Artículo

Schanton, M.; Maymó, J.; Pérez-Pérez, A.; Gambino, Y.; Maskin, B.; Dueñas, J.L.; Sánchez-Margalet, V.; Varone, C. "Sp1 transcription factor is a modulator of estradiol leptin induction in placental cells" (2017) Placenta. 57:152-162
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Abstract:

Introduction Pleiotropic effects of leptin have been identified in reproduction and pregnancy, particularly in the placenta, where it functions as an autocrine hormone. The synthesis of leptin in normal trophoblastic cells is regulated by different endogenous biochemical agents, but the regulation of placental leptin expression is still poorly understood. We have previously reported that 17β-estradiol up-regulates placental leptin expression through genomic and nongenomic mechanisms. Methods To improve the understanding of estrogen receptor mechanisms in regulating leptin gene expression, we examined Sp1 transcription factor effect on estradiol leptin induction in human BeWo cell line. Results We demonstrated that Sp1 induces leptin expression determined by qRT-PCR, Western blot and transient transfection experiments. We also found that estradiol induction effect on leptin expression is enhanced by the over expression of Sp1 factor. Moreover, estradiol effect was not evidenced when Sp1 binding site on leptin promoter is mutated, suggesting that estradiol action is dependent on Sp1. On the other hand we showed data that demonstrate that Sp1 induction of leptin expression is insensitive to the antiestrogen ICI 182 780. By over expression experiments, we have also found that Sp1 effect on leptin expression could be mediated by estrogen receptor alpha. Supporting this idea, the downregulation of estrogen receptor alpha level through a specific siRNA, abolished Sp1 effect on leptin expression. Discussion Taken together all these evidences suggest a cooperative behavior between estrogen receptor alpha and Sp1 transcription factors to induce leptin transcription. © 2017 Elsevier Ltd

Registro:

Documento: Artículo
Título:Sp1 transcription factor is a modulator of estradiol leptin induction in placental cells
Autor:Schanton, M.; Maymó, J.; Pérez-Pérez, A.; Gambino, Y.; Maskin, B.; Dueñas, J.L.; Sánchez-Margalet, V.; Varone, C.
Filiación:Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Ciudad Universitaria Pabellón 2, 4° piso, Buenos Aires, 1428, Argentina
Universidad de Buenos Aires, CONICET, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Ciudad Universitaria Pabellón 2, 4° piso, Buenos Aires, 1428, Argentina
Departamento de Bioquímica Médica y Biología Molecular, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Avenida Sánchez Pizjúan 4, Sevilla, 41009, Spain
Hospital Nacional Profesor Alejandro Posadas, Buenos Aires, Argentina
Palabras clave:Estradiol; Leptin expression; Placenta; Sp1 transcription factor; estradiol; estrogen receptor alpha; fulvestrant; leptin; small interfering RNA; transcription factor Sp1; estradiol; estrogen receptor alpha; leptin; transcription factor Sp1; Article; BeWo cell line; choriocarcinoma cell line; controlled study; down regulation; gene expression; human; human cell; placenta; priority journal; quantitative analysis; reverse transcription polymerase chain reaction; transient transfection; Western blotting; analogs and derivatives; female; metabolism; physiology; placenta; pregnancy; tumor cell line; Cell Line, Tumor; Estradiol; Estrogen Receptor alpha; Female; Humans; Leptin; Placenta; Pregnancy; Sp1 Transcription Factor
Año:2017
Volumen:57
Página de inicio:152
Página de fin:162
DOI: http://dx.doi.org/10.1016/j.placenta.2017.07.005
Título revista:Placenta
Título revista abreviado:Placenta
ISSN:01434004
CODEN:PLACD
CAS:estradiol, 50-28-2; fulvestrant, 129453-61-8; Estradiol; Estrogen Receptor alpha; fulvestrant; Leptin; Sp1 Transcription Factor
Registro:http://digital.bl.fcen.uba.ar/collection/paper/document/paper_01434004_v57_n_p152_Schanton

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Citas:

---------- APA ----------
Schanton, M., Maymó, J., Pérez-Pérez, A., Gambino, Y., Maskin, B., Dueñas, J.L., Sánchez-Margalet, V.,..., Varone, C. (2017) . Sp1 transcription factor is a modulator of estradiol leptin induction in placental cells. Placenta, 57, 152-162.
http://dx.doi.org/10.1016/j.placenta.2017.07.005
---------- CHICAGO ----------
Schanton, M., Maymó, J., Pérez-Pérez, A., Gambino, Y., Maskin, B., Dueñas, J.L., et al. "Sp1 transcription factor is a modulator of estradiol leptin induction in placental cells" . Placenta 57 (2017) : 152-162.
http://dx.doi.org/10.1016/j.placenta.2017.07.005
---------- MLA ----------
Schanton, M., Maymó, J., Pérez-Pérez, A., Gambino, Y., Maskin, B., Dueñas, J.L., et al. "Sp1 transcription factor is a modulator of estradiol leptin induction in placental cells" . Placenta, vol. 57, 2017, pp. 152-162.
http://dx.doi.org/10.1016/j.placenta.2017.07.005
---------- VANCOUVER ----------
Schanton, M., Maymó, J., Pérez-Pérez, A., Gambino, Y., Maskin, B., Dueñas, J.L., et al. Sp1 transcription factor is a modulator of estradiol leptin induction in placental cells. Placenta. 2017;57:152-162.
http://dx.doi.org/10.1016/j.placenta.2017.07.005