1
|
Coussot G, Le Postollec A, Faye C, Baqué M, Vandenabeele-Trambouze O, Incerti S, Vigier F, Chaput D, Cottin H, Przybyla B, Berger T, Dobrijevic M. Photochemistry on the Space Station-Antibody Resistance to Space Conditions after Exposure Outside the International Space Station. Astrobiology 2019; 19:1053-1062. [PMID: 30817173 DOI: 10.1089/ast.2018.1907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Antibody-based analytical instruments are under development to detect signatures of life on planetary bodies. Antibodies are molecular recognition reagents able to detect their target at sub-nanomolar concentrations, with high affinity and specificity. Studying antibody binding performances under space conditions is mandatory to convince space agencies of the adequacy of this promising tool for planetary exploration. To complement previous ground-based experiments on antibody resistance to simulated irradiation, we evaluate in this paper the effects of antibody exposure to real space conditions during the EXPOSE-R2 mission outside the International Space Station. The absorbed dose of ionizing radiation recorded during the 588 days of this mission (220 mGy) corresponded to the absorbed dose expected during a mission to Mars. Moreover, samples faced, at the same time as irradiation, thermal cycles, launch constraints, and long-term storage. A model biochip was used in this study with antibodies in freeze-dried form and under two formats: free or covalently grafted to a solid surface. We found that antibody-binding performances were not significantly affected by cosmic radiation, and more than 40% of the exposed antibody, independent of its format, was still functional during all this experiment. We conclude that antibody-based instruments are well suited for in situ analysis on planetary bodies.
Collapse
Affiliation(s)
- Gaëlle Coussot
- 1Institut des Biomolécules Max Mousseron (IBMM), Université de Montpellier, CNRS, ENSCM, Montpellier, France
| | - Aurélie Le Postollec
- 2Laboratoire d'Astrophysique de Bordeaux (LAB), Université de Bordeaux, CNRS, Pessac, France
| | | | - Mickaël Baqué
- 4German Aerospace Center (DLR), Institute of Planetary Research, Management and Infrastructure, Research Group Astrobiological Laboratories, Berlin, Germany
| | - Odile Vandenabeele-Trambouze
- 5Université de Bretagne Occidentale (UBO), IUEM-UMR 6197, Laboratoire de Microbiologie des Environnements Extrêmes (LMEE), Plouzané, France
| | - Sébastien Incerti
- 6Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), UMR 5797, Université de Bordeaux, Gradignan, France
| | | | - Didier Chaput
- 7Centre National d'Etudes Spatiales, DCT/ME/EM, Toulouse, France
| | - Hervé Cottin
- 8Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - Bartos Przybyla
- 9German Aerospace Center, Institute of Aerospace Medicine, Cologne, Germany
| | - Thomas Berger
- 9German Aerospace Center, Institute of Aerospace Medicine, Cologne, Germany
| | - Michel Dobrijevic
- 2Laboratoire d'Astrophysique de Bordeaux (LAB), Université de Bordeaux, CNRS, Pessac, France
| |
Collapse
|
2
|
Coussot G, Le Postollec A, Incerti S, Baqué M, Faye C, Vandenabeele-Trambouze O, Cottin H, Ravelet C, Peyrin E, Fiore E, Vigier F, Caron J, Chaput D, Przybyla B, Berger T, Dobrijevic M. Photochemistry on the Space Station-Aptamer Resistance to Space Conditions: Particles Exposure from Irradiation Facilities and Real Exposure Outside the International Space Station. Astrobiology 2019; 19:1063-1074. [PMID: 30817199 DOI: 10.1089/ast.2018.1896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Some microarray-based instruments that use bioaffinity receptors such as antibodies or aptamers are under development to detect signatures of past or present life on planetary bodies. Studying the resistance of such instruments against space constraints and cosmic rays in particular is a prerequisite. We used several ground-based facilities to study the resistance of aptamers to various types of particles (protons, electrons, neutrons, and carbon ions) at different energies and fluences. We also tested the resistance of aptamers during the EXPOSE-R2 mission outside the International Space Station (ISS). The accumulated dose measured after the 588 days of this mission (220 mGy) corresponds to the accumulated dose that can be expected during a mission to Mars. We found that the recognition ability of fluorescently labeled aptamers was not significantly affected during short-term exposure experiments taking into account only one type of radiation at a time. However, we demonstrated that the same fluorescent dye was significantly affected by temperature variations (-21°C to +58°C) and storage throughout the entirety of the ISS experiment (60% of signal loss). This induced a large variability of aptamer signal in our analysis. However, we found that >50% of aptamers were still functional after the whole EXPOSE-R2 mission. We conclude that aptamer-based instruments are well suited for in situ analysis on planetary bodies, but the detection step requires additional investigations.
