In patients with Lynch syndrome, germline mutations in DNA mismatch repair (MMR) genes cause a high risk of developing a broad spectrum of cancers. To date, the management of patients with Lynch syndrome has represented a major challenge because of large variations in age at cancer onset. Several factors, including genetic anticipation, have been proposed to explain this phenotypic heterogeneity, but the molecular mechanisms remain unknown. Telomere shortening is a common event in tumorigenesis and also has been observed in different familial cancers. In this study, the authors investigated the possibility of a relation between telomere length and cancer onset in patients with Lynch syndrome.The mean telomere length was measured using quantitative polymerase chain reaction in peripheral blood samples from a control group of 50 individuals, from 31 unaffected mutation carriers, and from 43 affected patients, and the results were correlated with both gene mutation and cancer occurrence. In affected patients, telomere attrition was correlated with age at cancer onset. In all patients, a t test was used to assess the linearity of the regression.A significant correlation between telomere length and age was observed in both affected and unaffected mutation carriers (P = .0016 and P = .004, respectively) and in mutS homolog 2 (MSH2) mutation carriers (P = .0002) but not in mutL homolog 1 (MLH1) mutation carriers. Telomere attrition was correlated significantly with age at onset in MSH2 carriers (P = .004), whereas an opposite trend toward longer telomeres in patients with delayed onset was observed in MLH1 carriers.The current data suggested that telomere dynamics differ between MLH1 and MSH2 mutation carriers. It is possible that subtle, gene-specific mechanisms can be linked to cancer onset and anticipation in patients with Lynch syndrome.

Analysis of telomere dynamics in peripheral blood cells from patients with Lynch syndrome / Bozzao, C; Lastella, P; PONZ DE LEON, Maurizio; Pedroni, Monica; Di Gregorio, C; D'Ovidio, Fd; Resta, N; Prete, F; Guanti, G; Stella, A.. - In: CANCER. - ISSN 1045-7410. - ELETTRONICO. - 117:18(2011), pp. 4325-4335. [10.1002/cncr.26022]

Analysis of telomere dynamics in peripheral blood cells from patients with Lynch syndrome.

PONZ DE LEON, Maurizio;PEDRONI, Monica;
2011

Abstract

In patients with Lynch syndrome, germline mutations in DNA mismatch repair (MMR) genes cause a high risk of developing a broad spectrum of cancers. To date, the management of patients with Lynch syndrome has represented a major challenge because of large variations in age at cancer onset. Several factors, including genetic anticipation, have been proposed to explain this phenotypic heterogeneity, but the molecular mechanisms remain unknown. Telomere shortening is a common event in tumorigenesis and also has been observed in different familial cancers. In this study, the authors investigated the possibility of a relation between telomere length and cancer onset in patients with Lynch syndrome.The mean telomere length was measured using quantitative polymerase chain reaction in peripheral blood samples from a control group of 50 individuals, from 31 unaffected mutation carriers, and from 43 affected patients, and the results were correlated with both gene mutation and cancer occurrence. In affected patients, telomere attrition was correlated with age at cancer onset. In all patients, a t test was used to assess the linearity of the regression.A significant correlation between telomere length and age was observed in both affected and unaffected mutation carriers (P = .0016 and P = .004, respectively) and in mutS homolog 2 (MSH2) mutation carriers (P = .0002) but not in mutL homolog 1 (MLH1) mutation carriers. Telomere attrition was correlated significantly with age at onset in MSH2 carriers (P = .004), whereas an opposite trend toward longer telomeres in patients with delayed onset was observed in MLH1 carriers.The current data suggested that telomere dynamics differ between MLH1 and MSH2 mutation carriers. It is possible that subtle, gene-specific mechanisms can be linked to cancer onset and anticipation in patients with Lynch syndrome.
2011
117
18
4325
4335
Analysis of telomere dynamics in peripheral blood cells from patients with Lynch syndrome / Bozzao, C; Lastella, P; PONZ DE LEON, Maurizio; Pedroni, Monica; Di Gregorio, C; D'Ovidio, Fd; Resta, N; Prete, F; Guanti, G; Stella, A.. - In: CANCER. - ISSN 1045-7410. - ELETTRONICO. - 117:18(2011), pp. 4325-4335. [10.1002/cncr.26022]
Bozzao, C; Lastella, P; PONZ DE LEON, Maurizio; Pedroni, Monica; Di Gregorio, C; D'Ovidio, Fd; Resta, N; Prete, F; Guanti, G; Stella, A.
File in questo prodotto:
File Dimensione Formato  
Analysis of telomere Bozzao Lastella Ponz de Leon.pdf

Solo gestori archivio

Tipologia: Versione pubblicata dall'editore
Dimensione 446.23 kB
Formato Adobe PDF
446.23 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/708737
Citazioni
  • ???jsp.display-item.citation.pmc??? 6
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 11
social impact