new insight for the appropriate patient management in clinical practice.
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Affiliation(s)
- Daniele Fanale
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Alessia Pivetti
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Daniela Cancelliere
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Antonio Spera
- Department of Radiotherapy, San Giovanni di Dio Hospital, ASP of Agrigento, Agrigento, Italy
| | - Marco Bono
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Alessia Fiorino
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Erika Pedone
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Nadia Barraco
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Chiara Brando
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Alessandro Perez
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | | | - Tancredi Didier Bazan Russo
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Salvatore Vieni
- Division of General and Oncological Surgery, Department of Surgical, Oncological and Oral Sciences, University of Palermo, Italy
| | - Girolamo Guarneri
- Gynecology Section, Mother - Child Department, University of Palermo, 90127 Palermo, Italy
| | - Antonio Russo
- Section of Medical Oncology, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy.
| | - Viviana Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy
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11
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Brando C, Fanale D, Incorvaia L, Algeri L, Barraco N, Corsini L, Cucinella A, Dimino A, Filorizzo C, Fiorino A, Madonia G, Magrin L, Pedone E, Ricciardi M, Sciacchitano R, Scalia R, Badalamenti G, Bazan V, Russo A. 32P Can circulating immune checkpoints and KIT exon 11 mutations be prognostic factors in metastatic gastrointestinal stromal tumors? Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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12
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Incorvaia L, Badalamenti G, Fanale D, Vincenzi B, Luca ID, Algeri L, Barraco N, Brando C, Bonasera A, Bono M, Castiglia M, Cancelliere D, Cani M, Rita Corsini L, Fiorino A, Galvano A, Pedone E, Perez A, Pivetti A, Graceffa G, Pantuso G, Cabibi D, Russo A, Bazan V. Not all KIT 557/558 codons mutations have the same prognostic influence on recurrence-free survival: breaking the exon 11 mutations in gastrointestinal stromal tumors (GISTs). Ther Adv Med Oncol 2021; 13:17588359211049779. [PMID: 34616493 PMCID: PMC8488518 DOI: 10.1177/17588359211049779] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 09/08/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Although the gastrointestinal stromal tumor (GIST) genotype is not currently
included in risk-stratification systems, a growing body of evidence shows
that the pathogenic variant (PV) type and codon location hold a strong
prognostic influence on recurrence-free survival (RFS). This information has
particular relevance in the adjuvant setting, where an accurate
prognostication could help to better identify high-risk tumors and guide
clinical decision-making. Materials and Methods: Between January 2005 and December 2020, 96 patients with completely resected
GISTs harboring a KIT proto-oncogene receptor tyrosine kinase
(KIT) exon 11 PV were included in the study. We
analyzed the type and codon location of the PV according to
clinicopathological characteristics and clinical outcome; the metastatic
sites in relapsed patients were also investigated. Results: Tumors harboring a KIT exon 11 deletion or
deletion/insertion involving the 557 and/or 558 codons, showed a more
aggressive clinical behavior compared with tumors carrying
deletion/deletion/insertion in other codons, or tumors with
duplication/insertion/single-nucleotide variant (SNV) (7-year RFS: 50%
versus 73.1% versus 88.2%,
respectively; p < 0.001). Notably, among 18 relapsed
patients with 557 and/or 558 deletion or deletion/insertion, 14 patients
(77.8%) harbored deletions simultaneously involving 557 and 558 codons,
while only 4 patients (22.2%) harbored deletions involving only 1 of the
557/558 codons. Thus, when 557 or 558 deletions occurred separately, the
tumor showed a prognostic behavior similar to the GIST carrying deletions
outside the 557/558 position. Remarkably, patients with GISTs stratified as
intermediate risk, but carrying the 557/558 deletion, showed a similar
outcome to the high-risk patients with tumors harboring deletions in codons
other than 557/558, or duplication/insertion/SNV. Conclusion: Our data support the inclusion of the PV type and codon location in routine
risk prediction models, and suggest that intermediate-risk patients whose
GISTs harbor 557/558 deletions may also need to be treated with adjuvant
imatinib like the high-risk patients.
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Affiliation(s)
- Lorena Incorvaia
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), Section of Medical Oncology, University of Palermo, Via del Vespro 129, Palermo, 90127, Italy
| | - Giuseppe Badalamenti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Daniele Fanale
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Bruno Vincenzi
- Department of Medical Oncology, Biomedical Campus, University of Rome, Rome, Italy
| | - Ida De Luca
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Laura Algeri
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Nadia Barraco
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Chiara Brando
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Annalisa Bonasera
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Marco Bono
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Marta Castiglia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Daniela Cancelliere
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Massimiliano Cani
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Lidia Rita Corsini
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessia Fiorino
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Antonio Galvano
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Erika Pedone
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessandro Perez
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessia Pivetti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Giuseppa Graceffa
- Department of Surgical, Oncological and Oral Sciences, Section of General and Oncological Surgery, University of Palermo, Palermo, Italy
| | - Gianni Pantuso
- Department of Surgical, Oncological and Oral Sciences, Section of General and Oncological Surgery, University of Palermo, Palermo, Italy
| | - Daniela Cabibi
- Department of Health Promotion, Mother and Child Care, University of Palermo, Palermo, Italy
| | - Antonio Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Viviana Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), Section of Medical Oncology, University of Palermo, Palermo, Italy
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13
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Losa M, Detomas M, Bailo M, Barzaghi LR, Albano L, Piloni M, Pagnano A, Pedone E, Mortini P. Gamma knife radiosurgery in patients with Nelson's syndrome. J Endocrinol Invest 2021; 44:2243-2251. [PMID: 33611756 DOI: 10.1007/s40618-021-01531-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/08/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE Nelson's syndrome (NS) is a long-term complication of bilateral adrenalectomy in patients with Cushing's disease. The best therapeutic strategy in NS has not been well defined. Gamma knife radiosurgery (GKRS) is very effective to stop the growth of the pituitary adenoma, which is the main goal of the treatment of patients with NS. We report the largest series of patients with NS treated by GKRS at a single center. METHODS The study was an observational, retrospective analysis of 28 consecutive patients with NS treated by GKRS in our department between 1995 and 2019. All patients had a growing ACTH-secreting pituitary adenoma. The main outcome of the study was to assess by the Kaplan-Meier method the risk of tumor progression after GKRS. RESULTS The median follow-up after GKRS treatment was 98 months (IQR 61-155 months, range 7-250 months). Two patients (7.1%) had a recurrence of disease during follow-up. The 10-year progression-free survival was 91.7% (95% CI 80.5-100%). No patient had deterioration of visual function or oculomotor function after GKRS. New onset of hypogonadism and hypothyroidism occurred in 18.8% and 14.3% of the patients at risk. CONCLUSION Our study confirms that GKRS may stop the tumor growth in the majority of patients with NS, even though very aggressive adenomas may ultimately escape this treatment. Safety of GKRS was good in our experience, but due attention must be paid to planning the distribution of radiation to critical structures, especially in patients previously treated by radiation.
