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Bhuckory S, Mattera L, Wegner KD, Qiu X, Wu YT, Charbonnière LJ, Reiss P, Hildebrandt N. Direct conjugation of antibodies to the ZnS shell of quantum dots for FRET immunoassays with low picomolar detection limits. Chem Commun (Camb) 2016; 52:14423-14425. [DOI: 10.1039/c6cc08835j] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Direct conjugation of IgG, F(ab′)2, and Fab antibodies to the ZnS shells of penicillamine-coated quantum dots for high-sensitivity FRET biosensing.
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Affiliation(s)
- S. Bhuckory
- NanoBioPhotonics (nanofret.com)
- Institute for Integrative Biology of the Cell (I2BC)
- Université Paris-Saclay
- Université Paris-Sud
- CNRS
| | - L. Mattera
- Univ. Grenoble Alpes
- INAC-SyMMES
- 38054 Grenoble Cedex 9
- France
- CEA
| | - K. D. Wegner
- NanoBioPhotonics (nanofret.com)
- Institute for Integrative Biology of the Cell (I2BC)
- Université Paris-Saclay
- Université Paris-Sud
- CNRS
| | - X. Qiu
- NanoBioPhotonics (nanofret.com)
- Institute for Integrative Biology of the Cell (I2BC)
- Université Paris-Saclay
- Université Paris-Sud
- CNRS
| | - Y.-T. Wu
- NanoBioPhotonics (nanofret.com)
- Institute for Integrative Biology of the Cell (I2BC)
- Université Paris-Saclay
- Université Paris-Sud
- CNRS
| | - L. J. Charbonnière
- Institut Pluridisciplinaire Hubert Curien (IPHC)
- UMR 7178 CNRS/Université de Strasbourg
- Laboratoire d’Ingénierie Moléculaire Appliquée à l’Analyse (LIMAA)
- ECPM
- 67087 Strasbourg Cedex 2
| | - P. Reiss
- Univ. Grenoble Alpes
- INAC-SyMMES
- 38054 Grenoble Cedex 9
- France
- CEA
| | - N. Hildebrandt
- NanoBioPhotonics (nanofret.com)
- Institute for Integrative Biology of the Cell (I2BC)
- Université Paris-Saclay
- Université Paris-Sud
- CNRS
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Caminale M, Moroni R, Torelli P, Lin WC, Canepa M, Mattera L, Bisio F. Reentrant surface anisotropy in the antiferromagnetic/ferromagnetic bilayer Mn/Co/Cu(001). Phys Rev Lett 2014; 112:037201. [PMID: 24484162 DOI: 10.1103/physrevlett.112.037201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Indexed: 06/03/2023]
Abstract
We investigated the magnetic anisotropy energy of monatomic surface-step atoms in antiferromagnetic/ferromagnetic (AF/FM) epitaxial Mn/Co bilayers grown on vicinal Cu(001) surfaces. The step-induced anisotropy of the Co/Cu(001) films was quenched upon submonolayer Mn deposition, but a reentrant uniaxial surface anisotropy was observed for Mn thickness (tMn) between 1 and 2 monolayers, which disappears for Mn thickness above 2 monolayers. In the Mn/Co/Cu(001) system, Mn films undergo a tMn-dependent transition from FM to AF in the 1-2 Mn monolayer thickness range, which entails the coexistence of FM and AF Mn phases in the film. The observation of a sizeable uniaxial anisotropy exclusively in the Mn-thickness range of coexistence of the FM and AF phases points out the crucial role of the boundaries between FM and AF regions within the Mn film. A symmetry-breaking mechanism of a magnetic type, rather than a purely geometric one, is therefore proposed as the origin of the reentrant anisotropy.
