γδ T cells are a group of effectors "natural killer" of the innate immune system, which represented an interesting object of study in recent years. The Department of Surgical, Oncology and Dentistry of the University Hospital of Palermo, active for years in respect of scientific research, has recently conducted a study aimed at understanding the potential effect of this immunotherapeutic lymphocyte population to the advanced-stage melanomas. Based on the classification of the American Joint Committee on Cancer ( AJCC ) patients with stage IV malignant melanoma with metastatic cancer have a poor prognosis, with a low 5-year survival. Statistical data estimate that overall survival is less than 10 %, highlighting how few treatments are currently available and reasonably effective. The different therapeutic schemes proposed and approved for the treatment of metastatic melanoma (high-dose interleukin- 2 and chemotherapy) showed an overall response rate of 16 % and 7.5 %, with a low complete response and long-term survival. The study and analysis of the infiltrated peritumoral lymphocytes ( TIL) in patients with malignant melanoma and the pursuit of lymphocytes circulating in the blood stream will allow you to define the key role of γδ T cells, and the potential of the therapeutic treatment of metastatic malignant melanoma.
I linfociti T γδ sono un gruppo di effettori “natural killer” del sistema immunitario innato che hanno rappresentato un interessante oggetto di studio nel corso degli ultimi anni. Il Dipartimento di Discipline Chirurgiche, Oncologiche ed Odontostomatologiche del Policlinico Universitario di Palermo, da anni attivo nei confronti della ricerca scientifica, ha recentemente condotto uno studio mirato alla conoscenza del potenziale effetto immunoterapeutico di questa popolazione linfocitaria verso i melanomi in stadio avanzato. Sulla base della classificazione della American Joint Committee on Cancer (AJCC) i pazienti affetti da melanoma maligno in stadio IV con neoplasia metastatica hanno una prognosi infausta, con una bassa sopravvivenza a 5 anni. Dati statistici stimano che la sopravvivenza globale sia inferiore al 10%, evidenziando come pochi trattamenti terapeutici siano al momento disponibili e ragionevolmente efficaci. I diversi schemi terapeutici proposti ed approvati per il trattamento del melanoma metastatico (interleukina 2 ad alte dosi e chemioterapia) hanno mostrato un tasso di risposta globale del 16% e del 7,5%, con bassa risposta completa e sopravvivenza a lungo termine. Lo studio e l’analisi dell’infiltrato linfocitario peritumorale (TIL) nei pazienti affetti da melanoma maligno e la ricerca di linfociti circolanti nel torrente ematico permetterà di definire il ruolo chiave dei linfociti T γδ, e le potenzialità del trattamento terapeutico del melanoma maligno metastatico.
Liuzza, . (2014). Studio dell'infiltrato linfocitario peritumorale e dei linfociti circolanti in pazienti affetti da melanoma cutaneo.
Studio dell'infiltrato linfocitario peritumorale e dei linfociti circolanti in pazienti affetti da melanoma cutaneo
LIUZZA, Claudia
2014-02-17
Abstract
γδ T cells are a group of effectors "natural killer" of the innate immune system, which represented an interesting object of study in recent years. The Department of Surgical, Oncology and Dentistry of the University Hospital of Palermo, active for years in respect of scientific research, has recently conducted a study aimed at understanding the potential effect of this immunotherapeutic lymphocyte population to the advanced-stage melanomas. Based on the classification of the American Joint Committee on Cancer ( AJCC ) patients with stage IV malignant melanoma with metastatic cancer have a poor prognosis, with a low 5-year survival. Statistical data estimate that overall survival is less than 10 %, highlighting how few treatments are currently available and reasonably effective. The different therapeutic schemes proposed and approved for the treatment of metastatic melanoma (high-dose interleukin- 2 and chemotherapy) showed an overall response rate of 16 % and 7.5 %, with a low complete response and long-term survival. The study and analysis of the infiltrated peritumoral lymphocytes ( TIL) in patients with malignant melanoma and the pursuit of lymphocytes circulating in the blood stream will allow you to define the key role of γδ T cells, and the potential of the therapeutic treatment of metastatic malignant melanoma.File | Dimensione | Formato | |
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TesiDottorato - Claudia Liuzza.pdf
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