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Affiliation(s)
- M Losa
- Department of Neurosurgery, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132, Milan, Italy.
| | - M Detomas
- Division of Endocrinology and Diabetes, Department of Internal Medicine I, University Hospital Würzburg, University of Würzburg, Würzburg, Germany
| | - M Bailo
- Department of Neurosurgery, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132, Milan, Italy
| | - L R Barzaghi
- Department of Neurosurgery, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132, Milan, Italy
| | - L Albano
- Department of Neurosurgery, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132, Milan, Italy
| | - M Piloni
- Department of Neurosurgery, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132, Milan, Italy
| | - A Pagnano
- Vita-Salute San Raffaele University, Milan, Italy
| | - E Pedone
- Vita-Salute San Raffaele University, Milan, Italy
| | - P Mortini
- Department of Neurosurgery, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132, Milan, Italy
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14
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Bono M, Fanale D, Incorvaia L, Barraco N, Brando C, Calò V, Cancelliere D, Corsini L, Dimino A, Filorizzo C, Fiorino A, Gristina V, Magrin L, Pedone E, Perez A, Pivetti A, Scalia R, Sciacchitano R, Bazan V, Russo A. 166P Hereditary breast, ovarian and pancreatic cancers: Looking beyond the BRCA1/2 genes. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Fanale D, Dimino A, Filorizzo C, Brando C, Incorvaia L, Magrin L, Sciacchitano R, Corsini L, Fiorino A, Barraco N, M. bono, Calò V, Cancelliere D, Cucinella A, Madonia G, Pedone E, Pivetti A, Scalia R, Russo A, Bazan V. 502P Impact of different selection approaches for identifying Lynch syndrome-related colorectal cancer patients. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Fiorino A, Fanale D, Incorvaia L, Barraco N, Bono M, Brando C, Calcara K, Calò V, Cancelliere D, Dimino A, Filorizzo C, Greco M, Magrin L, Pedone E, Perez A, Pivetti A, Sammataro S, Sciacchitano R, Bazan V, Russo A. 162P Prevalence and spectrum analysis of germline BRCA1 and BRCA2 variants of unclear significance in HBOC Syndrome: Decoding the mysterious signals of the genome. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Bono M, Fanale D, Incorvaia L, Cancelliere D, Fiorino A, Calò V, Dimino A, Filorizzo C, Corsini LR, Brando C, Madonia G, Cucinella A, Scalia R, Barraco N, Guadagni F, Pedone E, Badalamenti G, Russo A, Bazan V. Impact of deleterious variants in other genes beyond BRCA1/2 detected in breast/ovarian and pancreatic cancer patients by NGS-based multi-gene panel testing: looking over the hedge. ESMO Open 2021; 6:100235. [PMID: 34371384 PMCID: PMC8358413 DOI: 10.1016/j.esmoop.2021.100235] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/11/2021] [Accepted: 07/14/2021] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Hereditary breast cancer (BC), ovarian cancer (OC), and pancreatic cancer (PC) are the major BRCA-associated tumours. However, some BRCA1/2-wild-type (wt) patients with a strong personal and/or family history of cancer need a further genetic testing through a multi-gene panel containing other high- and moderate-risk susceptibility genes. PATIENTS AND METHODS Our study was aimed to assess if some BC, OC, or PC patients should be offered multi-gene panel testing, based on well-defined criteria concerning their personal and/or family history of cancer, such as earliness of cancer onset, occurrence of multiple tumours, or presence of at least two or more affected first-degree relatives. For this purpose, 205 out of 915 BC, OC, or PC patients, resulted negative for BRCA1/2 and with significant personal and/or family history of cancer, were genetically tested for germline pathogenic or likely pathogenic variants (PVs/LPVs) in genes different from BRCA1/2. RESULTS Our investigation revealed that 31 (15.1%) out of 205 patients harboured germline PVs/LPVs in no-BRCA genes, including PALB2, CHEK2, ATM, MUTYH, MSH2, and RAD51C. Interestingly, in the absence of an analysis conducted through multi-gene panel, a considerable percentage (15.1%) of PVs/LPVs would have been lost. CONCLUSIONS Providing a multi-gene panel testing to BRCA1/2-wt BC/OC/PC patients with a strong personal and/or family history of cancer could significantly increase the detection rates of germline PVs/LPVs in other cancer predisposition genes beyond BRCA1/2. The use of a multi-gene panel testing could improve the inherited cancer risk estimation and clinical management of patients and unaffected family members.
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Affiliation(s)
- M Bono
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - D Fanale
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - L Incorvaia
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - D Cancelliere
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - A Fiorino
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - V Calò
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - A Dimino
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - C Filorizzo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - L R Corsini
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - C Brando
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - G Madonia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - A Cucinella
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - R Scalia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - N Barraco
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - F Guadagni
- BioBIM (Interinstitutional Multidisciplinary Biobank), IRCCS San Raffaele Pisana, Rome, Italy; Department of Human Sciences & Quality of Life Promotion, San Raffaele Roma Open University, Rome, Italy
| | - E Pedone
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - G Badalamenti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - A Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy.
| | - V Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), Section of Medical Oncology, University of Palermo, Palermo, Italy
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Fanale D, Fiorino A, Incorvaia L, Dimino A, Filorizzo C, Bono M, Cancelliere D, Calò V, Brando C, Corsini LR, Sciacchitano R, Magrin L, Pivetti A, Pedone E, Madonia G, Cucinella A, Badalamenti G, Russo A, Bazan V. Prevalence and Spectrum of Germline BRCA1 and BRCA2 Variants of Uncertain Significance in Breast/Ovarian Cancer: Mysterious Signals From the Genome. Front Oncol 2021; 11:682445. [PMID: 34178674 PMCID: PMC8226162 DOI: 10.3389/fonc.2021.682445] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/25/2021] [Indexed: 12/26/2022] Open
Abstract
About 10–20% of breast/ovarian (BC/OC) cancer patients undergoing germline BRCA1/2 genetic testing have been shown to harbor Variants of Uncertain Significance (VUSs). Since little is known about the prevalence of germline BRCA1/2 VUS in Southern Italy, our study aimed at describing the spectrum of these variants detected in BC/OC patients in order to improve the identification of potentially high-risk BRCA variants helpful in patient clinical management. Eight hundred and seventy-four BC or OC patients, enrolled from October 2016 to December 2020 at the “Sicilian Regional Center for the Prevention, Diagnosis and Treatment of Rare and Heredo-Familial Tumors” of University Hospital Policlinico “P. Giaccone” of Palermo, were genetically tested for germline BRCA1/2 variants through Next-Generation Sequencing analysis. The mutational screening showed that 639 (73.1%) out of 874 patients were BRCA-w.t., whereas 67 (7.7%) were carriers of germline BRCA1/2 VUSs, and 168 (19.2%) harbored germline BRCA1/2 pathogenic/likely pathogenic variants. Our analysis revealed the presence of 59 different VUSs detected in 67 patients, 46 of which were affected by BC and 21 by OC. Twenty-one (35.6%) out of 59 variants were located on BRCA1 gene, whereas 38 (64.4%) on BRCA2. We detected six alterations in BRCA1 and two in BRCA2 with unclear interpretation of clinical significance. Familial anamnesis of a patient harboring the BRCA1-c.3367G>T suggests for this variant a potential of pathogenicity, therefore it should be carefully investigated. Understanding clinical significance of germline BRCA1/2 VUS could improve, in future, the identification of potentially high-risk variants useful for clinical management of BC or OC patients and family members.
