9 research outputs found
ΠΠΠ‘ΠΠ ΠΠ‘Π‘ΠΠ― ΠΠΠΠΠΠ’ΠΠΠ Π ΠΠ£ΠΠ¬Π’Π£Π ΠΠ₯ ΠΠΠΠ’ΠΠ ΠΠΠΠ’ΠΠΠΠΠΠ¬ΠΠ«Π₯ ΠΠΠ£Π₯ΠΠΠΠ Π§ΠΠΠΠΠΠΠ
Background. Cell cultures used as a models in studies of epithelial tumors, are obtained not only from solid tumors, but also from extracellular fluids. It is known that dissemination of ovarian cancer in the peritoneum and further growth of tumor cells in ascetic liquid is accompanied with the activation of epithelial-mesenchymal transition, and, therefore, cell cultures derived from extracellular fluids can have a distinct molecular phenotype from primary tumors.Objective: evaluation the βpersistenceβ of epithelial phenotype in breast and ovarian cancer cell cultures.Materials and methods. The cells obtained from pleural fluid (MCF-7, T-47D), colostrum (HBL-100), solid tumors (BT-474, HCC1937) of patients with breast cancer and ascitic fluid (SCOV- 3) of patients with ovarian cancer. The expression of cytokeratins and vimentin was evaluated using a quantitative immunofluorescence method associated with flow cytometry.Results. Vimentin expression in cells derived from extracellular fluids was not changed (line HBL-100), slightly decreased (SCOV-3 cells), or even was lost (MCF-7 and T-47D cells). HCC1937 cells obtained from solid tumor with expected low expression of vimentin acquired a molecular phenotype with a high expression of this mesenchymal marker. In breast cancer cells BT-474 derived from solid tumor a βpersistenceβ of epithelial phenotype was discovered.Conclusion. Quantitative assessment of the de novo expression of mesenchymal protein vimentin showed that the tumor phenotype within the organizm is not always realized in cells adapted to growth in culture, and is not always Β«strictlyΒ» epithelial, and this evidence must be considered with different kinds of molecular studies of epithelial cells in vitro.ΠΠ²Π΅Π΄Π΅Π½ΠΈΠ΅. ΠΠ»Π΅ΡΠΎΡΠ½ΡΠ΅ ΠΊΡΠ»ΡΡΡΡΡ, ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΠΌΡΠ΅ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΌΠΎΠ΄Π΅Π»ΡΠ½ΡΡ
ΠΏΡΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ ΠΎΠΏΡΡ
ΠΎΠ»Π΅ΠΉ ΡΠΏΠΈΡΠ΅Π»ΠΈΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠΈΡΡ
ΠΎΠΆΠ΄Π΅Π½ΠΈΡ, ΠΏΠΎΠ»ΡΡΠ°ΡΡ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ ΠΈΠ· ΡΓ³Π»ΠΈΠ΄Π½ΡΡ
Π½ΠΎΠ²ΠΎΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠΉ, Π½ΠΎ ΠΈ ΠΈΠ· ΡΠΊΡΡΡΠ°ΡΠ΅Π»Π»ΡΠ»ΡΡΠ½ΡΡ
ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ΅ΠΉ. ΠΠ·Π²Π΅ΡΡΠ½ΠΎ, ΡΡΠΎ Π΄ΠΈΡΡΠ΅ΠΌΠΈΠ½Π°ΡΠΈΡ ΡΠ°ΠΊΠ° ΡΠΈΡΠ½ΠΈΠΊΠΎΠ² ΠΏΠΎ Π±ΡΡΡΠΈΠ½Π΅ ΠΈ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠΈΠΉ ΡΠΎΡΡ ΠΎΠΏΡΡ
ΠΎΠ»Π΅Π²ΡΡ
ΠΊΠ»Π΅ΡΠΎΠΊ Π² Π°ΡΡΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠΈ ΡΠΎΠΏΡΠΎΠ²ΠΎΠΆΠ΄Π°ΡΡΡΡ Π°ΠΊΡΠΈΠ²Π°ΡΠΈΠ΅ΠΉ Π² Π½ΠΈΡ
ΡΠΏΠΈΡΠ΅Π»ΠΈΠ°Π»ΡΠ½ΠΎ-ΠΌΠ΅Π·Π΅Π½Ρ
ΠΈΠΌΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠ΅ΡΠ΅Ρ
ΠΎΠ΄Π° ΠΈ, ΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΠ½ΠΎ, ΠΊΠ»Π΅ΡΠΎΡΠ½ΡΠ΅ ΠΊΡΠ»ΡΡΡΡΡ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΈΠ· ΡΠΊΡΡΡΠ°ΡΠ΅Π»Π»ΡΠ»ΡΡΠ½ΡΡ
ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ΅ΠΉ, ΠΌΠΎΠ³ΡΡ ΠΈΠΌΠ΅ΡΡ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΡΠΉ ΡΠ΅Π½ΠΎΡΠΈΠΏ, ΠΎΡΠ»ΠΈΡΠ½ΡΠΉ ΠΎΡ ΠΏΠ΅ΡΠ²ΠΈΡΠ½ΠΎΠ³ΠΎ Π½ΠΎΠ²ΠΎΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ. Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β ΠΎΡΠ΅Π½ΠΊΠ° Β«ΡΠΎΡ
ΡΠ°Π½Π½ΠΎΡΡΠΈΒ» ΡΠΏΠΈΡΠ΅Π»ΠΈΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ΅Π½ΠΎΡΠΈΠΏΠ° ΠΊΠ»Π΅ΡΠΎΡΠ½ΡΡ
Π»ΠΈΠ½ΠΈΠΉ ΡΠ°ΠΊΠ° ΠΌΠΎΠ»ΠΎΡΠ½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ ΠΈ ΡΠΈΡΠ½ΠΈΠΊΠΎΠ².ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. Π ΡΠ°Π±ΠΎΡΠ΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ ΠΊΠ»Π΅ΡΠΎΡΠ½ΡΠ΅ Π»ΠΈΠ½ΠΈΠΈ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΈΠ· ΠΏΠ»Π΅Π²ΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠΈ (MCF-7, T-47D), ΠΌΠΎΠ»ΠΎΠ·ΠΈΠ²Π° (HBL-100), ΡΓ³Π»ΠΈΠ΄Π½ΠΎΠ³ΠΎ ΠΎΠΏΡΡ
ΠΎΠ»Π΅Π²ΠΎΠ³ΠΎ ΡΠ·Π»Π° (BT-474, HCC1937) Π±ΠΎΠ»ΡΠ½ΡΡ
ΡΠ°ΠΊΠΎΠΌ ΠΌΠΎΠ»ΠΎΡΠ½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ ΠΈ Π°ΡΡΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠΈ (SCOV-3) Π±ΠΎΠ»ΡΠ½ΠΎΠΉ ΡΠ°ΠΊΠΎΠΌ ΡΠΈΡΠ½ΠΈΠΊΠΎΠ². ΠΠΊΡΠΏΡΠ΅ΡΡΠΈΡ ΡΠΈΡΠΎΠΊΠ΅ΡΠ°ΡΠΈΠ½ΠΎΠ² ΠΈ Π²ΠΈΠΌΠ΅Π½ΡΠΈΠ½Π° ΠΎΡΠ΅Π½ΠΈΠ²Π°Π»ΠΈ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΈΠΌΠΌΡΠ½ΠΎΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ ΠΌΠ΅ΡΠΎΠ΄Π°, Π°ΡΡΠΎΡΠΈΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Ρ ΠΏΡΠΎΡΠΎΡΠ½ΠΎΠΉ ΡΠΈΡΠΎΡΠ»ΡΠΎΡΠΈΠΌΠ΅ΡΡΠΈΠ΅ΠΉ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΡΡΠΎΠΊΠΈΠΉ ΡΡΠΎΠ²Π΅Π½Ρ Π²ΠΈΠΌΠ΅Π½ΡΠΈΠ½Π° Π² ΠΊΠ»Π΅ΡΠΊΠ°Ρ
, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΠΈΠ· ΡΠΊΡΡΡΠ°ΡΠ΅Π»Π»ΡΠ»ΡΡΠ½ΡΡ
ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ΅ΠΉ, ΡΠΎΡ
ΡΠ°Π½ΡΠ»ΡΡ (Π»ΠΈΠ½ΠΈΡ HBL-100), ΡΠΌΠ΅ΡΠ΅Π½Π½ΠΎ ΡΠ½ΠΈΠΆΠ°Π»ΡΡ (ΠΊΠ»Π΅ΡΠΊΠΈ SCOV-3) ΠΈ Π΄Π°ΠΆΠ΅ ΡΡΡΠ°ΡΠΈΠ²Π°Π»ΡΡ (ΠΊΠ»Π΅ΡΠΊΠΈ MCF-7 ΠΈ T-47D). ΠΠ»Π΅ΡΠΊΠΈ Π»ΠΈΠ½ΠΈΠΈ HCC1937, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΈΠ· ΡΓ³Π»ΠΈΠ΄Π½ΠΎΠ³ΠΎ ΡΠ·Π»Π° Ρ ΠΎΠΆΠΈΠ΄Π°Π΅ΠΌΠΎ Π½ΠΈΠ·ΠΊΠΎΠΉ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠ΅ΠΉ Π²ΠΈΠΌΠ΅Π½ΡΠΈΠ½Π°, ΠΏΡΠΈ ΡΠΎΡΡΠ΅ Π² ΠΊΡΠ»ΡΡΡΡΠ΅ ΠΏΡΠΈΠΎΠ±ΡΠ΅Π»ΠΈ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΡΠΉ ΡΠ΅Π½ΠΎΡΠΈΠΏ Ρ Π²ΡΡΠΎΠΊΠΈΠΌ ΡΡΠΎΠ²Π½Π΅ΠΌ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠΈ ΡΡΠΎΠ³ΠΎ ΠΌΠ΅Π·Π΅Π½Ρ
ΠΈΠΌΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΌΠ°ΡΠΊΠ΅ΡΠ°. Π ΠΊΠ»Π΅ΡΠΊΠ°Ρ
ΡΠ°ΠΊΠ° ΠΌΠΎΠ»ΠΎΡΠ½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ BT-474, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΠΈΠ· ΡΓ³Π»ΠΈΠ΄Π½ΠΎΠ³ΠΎ Π½ΠΎΠ²ΠΎΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ, ΠΏΠΎ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠΈ Π²ΠΈΠΌΠ΅Π½ΡΠΈΠ½Π° ΠΎΠ±Π½Π°ΡΡΠΆΠ΅Π½ΠΎ ΡΠΎΡ
