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Publication Detail
Exogenous TERC alone can enhance proliferative potential, telomerase activity and telomere length in lymphocytes from dyskeratosis congenita patients
  • Publication Type:
    Journal article
  • Publication Sub Type:
  • Authors:
    Kirwan M, Beswick R, Vulliamy T, Nathwani AC, Walne AJ, Casimir C, Dokal I
  • Publication date:
  • Pagination:
    771, 781
  • Journal:
  • Volume:
  • Issue:
  • Keywords:
    administration & dosage, Adult, B-Lymphocytes, Cell Line, Cell Proliferation, Cells,Cultured, Dyskeratosis Congenita, Enzyme Activation, enzymology, Female, Gene Expression, Gene Therapy, Genetic Vectors, genetics, Humans, immunology, Lentivirus, Male, metabolism, methods, mortality, pathology, Rna, T-Lymphocytes, Telomerase, Telomere, therapy, Transduction,Genetic, ultrastructure, Young Adult
  • Author URL:
  • Notes:
    DA - 20090203 IS - 1365-2141 (Electronic) IS - 0007-1048 (Linking) LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't RN - 0 (telomerase RNA) RN - 63231-63-0 (RNA) RN - EC (Telomerase) SB - IM
Dyskeratosis congenita (DC) is an inherited multi-system disorder characterised by muco-cutaneous abnormalities, bone marrow failure and a predisposition to malignancy. Bone marrow failure is the principal cause of mortality and is thought to be the result of premature cell death in the haematopoietic compartment because DC cells age prematurely and tend to have short telomeres. DC is genetically heterogeneous and patients have mutations in genes that encode components of the telomerase complex (DKC1, TERC, TERT, NOP10 and NHP2), and telomere shelterin complex (TINF2), both important in telomere maintenance. Here, we transduced primary T lymphocytes and B lymphocyte lines established from patients with TERC and DKC1 mutations with wild type TERC-bearing lentiviral vectors. We found that transduction with exogenous TERC alone was capable of increasing telomerase activity in mutant T lymphocytes and B lymphocyte lines and improved the survival and thus overall growth of B-lymphocyte lines over a prolonged period, regardless of their disease mutation. Telomeres in TERC-treated lines were longer than in the untreated cultures. This is the first study of its kind in DC lymphocytes and the first to demonstrate that transduction with TERC alone can improve cell survival and telomere length without the need for exogenous TERT
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