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Affiliation(s)
- Daniele Fanale
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessia Fiorino
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Lorena Incorvaia
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessandra Dimino
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Clarissa Filorizzo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Marco Bono
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Daniela Cancelliere
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Valentina Calò
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Chiara Brando
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Lidia Rita Corsini
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Roberta Sciacchitano
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Luigi Magrin
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessia Pivetti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Erika Pedone
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Giorgio Madonia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessandra Cucinella
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Giuseppe Badalamenti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Antonio Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Viviana Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), Section of Medical Oncology, University of Palermo, Palermo, Italy
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Castiglia M, Incorvaia L, Perez A, Brando C, Galvano A, Barraco N, Calò V, Cancelliere D, Fiorino A, Pivetti A, Pedone E, Sardo D, Inguglia S, di Marco J, Bono M, Fanale D, Carreca AP, Carreca IU, Russo A, Bazan V. The role of polymorphisms occurring in BRCA1/2 genes in determining ovarian cancer risk. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.15_suppl.e17551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e17551 Background: Ovarian cancer (OC) is the 10th tumor occurring in women, it accounts for 30% of all malignant tumor affecting female genital tract in Italy. There are several factors that contribute to OC development; in 15-25% of cases family history of breast and ovarian cancer represent the main risk factor. It is well known that pathogenic variants (PVs) occurring in BRCA1/2 genes strongly increase the risk of developing OC, ranging from 50% in BRCA1 PVs carriers to 30% in BRCA2 PVs carriers. Recently genetic polymorphism has been shown to increase cancer risk, consequently polymorphisms in BRCA1/2 genes could represent low penetrance susceptibility alleles and contribute to determine specific clinicopathological features in OC patients harboring BRCA1/2 PVs. Methods: From 2015 to 2021, 338 patients diagnosed with epithelial OC (not mucinous, not borderline) were subjected to BRCA1/2 analysis. After obtaining informed consent, blood samples were processed for genomic DNA isolation; DNA was used for library preparation with the BRaCa Screen kit. Sequencing was performed on the IonS5 platform; variant annotation was performed with Amplicon Suite software. We collected data of both PVs and polymorphisms in BRCA1/2 genes with the aim to evaluate whether a cluster of specific polymorphisms could impact clinicopathological features in BRCA1 PVs carriers. Results: Among the 338 screened EOC, BRCA1/2 PVs were reported in 85 patients (25%). 66% of patients harbored BRCA1 PVs and 34% in BRCA2. The most frequent BRCA1 PVs were the c.4964_4982del (5083del19), c.514delC and c.181T > G; the first and the last are known for their founder effect in Italy and Eastern Europe. Looking at BRCA1 gene, in 75% of patients we identified a polymorphisms cluster (c.2082C > T, c.2311T > C, c.2612C > T, c.3113A > G, c.3548A > G, c.4308T > C, c.4837A > G). The c.514delC and c.181T > G PVs are always associated with the cluster and two additional polymorphisms, the c.2077G > A and the c.1067A > G respectively. Conversely, the cluster seems not to be associated with the PVs 5083del19. Interestingly in BRCA1-5083del19 PV carriers median age at OC diagnosis was 50 years (range 45-69). On average, these patients developed ovarian cancer 6 years earlier than other BRCA1 PV carriers (median age at diagnosis 57 years; range 30-81). Bilateral tumors were frequent and occurred in 57% of the patients versus 33% in OC patients carrying other BRCA1 PVs. Therefore, it seems that the cluster has a “protective” effect and that its absence reduces age at diagnosis. Conclusions: Despite this study has the main limitation of a small sample size, we have reported a possible association between polymorphisms cluster and clinicopathological features in BRCA1 PVs carriers. By further investigating this aspect in a larger cohort, we might be able to prove the role of this cluster in increasing or reducing OC risk and providing clinicians more information useful for patients’ stratification.
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Affiliation(s)
- Marta Castiglia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Lorena Incorvaia
- Medical Oncology Unit, Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Alessandro Perez
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Chiara Brando
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Antonio Galvano
- Department of Surgical, Oncological, and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Nadia Barraco
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Valentina Calò
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Daniela Cancelliere
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Alessia Fiorino
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Alessia Pivetti
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Erika Pedone
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Delia Sardo
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Sara Inguglia
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Jole di Marco
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | - Marco Bono
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Daniele Fanale
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Anna Paola Carreca
- Department of Surgical, Oncological and Oral Sciences – University of Palermo, Palermo, Italy
| | | | - Antonio Russo
- Department of Surgical, Oncological, and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Viviana Bazan
- Medical Oncology Unit, Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, Palermo, Italy
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di Filippo L, Formenti AM, Doga M, Pedone E, Rovere-Querini P, Giustina A. Radiological Thoracic Vertebral Fractures are Highly Prevalent in COVID-19 and Predict Disease Outcomes. J Clin Endocrinol Metab 2021; 106:e602-e614. [PMID: 33159451 PMCID: PMC7797741 DOI: 10.1210/clinem/dgaa738] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/08/2020] [Indexed: 12/27/2022]
Abstract
CONTEXT AND OBJECTIVE COVID-19 has become the most relevant medical issue globally. Despite several studies that have investigated clinical characteristics of COVID-19 patients, no data have been reported on the prevalence of vertebral fractures (VFs). Since VFs may influence cardiorespiratory function and disease outcomes, the aim of this study was to assess VFs prevalence and clinical impact in COVID-19. DESIGN AND PATIENTS This was a retrospective cohort study performed at San Raffaele Hospital, a tertiary health care hospital in Italy. We included COVID-19 patients for whom lateral chest x-rays at emergency department were available. VFs were detected using a semiquantitative evaluation of vertebral shape on chest x-rays. RESULTS A total of 114 patients were included in this study and thoracic VFs were detected in 41 patients (36%). Patients with VFs were older and more frequently affected by hypertension and coronary artery disease (P < 0.001, P = 0.007, P = 0.034; respectively). Thirty-six (88%) patients in VFs+ group compared to 54 (74%) in VFs- group were hospitalized (P = 0.08). Patients with VFs more frequently required noninvasive mechanical ventilation compared with those without VFs (P = 0.02). Mortality was 22% in VFs+ group and 10% in VFs- group (P = 0.07). In particular, mortality was higher in patients with severe VFs compared with those with moderate and mild VFs (P = 0.04). CONCLUSIONS VFs may integrate the cardiorespiratory risk of COVID-19 patients, being a useful and easy to measure clinical marker of fragility and poor prognosis. We suggest that morphometric thoracic vertebral evaluation should be performed in all suspected COVID-19 patients undergoing chest x-rays.
