Výsledky vyhledávání - "Maria Imschenetzky"

Akademický článek

The protease degrading sperm histones post-fertilization in sea urchin eggs is a nuclear cathepsin L that is further required for embryo development.

Autor: Violeta Morin, Andrea Sanchez-Rubio, Antoine Aze, Claudio Iribarren, Claire Fayet, Yves Desdevises, Jenaro Garcia-Huidobro, Maria Imschenetzky, Marcia Puchi, Anne-Marie Genevière

Publikováno v: PLoS ONE, Vol 7, Iss 11, p e46850 (2012)

Proteolysis of sperm histones in the sea urchin male pronucleus is the consequence of the activation at fertilization of a maternal cysteine protease. We previously showed that this protein is required for male chromatin remodelling and for cell-cycl

Externí odkaz: https://doaj.org/article/260c1f1456b54cd79ca37c6ec53ce44c

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A new nuclear protease with cathepsin L properties is present in HeLa and Caco-2 cells

Autor: Violeta Morin, Candy Cordova, Estefanie Dufey, Paula Bustos, Jenaro Garcia-Huidobro, Rodrigo Aguilar, Maria Imschenetzky, Marcia Puchi

Publikováno v: JOURNAL OF CELLULAR BIOCHEMISTRY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

Recently many authors have reported that cathepsin L can be found in the nucleus of mammalian cells with important functions in cell-cycle progression. In previous research, we have demonstrated that a cysteine protease (SpH-protease) participates in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d795cc87856131e3c096a7fa8b23cf3
https://doi.org/10.1002/jcb.22712

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Cathepsin L inhibitor I blocks mitotic chromosomes decondensation during cleavage cell cycles of sea urchin embryos

Autor: Anne Marie Genevière, Jenaro Garcia Huidobro, Violeta Morin, Paula Bustos, Andrea Sanchez, Claudio Iribarren, Karin Quiñones, Maria Imschenetzky, Marcia Puchi

Publikováno v: JOURNAL OF CELLULAR PHYSIOLOGY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

We have previously reported that sperm histones (SpH) degradation after fertilization is catalyzed by a cystein-protease (SpH-protease). Its inhibition blocks the degradation of SpH in vivo and also aborts sea urchin development at the initial embryo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a04d99beb91e08584e20d3719144eaaf
https://doi.org/10.1002/jcp.21459

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During male pronuclei formation chromatin remodeling is uncoupled from nucleus decondensation

Autor: Claudio Iribarren, Maria Imschenetzky, Marcia Puchi, Paula Bustos, Violeta Morin, Antonia Monardes

Publikováno v: JOURNAL OF CELLULAR BIOCHEMISTRY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

Male pronucleus formation involves sperm nucleus decondensation and sperm chromatin remodeling. In sea urchins, male pronucleus decondensation was shown to be modulated by protein kinase C and a cdc2-like kinase sensitive to olomoucine in vitro assay

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3dc83e52f7630a7af19d15a84addd05
https://doi.org/10.1002/jcb.20583

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Inhibition of cysteine protease activity disturbs DNA replication and prevents mitosis in the early mitotic cell cycles of sea urchin embryos

Autor: Antonia Monardes, Violeta Morin, Anne Marie Genevière, Maria Imschenetzky, Marcia Puchi, Carolina Concha, Yasmine Even

Publikováno v: JOURNAL OF CELLULAR PHYSIOLOGY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

Recent findings suggested that the role of cysteine proteases would not be limited to protein degradation in lysosomes but would also play regulatory functions in more specific cell mechanisms. We analyzed here the role of these enzymes in the contro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5563da06a35c39e78f61cc934bf9cec
https://doi.org/10.1002/jcp.20338

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Cysteine-protease involved in male chromatin remodeling after fertilization co-localizes with α-tubulin at mitosis

Autor: Violeta Morin, Carolina Concha, Paula Bustos, Margarete M. S. Heck, Anne Marie Genevière, Maria Imschenetzky, Marcia Puchi

Publikováno v: Journal of Cellular Physiology. 202:602-607

We postulated an essential role for a cysteine-protease in sea urchins sperm histones degradation which follows fertilization. We now report the purification of this enzyme, the determination of its N-terminal amino acid sequence and the localization

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a61ef4bd83c6f612eeefbd6488a70eed
https://doi.org/10.1002/jcp.20157

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Chromatin remodeling during sea urchin early development: molecular determinants for pronuclei formation and transcriptional activation

Autor: Violeta Morin, Maria Imschenetzky, Marcia Puchi, Ricardo Medina, Martin Montecino

Publikováno v: Gene. 322:33-46

Transcriptional activation of specific genes is initiated after fertilization by the interaction of specific transcription factors with its cognate sequences in the chromatin context, thereby leading to a concerted and coordinated program which deter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5e170b6b174636dfeff82d160fe3663
https://doi.org/10.1016/j.gene.2003.08.024

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Conservative segregation of maternally inherited CS histone variants in larval stages of sea urchin development

Autor: Violeta Morin, María Isabel Oliver, Soraya E. Gutierrez, Anne Marie Genevière, Maria Imschenetzky, Carla Rodríguez, Marcia Puchi, Martin Montecino, Paula Bustos

Publikováno v: Journal of Cellular Biochemistry. 88:643-649

Three sets of histone variants are coexisting in the embryo at larval stages of sea urchin's development: the maternally inherited cleavage stage variants (CS) expressed during the two initial cleavage divisions, the early histone variants, which are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::96cfb89e658c4adb9fc1c7c15d05ec9e
https://doi.org/10.1002/jcb.10416

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Interaction of the 1α,25-dihydroxyvitamin D3 receptor at the distal promoter region of the bone-specific osteocalcin gene requires nucleosomal remodelling

Autor: Roberto PAREDES, José GUTIÉRREZ, Soraya GUTIERREZ, Lizabeth ALLISON, Marcia PUCHI, Maria IMSCHENETZKY, Andre van WIJNEN, Jane LIAN, Gary STEIN, Janet STEIN, Martin MONTECINO

Publikováno v: Biochemical Journal. 363:667-676

1α,25-Dihydroxyvitamin D3-mediated transcriptional control of the bone-specific osteocalcin (OC) gene requires the integration of regulatory signals at the vitamin D-responsive element (VDRE) and flanking tissue-specific sequences. The 1α,25-dihydr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::92d285a25468e4f083eb5f3564e808d9
https://doi.org/10.1042/bj3630667

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Reduced CpG methylation is associated with transcriptional activation of the bone-specific rat osteocalcin gene in osteoblasts*

Autor: Gary S. Stein, José Sierra, Martin Montecino, Roberto Paredes, Alejandro Villagra, Andre J. Van Wijnen, Maria Imschenetzky, Marcia Puchi, Jane B. Lian, José L. Gutiérrez, Janet L. Stein

Publikováno v: Journal of Cellular Biochemistry. 85:112-122

Chromatin remodeling of the bone-specific rat osteocalcin (OC) gene accompanies the onset and increase in OC expression during osteoblast differentiation. In osseous cells expressing OC, the promoter region contains two nuclease hypersensitive sites

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4e454ebbeae697c135581936c68101e6
https://doi.org/10.1002/jcb.10113

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