CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in culture
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/4716 https://doi.org/10.1016/j.pathophys.2006.09.003 |
Resumo: | Dipeptidyl peptidase IV, a cell membrane surface protease also known as CD26 (CD26/DPPIV), is known to play multiple functions in human organism, where it is largely expressed, for instance, in the development of human cancer and metastasis as well as in chemotherapy response. The objective of this work was to study the CD26 membrane expression and DPPIV activity in T-acute leukaemia cell lines (CEM and MOLT3) in culture, in order to observe the modification of its expression under the 8-azaguanine treatment. Cell line samples were incubated, some without different azaguanine concentration and others with, ranging from 10 to 100µM. Cell surface CD26 expression has been identified by flow cytometry and DPPIV activity, in cultured medium, was fluorimetrically measured. Results we have observed showed that 8-azaguanine induced a decrease in cell viability in a dose, time and cell type dependent manner with MOLT3 cells being the most sensitive to 8-azaguanine citotoxic effects (24 h IC50: ±10µM) when compared with CEM cells (24 h IC50: ±100µM). In the same experimental conditions, MOLT3 cell treated with 8-azaguanine shows an increase in CD26 expression (MIF) compared with that of CEM cell submitted to the same conditions (65.4±1.3 versus 18.7±1.7). DPPIV activity in culture medium supernatant of CEM versus MOLT3 controls cells (1.91±0.43 versus 2.06±0.50) and of CEM versus MOLT3 treated cells (2.10±0.16 versus 1.89±0.04) did not show a significant difference. These preliminary results suggest that 8-azaguanine stimulates CD26 expression which may be related to cellular sensitivity to 8-azaguanine. |
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CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in cultureCD26/DPPIVChemotherapy responseDipeptidyl peptidase IV, a cell membrane surface protease also known as CD26 (CD26/DPPIV), is known to play multiple functions in human organism, where it is largely expressed, for instance, in the development of human cancer and metastasis as well as in chemotherapy response. The objective of this work was to study the CD26 membrane expression and DPPIV activity in T-acute leukaemia cell lines (CEM and MOLT3) in culture, in order to observe the modification of its expression under the 8-azaguanine treatment. Cell line samples were incubated, some without different azaguanine concentration and others with, ranging from 10 to 100µM. Cell surface CD26 expression has been identified by flow cytometry and DPPIV activity, in cultured medium, was fluorimetrically measured. Results we have observed showed that 8-azaguanine induced a decrease in cell viability in a dose, time and cell type dependent manner with MOLT3 cells being the most sensitive to 8-azaguanine citotoxic effects (24 h IC50: ±10µM) when compared with CEM cells (24 h IC50: ±100µM). In the same experimental conditions, MOLT3 cell treated with 8-azaguanine shows an increase in CD26 expression (MIF) compared with that of CEM cell submitted to the same conditions (65.4±1.3 versus 18.7±1.7). DPPIV activity in culture medium supernatant of CEM versus MOLT3 controls cells (1.91±0.43 versus 2.06±0.50) and of CEM versus MOLT3 treated cells (2.10±0.16 versus 1.89±0.04) did not show a significant difference. These preliminary results suggest that 8-azaguanine stimulates CD26 expression which may be related to cellular sensitivity to 8-azaguanine.http://www.sciencedirect.com/science/article/B6TBB-4M57H33-1/1/0f52b91095cb3dd6eac759bb2b90d0602007info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4716http://hdl.handle.net/10316/4716https://doi.org/10.1016/j.pathophys.2006.09.003engPathophysiology. 14:1 (2007) 3-10http://www.sciencedirect.com/science/article/pii/S0928468006000824Dourado, MaríliaSarmento, Ana BelaPereira, Sofia ValeAlves, VeraSilva, TeresaPinto, Anabela Motainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-07-08T10:42:36Zoai:estudogeral.uc.pt:10316/4716Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:43:26.761958Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in culture |
title |
CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in culture |
spellingShingle |
CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in culture Dourado, Marília CD26/DPPIV Chemotherapy response |
title_short |
CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in culture |
title_full |
CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in culture |
title_fullStr |
CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in culture |
title_full_unstemmed |
CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in culture |
title_sort |
CD26/DPPIV expression and 8-azaguanine response in T-acute lymphoblastic leukaemia cell lines in culture |
author |
Dourado, Marília |
author_facet |
Dourado, Marília Sarmento, Ana Bela Pereira, Sofia Vale Alves, Vera Silva, Teresa Pinto, Anabela Mota |
author_role |
author |
author2 |
Sarmento, Ana Bela Pereira, Sofia Vale Alves, Vera Silva, Teresa Pinto, Anabela Mota |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Dourado, Marília Sarmento, Ana Bela Pereira, Sofia Vale Alves, Vera Silva, Teresa Pinto, Anabela Mota |
dc.subject.por.fl_str_mv |
CD26/DPPIV Chemotherapy response |
topic |
CD26/DPPIV Chemotherapy response |
description |
Dipeptidyl peptidase IV, a cell membrane surface protease also known as CD26 (CD26/DPPIV), is known to play multiple functions in human organism, where it is largely expressed, for instance, in the development of human cancer and metastasis as well as in chemotherapy response. The objective of this work was to study the CD26 membrane expression and DPPIV activity in T-acute leukaemia cell lines (CEM and MOLT3) in culture, in order to observe the modification of its expression under the 8-azaguanine treatment. Cell line samples were incubated, some without different azaguanine concentration and others with, ranging from 10 to 100µM. Cell surface CD26 expression has been identified by flow cytometry and DPPIV activity, in cultured medium, was fluorimetrically measured. Results we have observed showed that 8-azaguanine induced a decrease in cell viability in a dose, time and cell type dependent manner with MOLT3 cells being the most sensitive to 8-azaguanine citotoxic effects (24 h IC50: ±10µM) when compared with CEM cells (24 h IC50: ±100µM). In the same experimental conditions, MOLT3 cell treated with 8-azaguanine shows an increase in CD26 expression (MIF) compared with that of CEM cell submitted to the same conditions (65.4±1.3 versus 18.7±1.7). DPPIV activity in culture medium supernatant of CEM versus MOLT3 controls cells (1.91±0.43 versus 2.06±0.50) and of CEM versus MOLT3 treated cells (2.10±0.16 versus 1.89±0.04) did not show a significant difference. These preliminary results suggest that 8-azaguanine stimulates CD26 expression which may be related to cellular sensitivity to 8-azaguanine. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/4716 http://hdl.handle.net/10316/4716 https://doi.org/10.1016/j.pathophys.2006.09.003 |
url |
http://hdl.handle.net/10316/4716 https://doi.org/10.1016/j.pathophys.2006.09.003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Pathophysiology. 14:1 (2007) 3-10 http://www.sciencedirect.com/science/article/pii/S0928468006000824 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
dc.source.none.fl_str_mv |
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instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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