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Affiliation(s)
- Luigi di Filippo
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Anna Maria Formenti
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Mauro Doga
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Erika Pedone
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Patrizia Rovere-Querini
- Vita-Salute San Raffaele University and Division of Transplantation, Immunology and Transplantation Diseases, San Raffaele Scientific Institute, Milan, Italy
| | - Andrea Giustina
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
- Correspondence and Reprint Requests: Prof. Andrea Giustina, MD, Division of Endocrinology, IRCCS San Raffaele Hospital, via Olgettina 60, 20132 Milano, Italy. E-mail:
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Formenti AM, Pedone E, di Filippo L, Ulivieri FM, Giustina A. Are women with osteoporosis treated with denosumab at risk of severe COVID-19? Endocrine 2020; 70:203-205. [PMID: 32951069 PMCID: PMC7502215 DOI: 10.1007/s12020-020-02500-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 09/11/2020] [Indexed: 01/08/2023]
Affiliation(s)
- Anna Maria Formenti
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Erika Pedone
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Luigi di Filippo
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Fabio Massimo Ulivieri
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Andrea Giustina
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Scientific Institute, Milan, Italy.
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Pedone E, Laurenzi A, Allora A, Bolla AM, Caretto A. Insulin pump therapy and continuous glucose monitoring in adults with type 2 diabetes: where are we now? Exploration of Medicine 2020. [DOI: 10.37349/emed.2020.00021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Technology in diabetes is rapidly evolving, with the aim of helping affected people to safely optimize their blood glucose control. New technologies are now considered as an essential tool for managing glycemia predominantly in people with type 1 diabetes, and clinical trials have demonstrated that in these subjects the use of continuous subcutaneous insulin infusion (CSII) and continuous glucose monitoring (CGM) systems are associated with improved glycemic control along with a better quality of life. Literature regarding technologies and type 2 diabetes is relatively lacking, but innovations may have an important role also in the management of these patients. Some studies in adults with type 2 diabetes have shown benefits with the use of CGM in terms of glycemic variability and improved therapeutic adjustments. Clinical trials about CSII and CGM use in type 2 diabetes may have some pitfalls and future studies are needed to assess how these advanced systems could improve clinical outcomes and also ensure cost-effectiveness in this population. In this narrative review, we aim to highlight the most relevant studies on this topic and to focus on the potential role of new technological devices in type 2 diabetes management.
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Affiliation(s)
- Erika Pedone
- Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Andrea Laurenzi
- Department of Internal Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Agnese Allora
- Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Andrea Mario Bolla
- Department of Internal Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Amelia Caretto
- Department of Internal Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
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Losa M, Garbin E, Pedone E, Mortini P. Normal Insulin-like Growth Factor 1 During Somatostatin Receptor Ligand Treatment Predicts Surgical Cure in Acromegaly. J Clin Endocrinol Metab 2020; 105:5866056. [PMID: 32609842 DOI: 10.1210/clinem/dgaa424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 06/29/2020] [Indexed: 11/19/2022]
Abstract
CONTEXT Treatment with somatostatin receptor ligands (SRLs) is often given before pituitary surgery to patients with acromegaly. OBJECTIVE To study whether the response to treatment with SRLs is predictive of surgical outcome. DESIGN Retrospective, observational study. SETTING Tertiary care center. PATIENTS We investigated 272 patients with acromegaly who had been treated with an SRL between 1990 and 2018. INTERVENTION All patients underwent pituitary surgery performed by a skilled neurosurgeon. MAIN OUTCOME MEASURE Outcome of pituitary surgery in patients who had normalization of insulin-like growth factor 1 (IGF-1) levels during SRL therapy in comparison with patients who did not normalize IGF-1 levels. RESULTS Normalization of IGF-1 levels during SRL treatment occurred in 62 patients (22.8%) and was similar for the 3 different types of SRL (P = .88). Surgical remission occurred in 59.6% of the patients. Patients who normalized IGF-1 levels during SRL treatment had a higher probability of surgical cure than patients without IGF-1 normalization (83.9% vs 52.4%, respectively; P < .001). Multivariate analysis confirmed that lack of cavernous sinus invasion, small maximum tumor diameter, and IGF-1 normalization during SRL therapy were the only factors independently associated with a favorable surgical outcome. CONCLUSIONS Our study demonstrates that the normalization of IGF-1 levels during treatment with SRLs is an independent predictive factor of a favorable surgical outcome. The underlying mechanisms remain unclear, but an optimal response to medical therapy may be a characteristic of less aggressive tumors that are more likely to be entirely removed at surgery.
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Affiliation(s)
- Marco Losa
- Department of Neurosurgery, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
| | | | - Erika Pedone
- Vita-Salute San Raffaele University, Milan, Italy
| | - Pietro Mortini
- Department of Neurosurgery, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
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Frara S, Losa M, Pedone E, Resmini E, Tecilazich F, Mortini P, Giustina A. MON-LB50 Poor Response to Pre-Surgical Treatment With Somatostatin Receptor Ligands Is Associated With Diabetes Mellitus in Patients With Acromegaly. J Endocr Soc 2020. [PMCID: PMC7208190 DOI: 10.1210/jendso/bvaa046.2292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Introduction: somatostatin receptor ligands (SRL) represent the first-line medical therapy in acromegaly patients who were not cured by surgery and in those where surgical remission is unlikely. It is well known that SRL may negatively act on insulin secretion, with consequent hyperglycemia and diabetes mellitus (DM). Purpose: To evaluate whether the degree of response to surgical pre-treatment with SRL predicts alterations in blood glucose levels.Patients and Methods: We retrospectively studied 181 patients attending the Unit of Neurosurgery of our Hospital prior to transsphenoidal surgery. All patients had a biochemical and radiological diagnosis of acromegaly (nadir GH during OGTT >0.4 ng/mL; IGF-I above age-standardized UNL and pituitary adenoma at MRI scans); diagnosis of DM and impaired fasting glucose (IFG) was performed on fasting blood glucose (FBG) according to the American Diabetes Association guidelines; all parameters of the pituitary axes were determined. The response to SRL treatment was determined as percent change of GH levels. Data are presented as mean±SD; Continuous data normally distributed were analyzed using a two-tailed Student’s t-test to compare two groups, and one-way ANOVA to compare several groups, followed by the Bonferroni post-hoc procedure for pairwise comparison of groups after the null hypothesis was rejected (p<0.05); categorical data were analyzed by chi-squared test.Results: 97 (54%) patients with acromegaly underwent pre-surgical treatment with SRL; we found no difference in age (53±11 vs. 51±12 years; p=NS) and sex (M/F: 51/46 vs. 43/41; p=NS) between SRL treated and non-treated patients. We found no difference in FBG between SRL treated vs. non-treated patients. In contrast, we found increased proportions of IFG and DM patients in SRL treated when compared to non-treated patients (euglycemic: 45%, IFG: 42%, DM: 13% vs. euglycemic: 70%, IFG: 22%, DM: 8%, respectively; p=0.006). In addition, SRL treatment increased the odds ratio of IFG and DM (OR 4.7; 95%CI 2.1-10.3). When considering the degree of response to SRL pre-surgical treatment, we found that poor responders displayed at the time of surgery glycemias diagnostic of DM; whereas, good responders displayed glycemias in the range of IFG (percent change in GH levels 50±35% vs 79±22%, respectively; p<0.05).Conclusions: Our findings show that the proportion of patients with acromegaly undergoing surgery with glycemic levels diagnostic of DM, is modest. Interestingly, pre-treatment with SRL represents an independent risk factor for high glucose levels. Moreover, among patients on SRL pre-treatment, the ones that respond poorly are the ones that at the time of surgery display glycemias diagnostic of DM. Our findings suggest that SRL pre-treatment may predispose to worsened glucose metabolism but selectively affecting those patients in whom biochemical control is not reached.
