Biological characteristics of a cell subpopulation in tongue squamous cell carcinoma.
OBJECTIVE
To isolate the CD133+CD44+ cells from human tongue squamous cell carcinoma (TSCC) Tca8113 cell line and investigate biological characteristics of them.


METHODS
Immunomagnetic microbeads were applied to sort the CD133+CD44+ cells. Flow cytometry was used to detect isolation purity. The proliferation, clone-formation efficiencies, invasion and migration, gene expressions, and tumor-formation abilities were analyzed among CD133+CD44+, CD133-CD44-, and total population of cells.


RESULTS
The average purities of CD133+ and CD44+ cells reached 97.3% and 98.7%, respectively. The proliferation of CD133+CD44+ cells was significantly higher than the other two groups. The clone-forming efficiency of three groups was 70%, 8%, and 14%, respectively. The average invaded and migrated cell numbers of CD133+CD44+ and total population cells were 132 and 36.2, 311.6, and 156.2, respectively. The expressions of Bcl-2 and Sox2 in CD133+CD44+ cells were significantly higher than those in total population cells. A total of 10(4) CD133+CD44+ cells could form secondary tumors in nude mice, while the total population group needed 10(6) cells.


CONCLUSIONS
The CD133+CD44+ subpopulation cells possess stem-like characteristics. They appear to be the potential targets for future biology therapy of human TSCC.
Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China.
Y
Y
Sun
J
J
Han
Y
Y
Lu
X
X
Yang
M
M
Fan
D000071916:AC133 Antigen; D000818:Animals; D015703:Antigens, CD / Q000276:immunology* / Q000302:isolation & purification; D000951:Antigens, Neoplasm / Q000096:biosynthesis / Q000235:genetics / Q000302:isolation & purification*; D002294:Carcinoma, Squamous Cell / Q000276:immunology / Q000378:metabolism / Q000473:pathology*; D045744:Cell Line, Tumor; D049109:Cell Proliferation; D002469:Cell Separation; D002999:Clone Cells; D005434:Flow Cytometry; D006023:Glycoproteins / Q000276:immunology* / Q000302:isolation & purification; D006801:Humans; D018960:Hyaluronan Receptors / Q000276:immunology* / Q000302:isolation & purification; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D014411:Neoplastic Stem Cells / Q000166:cytology* / Q000276:immunology; D010455:Peptides / Q000276:immunology* / Q000302:isolation & purification; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000096:biosynthesis / Q000235:genetics / Q000302:isolation & purification; D055748:SOXB1 Transcription Factors / Q000096:biosynthesis / Q000235:genetics / Q000302:isolation & purification; D014062:Tongue Neoplasms / Q000276:immunology / Q000378:metabolism / Q000473:pathology*
D000071916:AC133 Antigen; D015703:Antigens, CD; D000951:Antigens, Neoplasm; C497483:CD44 protein, human; D006023:Glycoproteins; D018960:Hyaluronan Receptors; C000606023:PROM1 protein, human; D010455:Peptides; C000606024:Prom1 protein, mouse; D019253:Proto-Oncogene Proteins c-bcl-2; C527782:SOX2 protein, human; D055748:SOXB1 Transcription Factors