Characterization of distal airway stem-like cells expressing N-terminally truncated p63 and thyroid transcription factor-1 in the human lung.
Distal airway stem cells (DASCs) in the mouse lung can differentiate into bronchioles and alveoli. However, it remains unclear whether the same stem cells exist in the human lung. Here, we found that human lung epithelial (HuL) cells, derived from normal, peripheral lung tissue, in monolayer, mostly express both the N-terminally truncated isoform of p63 (∆Np63), a marker for airway basal cells, and thyroid transcription factor-1 (TTF-1), a marker for alveolar epithelial cells, even though these two molecules are usually expressed in a mutually exclusive way. Three-dimensionally cultured HuL cells differentiated to form bronchiole-like and alveolus-like organoids. We also uncovered a few bronchiolar epithelial cells expressing both ∆Np63 and TTF-1 in the human lung, suggesting that these cells are the cells of origin for HuL cells. Taken together, ΔNp63+ TTF-1+ peripheral airway epithelial cells are possibly the human counterpart of mouse DASCs and may offer potential for future regenerative medicine.
['Tanaka|Yusuke|Y|', 'Yamaguchi|Miki|M|', 'Hirai|Sachie|S|', 'Sumi|Toshiyuki|T|', 'Tada|Makoto|M|', 'Saito|Atsushi|A|', 'Chiba|Hirofumi|H|', 'Kojima|Takashi|T|', 'Watanabe|Atsushi|A|', 'Takahashi|Hiroki|H|', 'Sakuma|Yuji|Y|']
D000818:Animals D055745:Bronchioles D002454:Cell Differentiation D002460:Cell Line D018507:Gene Expression Regulation, Developmental D006801:Humans D008168:Lung D051379:Mice D011650:Pulmonary Alveoli D044968:Regenerative Medicine D013234:Stem Cells D000074482:Thyroid Nuclear Factor 1 D014157:Transcription Factors D025521:Tumor Suppressor Proteins
Lung Distal airway stem cell (DASC) ∆Np63 3D culture Thyroid transcription factor 1 (TTF-1)