l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell lines
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista brasileira de hematologia e hemoterapia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-84842016000200128 |
Resumo: | ABSTRACT BACKGROUND: Myeloproliferative neoplasms are Philadelphia chromosome-negative diseases characterized by hyperproliferation of mature myeloid cells, associated or not with the Janus kinase 2 tyrosine kinase mutation, JAK2V617F. As there is no curative therapy, researchers have been investigating new drugs to treat myeloproliferative neoplasms, including l-amino acid oxidase from Calloselasma rhodostoma snake venom (CR-LAAO), which is a toxin capable of eliciting apoptosis in several tumor cell lines. OBJECTIVE: To evaluate the effects of l-amino acid oxidase from C. rhodostoma snake venom in the apoptotic machinery of JAK2-mutated cell lines. METHODS: The HEL 92.1.7 and SET-2 cell lines were cultured with l-amino acid oxidase and catalase for 12 h at 37 °C in 5% carbon dioxide. The cell viability was assessed by the multi-table tournament method, the level of apoptosis was measured by flow cytometry, and the expression of cysteine-dependent aspartate-specific proteases and cleaved Poly(ADP-ribose) polymerase were analyzed by Western blotting. RESULTS: l-Amino acid oxidase from C. rhodostoma snake venom was cytotoxic to HEL 92.1.7 and SET-2 cells (50% inhibitory concentration = 0.15 µg/mL and 1.5 µg/mL, respectively) and induced apoptosis in a concentration-dependent manner. Cell treatment with catalase mitigated the l-amino acid oxidase toxicity, indicating that hydrogen peroxide is a key component of its cytotoxic effect.The activated caspases 3 and 8 expression and cleaved PARP in HEL 92.1.7 and SET-2 cells confirmed the apoptosis activation by CR-LAAO. CONCLUSIONS: l-Amino acid oxidase from C. rhodostoma snake venom is a potential antineoplastic agent against HEL 92.1.7 and SET-2 JAK2V617F-positive cells as it activates the extrinsic apoptosis pathway. |
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l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell linesMyeloproliferative neoplasmsApoptosisl-Amino acid oxidaseCalloselasma rhodostomaJanus kinase 2 mutationABSTRACT BACKGROUND: Myeloproliferative neoplasms are Philadelphia chromosome-negative diseases characterized by hyperproliferation of mature myeloid cells, associated or not with the Janus kinase 2 tyrosine kinase mutation, JAK2V617F. As there is no curative therapy, researchers have been investigating new drugs to treat myeloproliferative neoplasms, including l-amino acid oxidase from Calloselasma rhodostoma snake venom (CR-LAAO), which is a toxin capable of eliciting apoptosis in several tumor cell lines. OBJECTIVE: To evaluate the effects of l-amino acid oxidase from C. rhodostoma snake venom in the apoptotic machinery of JAK2-mutated cell lines. METHODS: The HEL 92.1.7 and SET-2 cell lines were cultured with l-amino acid oxidase and catalase for 12 h at 37 °C in 5% carbon dioxide. The cell viability was assessed by the multi-table tournament method, the level of apoptosis was measured by flow cytometry, and the expression of cysteine-dependent aspartate-specific proteases and cleaved Poly(ADP-ribose) polymerase were analyzed by Western blotting. RESULTS: l-Amino acid oxidase from C. rhodostoma snake venom was cytotoxic to HEL 92.1.7 and SET-2 cells (50% inhibitory concentration = 0.15 µg/mL and 1.5 µg/mL, respectively) and induced apoptosis in a concentration-dependent manner. Cell treatment with catalase mitigated the l-amino acid oxidase toxicity, indicating that hydrogen peroxide is a key component of its cytotoxic effect.The activated caspases 3 and 8 expression and cleaved PARP in HEL 92.1.7 and SET-2 cells confirmed the apoptosis activation by CR-LAAO. CONCLUSIONS: l-Amino acid oxidase from C. rhodostoma snake venom is a potential antineoplastic agent against HEL 92.1.7 and SET-2 JAK2V617F-positive cells as it activates the extrinsic apoptosis pathway.Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular2016-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-84842016000200128Revista Brasileira de Hematologia e Hemoterapia v.38 n.2 2016reponame:Revista brasileira de hematologia e hemoterapia (Online)instname:Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular (ABHHTC)instacron:ABHHTC10.1016/j.bjhh.2016.03.004info:eu-repo/semantics/openAccessTavares,CristianeMaciel,ThaísBurin,SandraAmbrósio,LucianaGhisla,SandroSampaio,SuelyCastro,Fabíolaeng2016-06-29T00:00:00Zoai:scielo:S1516-84842016000200128Revistahttp://www.rbhh.org/pt/archivo/https://old.scielo.br/oai/scielo-oai.phpsbhh@terra.com.br||secretaria@rbhh.org1806-08701516-8484opendoar:2016-06-29T00:00Revista brasileira de hematologia e hemoterapia (Online) - Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular (ABHHTC)false |