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Affiliation(s)
- Stefano Frara
- Chair of Endocrinology, Università Vita-Salute San Raffaele, Milan, Italy
| | - Marco Losa
- Neurosurgery Unit, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Erika Pedone
- Chair of Endocrinology, Università Vita-Salute San Raffaele, Milan, Italy
| | | | | | - Pietro Mortini
- Neurosurgery Unit, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Andrea Giustina
- Chair of Endocrinology, Università Vita-Salute San Raffaele, Milan, Italy
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Pirone L, Di Gaetano S, Rizzarelli E, Bellia F, Pedone E. Focusing on the functional characterization of the anserinase from Oreochromis niloticus. Int J Biol Macromol 2019; 130:158-165. [PMID: 30797810 DOI: 10.1016/j.ijbiomac.2019.02.118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 02/20/2019] [Accepted: 02/20/2019] [Indexed: 12/24/2022]
Abstract
Carnosine, anserine and homocarnosine are the three most representative compounds of the histidine dipeptides family, widely distributed in mammals in different amounts depending on the species and the tissue considered. Histidine dipeptides are mainly degraded by two different carnosinase homologues: a highly specific metal-ion dependent carnosinase (CN1) located in serum and brain and a non-specific cytosolic form (CN2). The hydrolysis of such dipeptides in prokaryotes and eukaryotes is also catalyzed by the anserinase (ANSN). Such naturally occurring dipeptides represent an interesting topic because they seem to have numerous biological roles such as potential neuroprotective and neurotransmitter functions in the brain and therefore ANSN results to be a very interesting target of study. We here report, for the first time, cloning, expression of ANSN from the fish Oreochromis niloticus both in a mammalian and in a prokaryotic system, in order to perform deep functional studies by enzymatic assays in the presence of different metals and substrates. Furthermore, by means of a mass spectrometry-based proteomic approach, we analysed protein sequence and the potential presence of post-translational modifications in the mammalian recombinant protein. Finally, a preliminary structural characterization was carried out on ANSN produced in Escherichia coli.
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Affiliation(s)
- L Pirone
- Institute of Biostructure and Bioimaging, CNR, Napoli, Italy
| | - S Di Gaetano
- Institute of Biostructure and Bioimaging, CNR, Napoli, Italy
| | - E Rizzarelli
- Institute of Biostructure and Bioimaging, CNR, Catania, Italy; Department of Chemical Sciences, University of Catania, Catania, Italy
| | - F Bellia
- Institute of Biostructure and Bioimaging, CNR, Catania, Italy.
| | - E Pedone
- Institute of Biostructure and Bioimaging, CNR, Napoli, Italy.
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Bellia F, Lanza V, García-Viñuales S, Ahmed IMM, Pietropaolo A, Iacobucci C, Malgieri G, D'Abrosca G, Fattorusso R, Nicoletti VG, Sbardella D, Tundo GR, Coletta M, Pirone L, Pedone E, Calcagno D, Grasso G, Milardi D. Ubiquitin binds the amyloid β peptide and interferes with its clearance pathways. Chem Sci 2019; 10:2732-2742. [PMID: 30996991 PMCID: PMC6419943 DOI: 10.1039/c8sc03394c] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 01/09/2019] [Indexed: 12/22/2022] Open
Abstract
Several lines of evidence point to a compromised proteostasis associated with a reduction of the Ubiquitin Proteasome System (UPS) activity in patients affected by Alzheimer's Disease (AD) and suggest that the amyloid β peptide (Aβ) is an important player in the game. Inspired also by many reports, underlining the presence of ubiquitin (Ub) in the amyloid plaques of AD brains, here we set out to test whether Ub may bind the Aβ peptide and have any effect on its clearance pathways. By using an integrated array of MALDI-TOF/UPLC-HRMS, fluorescence, NMR, SPR, Microscale Thermophoresis (MST) and molecular dynamics studies, we consistently demonstrated that Aβ40 binds Ub with a 1 : 1 stoichiometry and K d in the high micromolar range. In particular, we show that the N-terminal domain of the Aβ peptide (through residues D1, E3 and R5) interacts with the C-terminal tail of Ub (involving residues K63 and E64), inducing the central region of Aβ (14HQKLVFFAEDVGSNK28) to adopt a mixed α-helix/β-turn structure. ELISA assays, carried out in neuroblastoma cell lysates, suggest that Aβ competitively binds Ub also in the presence of the entire pool of cytosolic Ub binding proteins. Ub-bound Aβ has a lower tendency to aggregate into amyloid-like fibrils and is more slowly degraded by the Insulin Degrading Enzyme (IDE). Finally, we observe that the water soluble fragment Aβ1-16 significantly inhibits Ub chain growth reactions. These results evidence how the non-covalent interaction between Aβ peptides and Ub may have relevant effects on the regulation of the upstream events of the UPS and pave the way to future in vivo studies addressing the role played by Aβ peptide in the malfunction of proteome maintenance occurring in AD.
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Affiliation(s)
- F Bellia
- Consiglio Nazionale delle Ricerche , Istituto di Biostrutture e Bioimmagini , Via P. Gaifami 18 , 95126 Catania , Italy .
| | - V Lanza
- Consiglio Nazionale delle Ricerche , Istituto di Biostrutture e Bioimmagini , Via P. Gaifami 18 , 95126 Catania , Italy .
| | - S García-Viñuales
- Consiglio Nazionale delle Ricerche , Istituto di Biostrutture e Bioimmagini , Via P. Gaifami 18 , 95126 Catania , Italy .
| | - I M M Ahmed
- Consiglio Nazionale delle Ricerche , Istituto di Biostrutture e Bioimmagini , Via P. Gaifami 18 , 95126 Catania , Italy .
