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Investigation the effects of vitreous humor on proliferation and dedifferentiation of differentiated NTERA2 cells / Investigar os efeitos do humor vítreo na proliferação e desdiferenciação de células NTERA2 diferenciadas
Rezaeian, Z; Bahrami, A R; Matin, M M; Hosseiny, S S.
  • Rezaeian, Z; Ferdowsi University of Mashhad. Institute of Biotechnology. Cellular and Molecular Biotechnology Research Group. Mashhad. IR
  • Bahrami, A R; Ferdowsi University of Mashhad. Institute of Biotechnology. Cellular and Molecular Biotechnology Research Group. Mashhad. IR
  • Matin, M M; Ferdowsi University of Mashhad. Institute of Biotechnology. Cellular and Molecular Biotechnology Research Group. Mashhad. IR
  • Hosseiny, S S; Ferdowsi University of Mashhad. Institute of Biotechnology. Cellular and Molecular Biotechnology Research Group. Mashhad. IR
Braz. j. biol ; 84: e250151, 2024. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1350306
ABSTRACT
Abstract Mammals have a limited capacity to regenerate their tissues and organs. One of the mechanisms associated with natural regeneration is dedifferentiation. Several small molecules such as vitamin C and growth factors could improve reprogramming efficiency. In this study, the NTERA2-D1 (NT2) cells were induced towards differentiation (NT2-RA) with 10-5 M retinoic acid (RA) for three days and then subjected to various amounts of vitreous humor (VH). Results show that the growth rate of these cells was reduced, while this rate was partly restored upon treatment with VH (NT2-RA-VH). Cell cycle analysis with PI method also showed that the numbers of cells at the S phase of the cell cycle in these cells were increased. The levels of SSEA3 and TRA-1-81 antigens in NT2-RA were dropped but they increased in NT2- RA-VH to a level similar to the NT2 cells. The level of SSEA1 had an opposite pattern. Expression of OCT4 gene dropped after RA treatment, but it was recovered in NT2-RA-VH cells. In conclusion, we suggest VH as a potent mixture for improving the cellular reprogramming leading to dedifferentiation.
RESUMO
Resumo Os mamíferos têm uma capacidade limitada de regenerar seus tecidos e órgãos. Um dos mecanismos associados à regeneração natural é a desdiferenciação. Várias moléculas pequenas, como vitamina C e fatores de crescimento, podem melhorar a eficiência da reprogramação. Neste estudo, as células NTERA2-D1 (NT2) foram induzidas à diferenciação (NT2-RA) com ácido retinóico (RA) 10-5 M por três dias e depois submetidas a várias quantidades de humor vítreo (VH). Os resultados mostram que a taxa de crescimento dessas células foi reduzida, enquanto essa taxa foi parcialmente restaurada após o tratamento com VH (NT2-RA-VH). A análise do ciclo celular com o método PI também mostrou que o número de células na fase S do ciclo celular nessas células estava aumentado. Os níveis de antígenos SSEA3 e TRA-1-81 em NT2-RA diminuíram, mas aumentaram em NT2-RA-VH a um nível semelhante ao das células NT2. O nível de SSEA1 teve um padrão oposto. A expressão do gene OCT4 diminuiu após o tratamento com AR, mas foi recuperado em células NT2-RA-VH. Em conclusão, sugerimos o VH como uma mistura potente para melhorar a reprogramação celular levando à desdiferenciação.

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Full text: Available Index: LILACS (Americas) Main subject: Vitreous Body / Cell Proliferation / Cell Dedifferentiation Limits: Humans Language: English Journal: Braz. j. biol Year: 2024 Type: Article Institution/Affiliation country: Ferdowsi University of Mashhad/IR

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Full text: Available Index: LILACS (Americas) Main subject: Vitreous Body / Cell Proliferation / Cell Dedifferentiation Limits: Humans Language: English Journal: Braz. j. biol Year: 2024 Type: Article Institution/Affiliation country: Ferdowsi University of Mashhad/IR