dc.title.none.fl_str_mv |
l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell lines |
title |
l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell lines |
spellingShingle |
l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell lines Tavares,Cristiane Myeloproliferative neoplasms Apoptosis l-Amino acid oxidase Calloselasma rhodostoma Janus kinase 2 mutation |
title_short |
l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell lines |
title_full |
l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell lines |
title_fullStr |
l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell lines |
title_full_unstemmed |
l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell lines |
title_sort |
l-Amino acid oxidase isolated from Calloselasma rhodostoma snake venom induces cytotoxicity and apoptosis in JAK2V617F-positive cell lines |
author |
Tavares,Cristiane |
author_facet |
Tavares,Cristiane Maciel,Thaís Burin,Sandra Ambrósio,Luciana Ghisla,Sandro Sampaio,Suely Castro,Fabíola |
author_role |
author |
author2 |
Maciel,Thaís Burin,Sandra Ambrósio,Luciana Ghisla,Sandro Sampaio,Suely Castro,Fabíola |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Tavares,Cristiane Maciel,Thaís Burin,Sandra Ambrósio,Luciana Ghisla,Sandro Sampaio,Suely Castro,Fabíola |
dc.subject.por.fl_str_mv |
Myeloproliferative neoplasms Apoptosis l-Amino acid oxidase Calloselasma rhodostoma Janus kinase 2 mutation |
topic |
Myeloproliferative neoplasms Apoptosis l-Amino acid oxidase Calloselasma rhodostoma Janus kinase 2 mutation |
description |
ABSTRACT BACKGROUND: Myeloproliferative neoplasms are Philadelphia chromosome-negative diseases characterized by hyperproliferation of mature myeloid cells, associated or not with the Janus kinase 2 tyrosine kinase mutation, JAK2V617F. As there is no curative therapy, researchers have been investigating new drugs to treat myeloproliferative neoplasms, including l-amino acid oxidase from Calloselasma rhodostoma snake venom (CR-LAAO), which is a toxin capable of eliciting apoptosis in several tumor cell lines. OBJECTIVE: To evaluate the effects of l-amino acid oxidase from C. rhodostoma snake venom in the apoptotic machinery of JAK2-mutated cell lines. METHODS: The HEL 92.1.7 and SET-2 cell lines were cultured with l-amino acid oxidase and catalase for 12 h at 37 °C in 5% carbon dioxide. The cell viability was assessed by the multi-table tournament method, the level of apoptosis was measured by flow cytometry, and the expression of cysteine-dependent aspartate-specific proteases and cleaved Poly(ADP-ribose) polymerase were analyzed by Western blotting. RESULTS: l-Amino acid oxidase from C. rhodostoma snake venom was cytotoxic to HEL 92.1.7 and SET-2 cells (50% inhibitory concentration = 0.15 µg/mL and 1.5 µg/mL, respectively) and induced apoptosis in a concentration-dependent manner. Cell treatment with catalase mitigated the l-amino acid oxidase toxicity, indicating that hydrogen peroxide is a key component of its cytotoxic effect.The activated caspases 3 and 8 expression and cleaved PARP in HEL 92.1.7 and SET-2 cells confirmed the apoptosis activation by CR-LAAO. CONCLUSIONS: l-Amino acid oxidase from C. rhodostoma snake venom is a potential antineoplastic agent against HEL 92.1.7 and SET-2 JAK2V617F-positive cells as it activates the extrinsic apoptosis pathway. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-84842016000200128 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-84842016000200128 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1016/j.bjhh.2016.03.004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular |
publisher.none.fl_str_mv |
Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular |
dc.source.none.fl_str_mv |
Revista Brasileira de Hematologia e Hemoterapia v.38 n.2 2016 reponame:Revista brasileira de hematologia e hemoterapia (Online) instname:Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular (ABHHTC) instacron:ABHHTC |
instname_str |
Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular (ABHHTC) |
instacron_str |
ABHHTC |
institution |
ABHHTC |
reponame_str |
Revista brasileira de hematologia e hemoterapia (Online) |
collection |
Revista brasileira de hematologia e hemoterapia (Online) |
repository.name.fl_str_mv |
Revista brasileira de hematologia e hemoterapia (Online) - Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular (ABHHTC) |
repository.mail.fl_str_mv |
sbhh@terra.com.br||secretaria@rbhh.org |
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1754213112810045440 |