| | - A Pietropaolo
- Dipartimento di Scienze della Salute , Università degli Studi Magna Graecia di Catanzaro , Viale Europa , 88100 , Catanzaro , Italy
| | - C Iacobucci
- Department of Pharmaceutical Chemistry & Bioanalytics , Institute of Pharmacy , Martin Luther University Halle-Wittenberg , 06120 Halle/Saale , Germany
| | - G Malgieri
- Department of Environmental , Biological and Pharmaceutical Sciences and Technologies , University of Campania "Luigi Vanvitelli" , Via Vivaldi 43 , 81100 Caserta , Italy
| | - G D'Abrosca
- Department of Environmental , Biological and Pharmaceutical Sciences and Technologies , University of Campania "Luigi Vanvitelli" , Via Vivaldi 43 , 81100 Caserta , Italy
| | - R Fattorusso
- Department of Environmental , Biological and Pharmaceutical Sciences and Technologies , University of Campania "Luigi Vanvitelli" , Via Vivaldi 43 , 81100 Caserta , Italy
| | - V G Nicoletti
- Dipartimento di Scienze Biomediche e Biotecnologiche (BIOMETEC) , sez. Biochimica medica , Università di Catania , Via Santa Sofia 97 , 95124 Catania , Italy
| | - D Sbardella
- Dipartimento di Scienze Cliniche e Medicina Traslazionale , Università di Roma Tor Vergata , Via Montpellier 1 , 00133 , Roma , Italy
| | - G R Tundo
- Dipartimento di Scienze Cliniche e Medicina Traslazionale , Università di Roma Tor Vergata , Via Montpellier 1 , 00133 , Roma , Italy
| | - M Coletta
- Dipartimento di Scienze Cliniche e Medicina Traslazionale , Università di Roma Tor Vergata , Via Montpellier 1 , 00133 , Roma , Italy
| | - L Pirone
- Consiglio Nazionale delle Ricerche , Istituto di Biostrutture e Bioimmagini , Via Mezzocannone, 16 , Naples I-80134 , Italy
| | - E Pedone
- Consiglio Nazionale delle Ricerche , Istituto di Biostrutture e Bioimmagini , Via Mezzocannone, 16 , Naples I-80134 , Italy
| | - D Calcagno
- Dipartimento di Scienze Chimiche , Università di Catania , V.le Andrea Doria 6 , 95125 Catania , Italy .
| | - G Grasso
- Dipartimento di Scienze Chimiche , Università di Catania , V.le Andrea Doria 6 , 95125 Catania , Italy .
| | - D Milardi
- Consiglio Nazionale delle Ricerche , Istituto di Biostrutture e Bioimmagini , Via P. Gaifami 18 , 95126 Catania , Italy .
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Bosso A, Pirone L, Gaglione R, Pane K, Del Gatto A, Zaccaro L, Di Gaetano S, Diana D, Fattorusso R, Pedone E, Cafaro V, Haagsman HP, van Dijk A, Scheenstra MR, Zanfardino A, Crescenzi O, Arciello A, Varcamonti M, Veldhuizen EJA, Di Donato A, Notomista E, Pizzo E. A new cryptic host defense peptide identified in human 11-hydroxysteroid dehydrogenase-1 β-like: from in silico identification to experimental evidence. Biochim Biophys Acta Gen Subj 2017; 1861:2342-2353. [PMID: 28454736 DOI: 10.1016/j.bbagen.2017.04.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 04/05/2017] [Accepted: 04/24/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND Host defence peptides (HDPs) are evolutionarily conserved components of innate immunity. Human HDPs, produced by a variety of immune cells of hematopoietic and epithelial origin, are generally grouped into two families: beta structured defensins and variably-structured cathelicidins. We report the characterization of a very promising cryptic human HDP, here called GVF27, identified in 11-hydroxysteroid dehydrogenase-1 β-like protein. METHODS Conformational analysis of GVF27 and its propensity to bind endotoxins were performed by NMR, Circular Dichroism, Fluorescence and Dynamic Light Scattering experiments. Crystal violet and WST-1 assays, ATP leakage measurement and colony counting procedures were used to investigate antimicrobial, anti-biofilm, cytotoxicity and hemolytic activities. Anti-inflammatory properties were evaluated by ELISA. RESULTS GVF27 possesses significant antibacterial properties on planktonic cells and sessile bacteria forming biofilm, as well as promising dose dependent abilities to inhibit attachment or eradicate existing mature biofilm. It is unstructured in aqueous buffer, whereas it tends to assume a helical conformation in mimic membrane environments as well as it is able to bind lipopolysaccharide (LPS) and lipoteichoic acid (LTA). Notably it is not toxic towards human and murine cell lines and triggers a significant innate immune response by attenuating expression levels of pro-inflammatory interleukins and release of nitric oxide in LPS induced macrophages. CONCLUSION Human GVF27 may offer significant advantages as leads for the design of human-specific therapeutics. GENERAL SIGNIFICANCE Human cryptic host defence peptides are naturally no immunogenic and for this they are a real alternative for solving the lack of effective antibiotics to control bacterial infections.
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Affiliation(s)
- A Bosso
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; Department of Infectious Diseases and Immunology, Utrecht University, 3584 CS Utrecht, Holland
| | | | - R Gaglione
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy; Department of Infectious Diseases and Immunology, Utrecht University, 3584 CS Utrecht, Holland
| | - K Pane
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | | | | | | | - D Diana
- IBB, CNR, 80134 Naples, Italy
| | - R Fattorusso
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", I-81100 Caserta, Italy
| | | | - V Cafaro
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - H P Haagsman
- Department of Infectious Diseases and Immunology, Utrecht University, 3584 CS Utrecht, Holland
| | - A van Dijk
- Department of Infectious Diseases and Immunology, Utrecht University, 3584 CS Utrecht, Holland
| | - M R Scheenstra
- Department of Infectious Diseases and Immunology, Utrecht University, 3584 CS Utrecht, Holland
| | - A Zanfardino
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - O Crescenzi
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - A Arciello
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - M Varcamonti
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - E J A Veldhuizen
- Department of Infectious Diseases and Immunology, Utrecht University, 3584 CS Utrecht, Holland
| | - A Di Donato
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - E Notomista
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - E Pizzo
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy.
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28
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Walenga J, Escalante V, Duebner B, Pemsl G, Boyes E, Bailey J, Casillian A, Pedone E, Jeske W, Heroux A, Coglianese E, Schwartz J, Bakhos M. Prediction of Hemostatic Dysfunction in Patients Implanted with the HeartMate II LVAD. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Jekerle V, Schröder C, Pedone E. Legal basis of the Advanced Therapies Regulation. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2009; 53:4-8. [DOI: 10.1007/s00103-009-0990-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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D'Ambrosia K, De Simone G, Pedone E, Rossi M, Bartolucci S, Pedone C. Crystal structure of a protein disulfide oxidoreductase from Aquifex aeolicus. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305091221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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31
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Fletcher J, Godwin A, Pedone E, Jahangeer B, Buckton G, Brocchini S. The use of precursor polymers to prepare new excipients. J Drug Deliv Sci Technol 2005. [DOI: 10.1016/s1773-2247(05)50052-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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32
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Pedone E, Cavallaro G, Richardson SC, Duncan R, Giammona G. alpha,beta-poly(asparthylhydrazide)-glycidyltrimethylammonium chloride copolymers (PAHy-GTA): novel polymers with potential for DNA delivery. J Control Release 2001; 77:139-53. [PMID: 11689267 DOI: 10.1016/s0168-3659(01)00459-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Hydrophilic polycations form complexes when mixed with plasmids. Following functionalisation with glycidyltrimethylammonium chloride (GTA) alpha,beta-poly(asparthylhydrazide) (PAHy), a water-soluble synthetic macromolecule, becomes polycationic and potentially useful for systemic gene delivery. Initially the biocompatibility of PAHy and PAHy-GTA derivatives with different degrees of positive charge substitution were studied and it was shown that PAHy-GTA was neither haemolytic nor cytotoxicity up to 1 mg/ml. After intravenous injection (125)I-labelled PAHy-GTA derivative containing 46 mol% (PAHy-GTA(b)) of trimethylammonium groups did not accumulate in the liver (4.1+/-0.9% of the recovered dose after 1 h) but was subjected to renal excretion (45+/-21% of the recovered dose was in the kidneys after 1 h). PAHy-GTA formed complexes with DNA (gel retardation) and they protected against degradation by DNase II. Finally the ability of the PAHy-GTA(b) derivative to mediate the transfection of HepG2 cells using the marker gene beta-galactosidase was studied. The optimum plasmid/polymer mass ratio was examined in comparison to LipofectACE, Lipofectin and polyethylenimine.