ΡΠ°Π½Π΅Π½ΠΈΠ΅ ΡΠΏΠΈΡΠ΅Π»ΠΈΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ΅Π½ΠΎΡΠΈΠΏΠ° ΠΏΡΠΈ ΡΠΎΡΡΠ΅ in vitro.ΠΠ°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅. ΠΡΠ΅Π½ΠΊΠ° ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠΈ de novo ΠΌΠ΅Π·Π΅Π½Ρ
ΠΈΠΌΠ°Π»ΡΠ½ΠΎΠ³ΠΎ Π±Π΅Π»ΠΊΠ° Π²ΠΈΠΌΠ΅Π½ΡΠΈΠ½Π° ΠΏΠΎΠΊΠ°Π·Π°Π»Π°, ΡΡΠΎ ΡΠ΅Π½ΠΎΡΠΈΠΏ ΠΎΠΏΡΡ
ΠΎΠ»ΠΈ Π² ΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠ΅ Π½Π΅ Π²ΡΠ΅Π³Π΄Π° ΡΠ΅Π°Π»ΠΈΠ·ΡΠ΅ΡΡΡ Π² ΠΊΠ»Π΅ΡΠΊΠ°Ρ
, Π°Π΄Π°ΠΏΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΊ ΡΠΎΡΡΡ Π² ΠΊΡΠ»ΡΡΡΡΠ΅, ΠΈ Π½Π΅ Π²ΡΠ΅Π³Π΄Π° ΡΠ²Π»ΡΠ΅ΡΡΡ Β«ΡΡΡΠΎΠ³ΠΎΒ» ΡΠΏΠΈΡΠ΅Π»ΠΈΠ°Π»ΡΠ½ΡΠΌ, ΡΡΠΎ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎ ΡΡΠΈΡΡΠ²Π°ΡΡ ΠΏΡΠΈ ΡΠ°Π·Π½ΠΎΠ³ΠΎ ΡΠΎΠ΄Π° ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΡ
ΡΠΏΠΈΡΠ΅Π»ΠΈΠ°Π»ΡΠ½ΡΡ
ΠΊΠ»Π΅ΡΠΎΠΊ in vitro
VIMENTIN EXPRESSION IN HUMAN CELL LINES OF EPITHELIAL TUMORS
Background. Cell cultures used as a models in studies of epithelial tumors, are obtained not only from solid tumors, but also from extracellular fluids. It is known that dissemination of ovarian cancer in the peritoneum and further growth of tumor cells in ascetic liquid is accompanied with the activation of epithelial-mesenchymal transition, and, therefore, cell cultures derived from extracellular fluids can have a distinct molecular phenotype from primary tumors.Objective: evaluation the βpersistenceβ of epithelial phenotype in breast and ovarian cancer cell cultures.Materials and methods. The cells obtained from pleural fluid (MCF-7, T-47D), colostrum (HBL-100), solid tumors (BT-474, HCC1937) of patients with breast cancer and ascitic fluid (SCOV- 3) of patients with ovarian cancer. The expression of cytokeratins and vimentin was evaluated using a quantitative immunofluorescence method associated with flow cytometry.Results. Vimentin expression in cells derived from extracellular fluids was not changed (line HBL-100), slightly decreased (SCOV-3 cells), or even was lost (MCF-7 and T-47D cells). HCC1937 cells obtained from solid tumor with expected low expression of vimentin acquired a molecular phenotype with a high expression of this mesenchymal marker. In breast cancer cells BT-474 derived from solid tumor a βpersistenceβ of epithelial phenotype was discovered.Conclusion. Quantitative assessment of the de novo expression of mesenchymal protein vimentin showed that the tumor phenotype within the organizm is not always realized in cells adapted to growth in culture, and is not always Β«strictlyΒ» epithelial, and this evidence must be considered with different kinds of molecular studies of epithelial cells in vitro