Collapse
Affiliation(s)
- Gaëlle Coussot
- 1Institut des Biomolécules Max Mousseron (IBMM), Université de Montpellier, CNRS, ENSCM, Montpellier, France
| | - Aurélie Le Postollec
- 2Laboratoire d'Astrophysique de Bordeaux (LAB), Université de Bordeaux, CNRS, B18N, Pessac, France
| | - Sébastien Incerti
- 3Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), UMR 5797, Université de Bordeaux, Gradignan, France
| | - Mickaël Baqué
- 4German Aerospace Center (DLR), Institute of Planetary Research, Management and Infrastructure, Research Group Astrobiological Laboratories, Berlin, Germany
| | | | - Odile Vandenabeele-Trambouze
- 6IUEM-UMR 6197, Laboratoire de Microbiologie des Environnements Extrêmes (LMEE), Université de Bretagne Occidentale (UBO), Plouzané, France
| | - Hervé Cottin
- 7Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - Corinne Ravelet
- 8Département de Pharmacochimie Moléculaire, UMR 5063, Université Grenoble Alpes, CNRS, St. Martin d'Hères, France
| | - Eric Peyrin
- 8Département de Pharmacochimie Moléculaire, UMR 5063, Université Grenoble Alpes, CNRS, St. Martin d'Hères, France
| | - Emmanuelle Fiore
- 8Département de Pharmacochimie Moléculaire, UMR 5063, Université Grenoble Alpes, CNRS, St. Martin d'Hères, France
| | | | - Jérôme Caron
- 9Département de Radiothérapie, Institut Bergonié, Comprehensive Cancer Center, Bordeaux, France
| | - Didier Chaput
- 10DCT/ME/EM, Centre National d'Etudes Spatiales, Toulouse, France
| | - Bartos Przybyla
- 11German Aerospace Center, Institute of Aerospace Medicine, Cologne, Germany
| | - Thomas Berger
- 11German Aerospace Center, Institute of Aerospace Medicine, Cologne, Germany
| | - Michel Dobrijevic
- 2Laboratoire d'Astrophysique de Bordeaux (LAB), Université de Bordeaux, CNRS, B18N, Pessac, France
| |
Collapse
|
3
|
El Guerrab A, Zegrour R, Nemlin CC, Vigier F, Cayre A, Penault-Llorca F, Rossignol F, Bignon YJ. Differential impact of EGFR-targeted therapies on hypoxia responses: implications for treatment sensitivity in triple-negative metastatic breast cancer. PLoS One 2011; 6:e25080. [PMID: 21966417 PMCID: PMC3178587 DOI: 10.1371/journal.pone.0025080] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 08/24/2011] [Indexed: 12/27/2022] Open
Abstract
Background In solid tumors, such as breast cancer, cells are exposed to hypoxia. Cancer cells adapt their metabolism by activating hypoxia-inducible factors (HIFs) that promote the transcription of genes involved in processes such as cell survival, drug resistance and metastasis. HIF-1 is also induced in an oxygen-independent manner through the activation of epidermal growth factor receptor tyrosine kinase (EGFR-TK). Triple-negative breast cancer (TNBC) is a subtype of invasive breast cancer characterized by negative expression of hormonal and HER2 receptors, and this subtype generally overexpresses EGFR. Sensitivity to three EGFR inhibitors (cetuximab, gefitinib and lapatinib, an HER2/EGFR-TK inhibitor) was evaluated in a metastatic TNBC cell model (MDA-MB-231), and the impact of these drugs on the activity and stability of HIF was assessed. Methodology/Principal Findings MDA-MB-231 cells were genetically modified to stably express an enhanced green fluorescent protein (EGFP) induced by hypoxia; the Ca9-GFP cell model reports HIF activity, whereas