Abstract:
:Patients with laryngeal disorders may have severe morbidity relating to swallowing, vocalization, and respiratory function, for which conventional therapies are suboptimal. A tissue-engineered approach would aim to restore the vocal folds and maintain respiratory function while limiting the extent of scarring in the regenerated tissue. Under Good Laboratory Practice conditions, we decellularized porcine larynges, using detergents and enzymes under negative pressure to produce an acellular scaffold comprising cartilage, muscle, and mucosa. To assess safety and functionality before clinical trials, a decellularized hemilarynx seeded with human bone marrow-derived mesenchymal stem cells and a tissue-engineered oral mucosal sheet was implanted orthotopically into six pigs. The seeded grafts were left in situ for 6 months and assessed using computed tomography imaging, bronchoscopy, and mucosal brushings, together with vocal recording and histological analysis on explantation. The graft caused no adverse respiratory function, nor did it impact swallowing or vocalization. Rudimentary vocal folds covered by contiguous epithelium were easily identifiable. In conclusion, the proposed tissue-engineered approach represents a viable alternative treatment for laryngeal defects. Stem Cells Translational Medicine 2017;6:677-687.
journal_name
Stem Cells Transl Medjournal_title
Stem cells translational medicineauthors
Ansari T,Lange P,Southgate A,Greco K,Carvalho C,Partington L,Bullock A,MacNeil S,Lowdell MW,Sibbons PD,Birchall MAdoi
10.5966/sctm.2016-0130subject
Has Abstractpub_date
2017-02-01 00:00:00pages
677-687issue
2eissn
2157-6564issn
2157-6580journal_volume
6pub_type
杂志文章abstract::Basic and translational research on lung biology has discovered multiple progenitor cell types, specialized or facultative, responsible for turnover, renewal, and repair. Isolation of populations of resident lung progenitor cells (LPCs) has been described by multiple protocols, and some have been successfully applied ...
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