Volume 11, Issue 3 pp. 394-400

Activity of mannose-binding lectin in centenarians

Rossella Tomaiuolo

Rossella Tomaiuolo

CEINGE-Biotecnologie Avanzate scarl, Naples, Italy

Dipartimento di Biochimica e Biotecnologie Mediche, Università di Napoli Federico II, Naples, Italy

Search for more papers by this author
Anna Ruocco

Anna Ruocco

CEINGE-Biotecnologie Avanzate scarl, Naples, Italy

Dipartimento di Biochimica e Biotecnologie Mediche, Università di Napoli Federico II, Naples, Italy

Search for more papers by this author
Chiara Salapete

Chiara Salapete

CEINGE-Biotecnologie Avanzate scarl, Naples, Italy

Dipartimento di Biochimica e Biotecnologie Mediche, Università di Napoli Federico II, Naples, Italy

Search for more papers by this author
Ciriaco Carru

Ciriaco Carru

Dipartimento di Scienze Biomediche, Università di Sassari, Sassari, Italy

Search for more papers by this author
Giovannella Baggio

Giovannella Baggio

Azienda Ospedaliera di Padova, Padua, Italy

Search for more papers by this author
Claudio Franceschi

Claudio Franceschi

Dipartimento di Patologia Sperimentale, Università di Bologna, Bologna, Italy

Search for more papers by this author
Angelo Zinellu

Angelo Zinellu

Dipartimento di Scienze Biomediche, Università di Sassari, Sassari, Italy

Search for more papers by this author
James Vaupel

James Vaupel

Max Planck Institute for Demographic Research, Rostock, Germany

Search for more papers by this author
Chiara Bellia

Chiara Bellia

Cattedra di Biochimica Clinica, Dipartimento di Biopatologia e Biotecnologie Mediche e Forensi, Università di Palermo, Palermo, Italy

Search for more papers by this author
Bruna Lo Sasso

Bruna Lo Sasso

Cattedra di Biochimica Clinica, Dipartimento di Biopatologia e Biotecnologie Mediche e Forensi, Università di Palermo, Palermo, Italy

Search for more papers by this author
Marcello Ciaccio

Marcello Ciaccio

Cattedra di Biochimica Clinica, Dipartimento di Biopatologia e Biotecnologie Mediche e Forensi, Università di Palermo, Palermo, Italy

Search for more papers by this author
Giuseppe Castaldo

Giuseppe Castaldo

CEINGE-Biotecnologie Avanzate scarl, Naples, Italy

Dipartimento di Biochimica e Biotecnologie Mediche, Università di Napoli Federico II, Naples, Italy

Search for more papers by this author
Luca Deiana

Luca Deiana

Dipartimento di Scienze Biomediche, Università di Sassari, Sassari, Italy

Azienda Ospedaliera Universitaria di Sassari, Sassari, Italy

Search for more papers by this author
First published: 12 January 2012
Citations: 40
Giuseppe Castaldo, CEINGE-Biotecnologie avanzate, via Gaetano Salvatore 486, 80145 Naples, Italy. Tel.: +39 081 3737 859; fax: +39 081 3737 808; e-mail: [email protected]
Luca Deiana, Dipartimento di Scienze Biomediche, Università di Sassari, Viale S. Pietro 43/B, 07100 Sassari, Italy. Tel.: +39 079 228275; fax: +39 079 228211; e-mail: [email protected]

Summary

We analyzed MBL2 gene variants in two cohorts of centenarians, octo-nonagenarians and nonagenarians, and in the general population, one from Sardinia Island (Italy), recruited in the frame of the AKea study, and another from Campania (southern Italy), to search for haplotypes related to longevity. We also assessed in vitro the effect of mannose-binding lectin (MBL) on various human cells at different stage of senescence. The frequency of high and null activity haplotypes was significantly lower, and the frequency of intermediate activity haplotype significantly higher in centenarians and in subjects between 80 and 99 years from both the cohorts as compared each to the general population from the same geographic area. Furthermore, serum MBL concentration (also after normalization to serum albumin) was significantly lower in centenarians and in octo- and nonagenarians as compared to the general population, suggesting that intermediate MBL haplotype/activity may be protective. We also demonstrated that in vitro MBL protein bound to senescent IMR90 fibroblasts thereby causing cell lysis, but not to other types of cycle-arrested cells not in senescence. This implicates a novel role of MBL in the clearance of senescent cells.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.