GFP-P564 reports HIF stability. The reporter signal was monitored by flow cytometry. HIF-1 DNA-binding activity, cell migration and viability were also evaluated in response to EGFR inhibitors. Cell fluorescence signals strongly increased under hypoxic conditions (> 30-fold). Cetuximab and lapatinib did not affect the signal induced by hypoxia, whereas gefitinib sharply reduced its intensity in both cell models and also diminished HIF-1 alpha levels and HIF-1 DNA-binding activity in MDA-MB-231 cells. This gefitinib feature was associated with its ability to inhibit MDA-MB-231 cell migration and to induce cell mortality in a dose-dependent manner. Cetuximab and lapatinib had no effect on cell migration or cell viability. Conclusion Resistance to cetuximab and lapatinib and sensitivity to gefitinib were associated with their ability to modulate HIF activity and stability. In conclusion, downregulation of HIF-1 through EGFR signaling seems to be required for the induction of a positive response to EGFR-targeted therapies in TNBC.
Collapse
Affiliation(s)
- Abderrahim El Guerrab
- Department of Oncogenetic, Centre Jean Perrin, Clermont-Ferrand, France
- ADELBIO, Faculty of Medicine, Centre Biomédical de Recherche et Valorisation, Clermont-Ferrand, France
| | - Rabah Zegrour
- ADELBIO, Faculty of Medicine, Centre Biomédical de Recherche et Valorisation, Clermont-Ferrand, France
| | - Carine-Christiane Nemlin
- ADELBIO, Faculty of Medicine, Centre Biomédical de Recherche et Valorisation, Clermont-Ferrand, France
| | - Flavie Vigier
- ADELBIO, Faculty of Medicine, Centre Biomédical de Recherche et Valorisation, Clermont-Ferrand, France
| | - Anne Cayre
- Department of Pathology, Centre Jean Perrin, Clermont-Ferrand, France
| | | | - Fabrice Rossignol
- ADELBIO, Faculty of Medicine, Centre Biomédical de Recherche et Valorisation, Clermont-Ferrand, France
| | - Yves-Jean Bignon
- Department of Oncogenetic, Centre Jean Perrin, Clermont-Ferrand, France
- * E-mail:
| |
Collapse
|
4
|
Coutanceau C, Brimaud S, Lamy C, Léger JM, Dubau L, Rousseau S, Vigier F. Review of different methods for developing nanoelectrocatalysts for the oxidation of organic compounds. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2007.12.043] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
5
|
Vigier F, Jurczakowski R, Lasia A. Reply to the letter of P. Zoltowski “Remarks on “Determination of hydrogen absorption isotherm and diffusion coefficient in Pd81Pt19 alloy” [F. Vigier et al., J. Electroanal. Chem. 588 (2006) 32]”. J Electroanal Chem (Lausanne) 2007. [DOI: 10.1016/j.jelechem.2006.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
6
|
|
7
|
Vigier F, Coutanceau C, Hahn F, Belgsir E, Lamy C. On the mechanism of ethanol electro-oxidation on Pt and PtSn catalysts: electrochemical and in situ IR reflectance spectroscopy studies. J Electroanal Chem (Lausanne) 2004. [DOI: 10.1016/j.jelechem.2003.08.019] [Citation(s) in RCA: 443] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
8
|
Vigier F, Gloaguen F, Léger JM, Lamy C. Electrochemical and spontaneous deposition of ruthenium at platinum electrodes for methanol oxidation: an electrochemical quartz crystal microbalance study. Electrochim Acta 2001. [DOI: 10.1016/s0013-4686(01)00680-6] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|