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Duran-Bedolla J, Téllez-Sosa J, Valdovinos-Torres H, Pavón N, Buelna-Chontal M, Tello-López AT, Argotte-Ramos R, Rodríguez MH, Rodríguez MC. Cellular stress associated with the differentiation of Plasmodium berghei ookinetes. Biochem Cell Biol 2016; 95:310-317. [PMID: 28177775 DOI: 10.1139/bcb-2016-0028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
For malaria transmission, Plasmodium parasites must develop in the mosquito vector. Oxidative stress in the insect midgut, triggered by environmental changes (e.g., pH and temperature), influences the cellular signaling involved in differentiation from gametocytes to mobile ookinetes for the purpose of parasite survival. Oxidative stress activates the homeostatic response to stress characterized by the phosphorylation eIF2α, the attenuation of protein synthesis, and the transcription of genes participating in the unfolded protein response and antioxidant processes, forming a part of an integrated stress response (ISR). We hypothesized that ISR operates during the differentiation of gametocytes to ookinetes to assure Plasmodium survival. Using in-vitro conditions resembling the mosquito midgut conditions, we cultured Plasmodium berghei gametocytes to ookinetes and evaluated the redox balance by detecting reactive oxygen species and superoxide dismutase activity. Additionally, we evaluated the phosphorylation of eIF2α, the attenuation of the global protein synthesis, and the gene expression of cellular stress markers (e.g., endoplasmic reticulum chaperones and antioxidant molecules, measured by reverse-transcription quantitative polymerase chain reaction), finding that these processes were all taking place, probably to improve survival during the differentiation of Plasmodium berghei ookinetes.
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Affiliation(s)
- Josefina Duran-Bedolla
- a Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Avenida Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - Juan Téllez-Sosa
- a Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Avenida Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - Humberto Valdovinos-Torres
- a Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Avenida Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - Natalia Pavón
- b Departamento de Farmacología and Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología, Ignacio Chávez, Juan Badiano # 1, Col. Sección XVI, C.P. 014080, Tlalpan, D.F., México
| | - Mabel Buelna-Chontal
- b Departamento de Farmacología and Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología, Ignacio Chávez, Juan Badiano # 1, Col. Sección XVI, C.P. 014080, Tlalpan, D.F., México
| | - Angel T Tello-López
- a Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Avenida Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - Rocio Argotte-Ramos
- a Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Avenida Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - Mario Henry Rodríguez
- a Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Avenida Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - María Carmen Rodríguez
- a Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Avenida Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
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