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Affiliation(s)
- E Pedone
- Dipartimento di Chimica e Tecnologie Farmaceutiche, Universita' degli Studi di Palermo, via Archirafi 32, 90123 Palermo, Italy
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33
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Caliceti P, Quarta SM, Veronese FM, Cavallaro G, Pedone E, Giammona G. Synthesis and biopharmaceutical characterisation of new poly(hydroxyethylaspartamide) copolymers as drug carriers. Biochim Biophys Acta 2001; 1528:177-86. [PMID: 11687305 DOI: 10.1016/s0304-4165(01)00191-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Four new poly(hydroxyethylaspartamide)-based copolymers bearing (a) poly(ethylene glycol) 2000, (b) poly(ethylene glycol) 5000, (c) poly(ethylene glycol) 2000 and hexadecylalkyl, (d) poly(ethylene glycol) 5000 and hexadecylalkyle, as pendant groups were synthesised. The copolymers were obtained by partial aminolysis of polysuccinimide with poly(ethylene glycol) and hexadecylalkyl amino derivatives followed by reaction with ethanolamine. Naked polyhydroxyaspartamide was obtained by polysuccinimide reaction with ethanolamine. The nuclear magnetic resonance, infrared, light scattering and elemental analysis allowed for the extensive physico-chemical characterisation of the carriers. The molecular mass of all the polymers was in the range of 27000-34000 Da, and the polydispersivity was in the range of 1.5-1.7. By intravenous injection to mice bearing a solid tumour, all the polymeric carriers displayed a bi-compartmental pharmacokinetic behaviour. Both the poly(ethylene glycol) and the hexadecylalkyle conjugation prolonged and enhanced the distribution phase of poly(hydroxyethylaspartamide). The poly(ethylene glycol) conjugation was found to promote the carrier elimination by kidney ultrafiltration and to prevent partially the accumulation in the spleen and in the liver. The poly(ethylene glycol)/hexadecylalkyle conjugates localised preferentially in the liver were over 30% of the dose/g of tissue was determined after 144 h from administration. In the tumour all the polymers displayed a relevant accumulation that significantly increased throughout the time to reach high concentrations after 24 h. In particular, the poly(ethylene glycol)/hexadecylalkyle conjugates achieved a concentration of 15-25% of the dose/g of tissue after 24 h from administration that was maintained up to 144 h.
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Affiliation(s)
- P Caliceti
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Padova, Padua, Italy
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Pedone E, Saviano M, Rossi M, Bartolucci S. A single point mutation (Glu85Arg) increases the stability of the thioredoxin from Escherichia coli. Protein Eng 2001; 14:255-60. [PMID: 11391017 DOI: 10.1093/protein/14.4.255] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Glu85 in the Escherichia coli thioredoxin, which is localized in the loop between beta4 and beta5, was substituted with the Arg present in the corresponding position in Bacillus acidocaldarius thioredoxin. This suggested that it could play an important role in the structure and thermostability of this protein owing to its involvement in numerous interactions. The effects of the mutation on the biophysical properties were analysed by circular dichroism, spectrofluorimetry and limited proteolysis, supported by molecular dynamics data. As modelling predicted, an increase in stability for E85R due to additional H-bonds between the beta5 and alpha4 regions was observed.
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Affiliation(s)
- E Pedone
- Dipartimento di Chimica Biologica, Università di Napoli 'Federico II', Via Mezzocannone 16, 80134 Naples, Italy
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Nicastro G, De Chiara C, Pedone E, Tatò M, Rossi M, Bartolucci S. NMR solution structure of a novel thioredoxin from Bacillus acidocaldarius possible determinants of protein stability. Eur J Biochem 2000; 267:403-13. [PMID: 10632710 DOI: 10.1046/j.1432-1327.2000.01015.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The thioredoxin (Trx) from Bacillus acidocaldarius (BacTrx), an eubacterium growing optimally at 333 K, is the first Trx described to date from a moderate thermophilic source. To understand the molecular basis of its thermostability, the three-dimensional structure in the oxidized form was determined by NMR methods. A total of 2276 1H-NMR derived distance constraints along with 23 hydrogen-bonds, 72 phi and 27 chi1 torsion angle restraints, were used in a protocol employing simulated annealing followed by restrained molecular dynamics and restrained energy minimization. BacTrx consists of a well-defined core region of five strands of beta-sheet, surrounded by four exposed alpha-helices, features shared by other members of the thioredoxin family. The BacTrx 3D structure was compared with the Escherichia coli Trx (EcTrx) determined by X-ray crystallographic diffraction, and a number of structural differences were observed that may contribute to its thermostabilty. The results of structural analysis indicated that protein stability is due to cumulative effects, the main factor being an increased number of ionic interactions cross-linking different secondary structural elements and clamping the C-terminal alpha-helix to the core of the protein.
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Affiliation(s)
- G Nicastro
- Istituto di Chimica Biologica, Università degli Studi di Parma, Italy
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37
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Pedone E, Cannio R, Saviano M, Rossi M, Bartolucci S. Prediction and experimental testing of Bacillus acidocaldarius thioredoxin stability. Biochem J 1999; 339 ( Pt 2):309-17. [PMID: 10191261 PMCID: PMC1220159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
In order to investigate further the determinants of protein stability, four mutants of thioredoxin from Bacillus acidocaldarius were designed: K18G, R82E, K18G/R82E, and D102X, in which the last four amino acids were deleted. The mutants were constructed on the basis of molecular dynamic studies and the prediction of the structure of thioredoxin from B. acidocaldarius, performed by a comparative molecular modelling technique using Escherichia coli thioredoxin as the reference protein. The mutants obtained by PCR strategy were expressed in E. coli and then characterized. CD spectroscopy, spectrofluorimetry and thermodynamic comparative studies permitted comparison of the relative physicochemical behaviour of the four proteins with that of the wild-type protein. As predicted for the molecular dynamic analysis at 500 K in vacuo, the wild-type structure was more stable than that of the mutants; in fact the Tm of the four proteins showed a decrease of about 15 degrees C for the double and the truncated mutants, and a decrease of about 12 degrees C for the single mutants. A difference in the resistance of the proteins to denaturants such as guanidine HCl and urea was revealed; the wild-type protein always proved to be the most resistant. The results obtained show the importance of hydrogen bonds and ion pairs in determining protein stability and confirm that simulation methods are able to direct protein engineering in site-directed mutagenesis.
