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    Π­ΠšΠ‘ΠŸΠ Π•Π‘Π‘Π˜Π― Π’Π˜ΠœΠ•ΠΠ’Π˜ΠΠ Π’ ΠšΠ£Π›Π¬Π’Π£Π ΠΠ₯ ΠšΠ›Π•Π’ΠžΠš Π­ΠŸΠ˜Π’Π•Π›Π˜ΠΠ›Π¬ΠΠ«Π₯ ОПУΠ₯ΠžΠ›Π•Π™ Π§Π•Π›ΠžΠ’Π•ΠšΠ

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    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 β€œpersistence” 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 β€œpersistence” 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.Π’Π²Π΅Π΄Π΅Π½ΠΈΠ΅. ΠšΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Π΅ ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€Ρ‹, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΡ‹Π΅ Π² качСствС ΠΌΠΎΠ΄Π΅Π»ΡŒΠ½Ρ‹Ρ… ΠΏΡ€ΠΈ исслСдовании ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅ΠΉ ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ происхоТдСния, ΠΏΠΎΠ»ΡƒΡ‡Π°ΡŽΡ‚ Π½Π΅ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ΠΈΠ· сóлидных Π½ΠΎΠ²ΠΎΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠΉ, Π½ΠΎ ΠΈ ΠΈΠ· ΡΠΊΡΡ‚Ρ€Π°Ρ†Π΅Π»Π»ΡŽΠ»ΡΡ€Π½Ρ‹Ρ… ТидкостСй. Π˜Π·Π²Π΅ΡΡ‚Π½ΠΎ, Ρ‡Ρ‚ΠΎ диссСминация Ρ€Π°ΠΊΠ° яичников ΠΏΠΎ Π±Ρ€ΡŽΡˆΠΈΠ½Π΅ ΠΈ дальнСйший рост ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Π² асцитичСской Тидкости ΡΠΎΠΏΡ€ΠΎΠ²ΠΎΠΆΠ΄Π°ΡŽΡ‚ΡΡ Π°ΠΊΡ‚ΠΈΠ²Π°Ρ†ΠΈΠ΅ΠΉ Π² Π½ΠΈΡ… ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎ-ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄Π° ΠΈ, ΡΠ»Π΅Π΄ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎ, ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Π΅ ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€Ρ‹, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ ΠΈΠ· ΡΠΊΡΡ‚Ρ€Π°Ρ†Π΅Π»Π»ΡŽΠ»ΡΡ€Π½Ρ‹Ρ… ТидкостСй, ΠΌΠΎΠ³ΡƒΡ‚ ΠΈΠΌΠ΅Ρ‚ΡŒ молСкулярный Ρ„Π΅Π½ΠΎΡ‚ΠΈΠΏ, ΠΎΡ‚Π»ΠΈΡ‡Π½Ρ‹ΠΉ ΠΎΡ‚ ΠΏΠ΅Ρ€Π²ΠΈΡ‡Π½ΠΎΠ³ΠΎ новообразования. ЦСль исслСдования – ΠΎΡ†Π΅Π½ΠΊΠ° «сохранности» ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ Ρ„Π΅Π½ΠΎΡ‚ΠΈΠΏΠ° ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Ρ… Π»ΠΈΠ½ΠΈΠΉ Ρ€Π°ΠΊΠ° ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹ ΠΈ яичников.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Π½Ρ‹ ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Π΅ Π»ΠΈΠ½ΠΈΠΈ, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ ΠΈΠ· ΠΏΠ»Π΅Π²Ρ€Π°Π»ΡŒΠ½ΠΎΠΉ Тидкости (MCF-7, T-47D), ΠΌΠΎΠ»ΠΎΠ·ΠΈΠ²Π° (HBL-100), сóлидного ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²ΠΎΠ³ΠΎ ΡƒΠ·Π»Π° (BT-474, HCC1937) Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… Ρ€Π°ΠΊΠΎΠΌ ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹ ΠΈ асцитичСской Тидкости (SCOV-3) больной Ρ€Π°ΠΊΠΎΠΌ яичников. Π­ΠΊΡΠΏΡ€Π΅ΡΡΠΈΡŽ Ρ†ΠΈΡ‚ΠΎΠΊΠ΅Ρ€Π°Ρ‚ΠΈΠ½ΠΎΠ² ΠΈ Π²ΠΈΠΌΠ΅Π½Ρ‚ΠΈΠ½Π° ΠΎΡ†Π΅Π½ΠΈΠ²Π°Π»ΠΈ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ количСствСнного иммунофлуорСсцСнтного ΠΌΠ΅Ρ‚ΠΎΠ΄Π°, ассоциированного с ΠΏΡ€ΠΎΡ‚ΠΎΡ‡Π½ΠΎΠΉ Ρ†ΠΈΡ‚ΠΎΡ„Π»ΡƒΠΎΡ€ΠΈΠΌΠ΅Ρ‚Ρ€ΠΈΠ΅ΠΉ.