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Affiliation(s)
- E Pedone
- Dipartimento di Chimica Organica e Biologica, Università degli Studi di Napoli 'Federico II', via Mezzocannone 16, 80134 Naples, Italy
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Livrea MA, Tesoriere L, Maggio A, D'Arpa D, Pintaudi AM, Pedone E. Oxidative modification of low-density lipoprotein and atherogenetic risk in beta-thalassemia. Blood 1998; 92:3936-42. [PMID: 9808587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
We investigated the oxidative state of low-density lipoprotein (LDL) in patients with beta-thalassemia to determine whether there was an association with atherogenesis. Conjugated diene lipid hydroperoxides (CD) and the level of major lipid antioxidants in LDL, as well as modified LDL protein, were evaluated in 35 beta-thalassemia intermedia patients, aged 10 to 60, and compared with age-matched healthy controls. Vitamin E and beta-carotene levels in LDL from patients were 45% and 24% of that observed in healthy controls, respectively. In contrast, the mean amount of LDL-CD was threefold higher and lysil residues of apo B-100 were decreased by 17%. LDL-CD in thalassemia patients showed a strong inverse correlation with LDL vitamin E (r = -0.784; P <.0001), while a negative trend was observed with LDL-beta-carotene (r = -0.443; P =.149). In the plasma of thalassemia patients, malondialdehyde (MDA), a byproduct of lipid peroxidation, was increased by about twofold, while vitamin E showed a 52% decrease versus healthy controls. LDL-CD were inversely correlated with plasma vitamin E (r = -0.659; P <.0001) and correlated positively with plasma MDA (r = 0.621; P <. 0001). Plasma ferritin was positively correlated with LDL-CD (r = 0.583; P =.0002). No correlation was found between the age of the patients and plasma MDA or LDL-CD. The LDL from thalassemia patients was cytotoxic to cultured human fibroblasts and cytotoxicity increased with the content of lipid peroxidation products. Clinical evidence of mild to severe vascular complications in nine of the patients was then matched with levels of LDL-CD, which were 36% to 118% higher than the mean levels of the patients. Our results could account for the incidence of atherogenic vascular diseases often reported in beta-thalassemia patients. We suggest that the level of plasma MDA in beta-thalassemia patients may represent a sensitive index of the oxidative status of LDL in vivo and of its potential atherogenicity.
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Affiliation(s)
- M A Livrea
- Istituto di Farmacologia e Farmacognosia e Dipartimento di Chimica e Tecnologie Farmaceutiche, Università di Palermo, Palermo; and the Servizio Talassemia, Ospedale Cervello, Palermo. Italy
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Abstract
The alteration of the oxidant/antioxidant balance may affect the susceptibility of low density lipoproteins (LDL) to oxidation in haemolytic disorders such as thalassemia. Thirty patients affected by beta-thalassemia intermedia were examined, and compared with age-matched healthy controls. The mean amount of vitamin E in the thalassemic LDL was lower than control (p < 0.0001), either when it was calculated on the base of LDL protein (61% decrease) or cholesterol (25% decrease). The LDL resistance to Cu2+-induced oxidation, evaluated as the length of the lag phase before the onset of conjugated diene (CD) lipid hydroperoxide production, was 20% lower than control. Other parameters of LDL susceptibility to oxidation, such as the rate of lipid peroxidation, Rp, and the total amount of conjugated dienes produced, CDmax, were only slightly lower than control, which can be explained by a lower content of peroxidable lipids in the thalassemic LDL. Total LDL cholesterol was 1.08 x 10(3) and 2.07 x 10(3) mol/mol LDL in thalassemic and in control LDL, respectively. The length of the lag phase in thalassemic LDL shows a strongly positive correlation with its vitamin E content (r = 0.732; p < 0.0001). The r2-value of 0.53 provides evidence that more than 50% of the lag phase is determined by vitamin E. Oxidizability of LDL lipids may explain 22-24% of the lag phase, as calculated by the inverse correlation between the length of the lag phase and CDmax (r = -0.474; p = 0.008; r2 = 0.22) and Rp (r = -0.499; p = 0.005; r2 = 0.24). In multiple regression analysis, the lag phase was predictable to 66% by vitamin E plus CDmax, and to 60% by vitamin E plus Rp. Plasma vitamin E was 53% lower in thalassemia patients compared to control and positively correlated with vitamin E in the LDL (r = 0.677; p < 0.0001). None of the correlations above were observed in control subjects. In conclusion, beta-thalassemia is associated with very low levels of vitamin E in plasma and in LDL, a condition that renders these particles more susceptible to in vitro oxidative modification and may account for atherogenesis-related vascular diseases described in thalassemia. The present data on a statistically significant correlation between abnormally low vitamin E and oxidizability of LDL contribute substantially to the hypothesis that vitamin E is a pathophysiologically important determinant of antioxidative protection of LDL.
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Affiliation(s)
- L Tesoriere
- Istituto di Farmacologia e Farmacognosia, Università di Palermo, Italy
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Bartolucci S, Guagliardi A, Pedone E, De Pascale D, Cannio R, Camardella L, Rossi M, Nicastro G, de Chiara C, Facci P, Mascetti G, Nicolini C. Thioredoxin from Bacillus acidocaldarius: characterization, high-level expression in Escherichia coli and molecular modelling. Biochem J 1997; 328 ( Pt 1):277-85. [PMID: 9359865 PMCID: PMC1218918 DOI: 10.1042/bj3280277] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The thioredoxin (Trx) from Bacillus acidocaldarius (BacTrx) was purified to homogeneity by anion-exchange chromatography and gel-filtration chromatography, based on its ability to catalyse the dithiothreitol-dependent reduction of bovine insulin disulphides. The protein has a molecular mass of 11577 Da, determined by electrospray mass spectrometry, a pI of 4.2, and its primary structure was obtained by automated Edman degradation after cleavage with trypsin and cyanogen bromide. The sequences of known bacterial Trxs were aligned at the active site: BacTrx has an identity ranging from 45 to 53% with all sequences except that of the unusual Anabaena strain 7120 Trx (37% identity). The gene coding for BacTrx was isolated by a strategy based on PCR gene amplification and cloned in a plasmid downstream of a lac-derived promoter sequence; the recombinant clone was used as the expression vector for Escherichia coli. The expression was optimized by varying both the time of cell growth and the time of exposure to the inducer isopropyl beta-d-thiogalactoside; expressed BacTrx represents approx. 5% of the total cytosolic protein. CD spectra and differential scanning calorimetry measurements demonstrated that BacTrx is endowed with a higher conformational heat stability than the Trx from E. coli. Nanogravimetry experiments showed a lower content of bound water in BacTrx than in E. coli Trx, and a transition temperature approx. 10 degrees C higher for BacTrx. The three-dimensional model of the oxidized form of BacTrx was constructed by a comparative molecular modelling technique, using E. coli Trx and Anabaena strain 7120 Trx as reference proteins. Increased networks of ion-pairs and shorter loops emerged as major features of the BacTrx structure compared with those of the template proteins. The findings are discussed in the light of the current knowledge about molecular determinants of protein stability.
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Affiliation(s)
- S Bartolucci
- Dipartimento di Chimica Organica e Biologica, Università 'Federico II' di Napoli, Italy
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