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Высокий ΡƒΡ€ΠΎΠ²Π΅Π½ΡŒ Π²ΠΈΠΌΠ΅Π½Ρ‚ΠΈΠ½Π° Π² ΠΊΠ»Π΅Ρ‚ΠΊΠ°Ρ…, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… ΠΈΠ· ΡΠΊΡΡ‚Ρ€Π°Ρ†Π΅Π»Π»ΡŽΠ»ΡΡ€Π½Ρ‹Ρ… ТидкостСй, сохранялся (линия HBL-100), ΡƒΠΌΠ΅Ρ€Π΅Π½Π½ΠΎ сниТался (ΠΊΠ»Π΅Ρ‚ΠΊΠΈ SCOV-3) ΠΈ Π΄Π°ΠΆΠ΅ утрачивался (ΠΊΠ»Π΅Ρ‚ΠΊΠΈ MCF-7 ΠΈ T-47D). ΠšΠ»Π΅Ρ‚ΠΊΠΈ Π»ΠΈΠ½ΠΈΠΈ HCC1937, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ ΠΈΠ· сóлидного ΡƒΠ·Π»Π° с ΠΎΠΆΠΈΠ΄Π°Π΅ΠΌΠΎ Π½ΠΈΠ·ΠΊΠΎΠΉ экспрСссиСй Π²ΠΈΠΌΠ΅Π½Ρ‚ΠΈΠ½Π°, ΠΏΡ€ΠΈ ростС Π² ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€Π΅ ΠΏΡ€ΠΈΠΎΠ±Ρ€Π΅Π»ΠΈ молСкулярный Ρ„Π΅Π½ΠΎΡ‚ΠΈΠΏ с высоким ΡƒΡ€ΠΎΠ²Π½Π΅ΠΌ экспрСссии этого ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΌΠ°Ρ€ΠΊΠ΅Ρ€Π°. Π’ ΠΊΠ»Π΅Ρ‚ΠΊΠ°Ρ… Ρ€Π°ΠΊΠ° ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹ BT-474, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… ΠΈΠ· сóлидного новообразования, ΠΏΠΎ ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»ΡŽ экспрСссии Π²ΠΈΠΌΠ΅Π½Ρ‚ΠΈΠ½Π° ΠΎΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½ΠΎ сохранСниС ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ Ρ„Π΅Π½ΠΎΡ‚ΠΈΠΏΠ° ΠΏΡ€ΠΈ ростС in vitro.Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. ΠžΡ†Π΅Π½ΠΊΠ° ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² экспрСссии de novo ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π±Π΅Π»ΠΊΠ° Π²ΠΈΠΌΠ΅Π½Ρ‚ΠΈΠ½Π° ΠΏΠΎΠΊΠ°Π·Π°Π»Π°, Ρ‡Ρ‚ΠΎ Ρ„Π΅Π½ΠΎΡ‚ΠΈΠΏ ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ Π² ΠΎΡ€Π³Π°Π½ΠΈΠ·ΠΌΠ΅ Π½Π΅ всСгда рСализуСтся Π² ΠΊΠ»Π΅Ρ‚ΠΊΠ°Ρ…, Π°Π΄Π°ΠΏΡ‚ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Ρ… ΠΊ росту Π² ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€Π΅, ΠΈ Π½Π΅ всСгда являСтся «строго» ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½Ρ‹ΠΌ, Ρ‡Ρ‚ΠΎ Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ ΡƒΡ‡ΠΈΡ‚Ρ‹Π²Π°Ρ‚ΡŒ ΠΏΡ€ΠΈ Ρ€Π°Π·Π½ΠΎΠ³ΠΎ Ρ€ΠΎΠ΄Π° молСкулярных исслСдованиях ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ in vitro

    VIMENTIN EXPRESSION IN HUMAN CELL LINES OF EPITHELIAL TUMORS

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    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 β€œpersistence” 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 β€œpersistence” 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
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