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Affiliation(s)
- M Caminale
- Dipartimento di Fisica, Università di Genova and CNISM, Sede Consorziata di Genova, via Dodecaneso 33, I-16146 Genova, Italy
| | - R Moroni
- CNR-SPIN, Corso Perrone 24, I-16152 Genova, Italy
| | - P Torelli
- Laboratorio TASC, IOM-CNR, S.S. 14 km 163.5, Basovizza, I-34149 Trieste, Italy
| | - W C Lin
- Department of Physics, National Taiwan Normal University, 116 Taipei, Taiwan
| | - M Canepa
- Dipartimento di Fisica, Università di Genova and CNISM, Sede Consorziata di Genova, via Dodecaneso 33, I-16146 Genova, Italy
| | - L Mattera
- Dipartimento di Fisica, Università di Genova and CNISM, Sede Consorziata di Genova, via Dodecaneso 33, I-16146 Genova, Italy
| | - F Bisio
- CNR-SPIN, Corso Perrone 24, I-16152 Genova, Italy
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Caminale M, Anghinolfi L, Magnano E, Bondino F, Canepa M, Mattera L, Bisio F. Tuning the magneto-optical response of iron oxide nanocrystals in Au- and Ag-based plasmonic media. ACS Appl Mater Interfaces 2013; 5:1955-1960. [PMID: 23459464 DOI: 10.1021/am3027234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We investigated the magneto-optical response of chemically synthesized iron oxide magnetic nanocrystals, optically coupled with ordered planar arrays of plasmonic nanoparticles. We compare the signals from two classes of systems, featuring either Au or Ag as the plasmonic counterpart. The localized surface plasmon resonance of the Ag and Au nanoparticles arrays were superimposed or detuned, respectively, with respect to the dominant magneto-optical transitions of the magnetic material. Under resonance, a significant enhancement of the magneto-optical signal was observed. In both cases, we could separate the purely plasmonic and the magnetic contributions in the magneto-optical spectrum of the optically coupled composite based on their different magnetic-field dependence.
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Affiliation(s)
- M Caminale
- Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146 Genova, Italy
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Mattera L, Chevillard-Briet M, Philippe M, Corpet D, Ueda T, Fukunaga R, Trouche D, Escaffit F. R68: Contrôle de la formation des lésions prénéoplasiques coliques par le ratio Tip60/p400 : preuve de principe in vivo d’une nouvelle cible thérapeutique. Bull Cancer 2010. [DOI: 10.1016/s0007-4551(15)30985-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Canepa M, Lavagnino L, Pasquali L, Moroni R, Bisio F, De Renzi V, Terreni S, Mattera L. Growth dynamics of L-cysteine SAMs on single-crystal gold surfaces: a metastable deexcitation spectroscopy study. J Phys Condens Matter 2009; 21:264005. [PMID: 21828453 DOI: 10.1088/0953-8984/21/26/264005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report on a metastable deexcitation spectroscopy investigation of the growth of L-cysteine layers deposited under UHV conditions on well-defined Au(110)- (1 × 2) and Au(111) surfaces. The interaction of He(*) with molecular orbitals gave rise to well-defined UPS-like Penning spectra which provided information on the SAM assembly dynamics and adsorption configurations. Penning spectra have been interpreted through comparison with molecular orbital DFT calculations of the free molecule and have been compared with XPS results of previous works. Regarding adsorption of first-layer molecules at room temperature (RT), two different growth regimes were observed. On Au(110), the absence of spectral features related to orbitals associated with SH groups indicated the formation of a compact SAM of thiolate molecules. On Au(111), the data demonstrated the simultaneous presence, since the early stages of growth, of strongly and weakly bound molecules, the latter showing intact SH groups. The different growth mode was tentatively assigned to the added rows of the reconstructed Au(110) surface which behave as extended defects effectively promoting the formation of the S-Au bond. The growth of the second molecular layer was instead observed to proceed similarly for both substrates. Second-layer molecules preferably adopt an adsorption configuration in which the SH group protrudes into the vacuum side.
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Affiliation(s)
- M Canepa
- CNISM and Department of Physics, University of Genova, via Dodecaneso 33, I-16145 Genova, Italy
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Mattera L, Escaffit F, Pillaire MJ, Selves J, Tyteca S, Hoffmann JS, Gourraud PA, Chevillard-Briet M, Cazaux C, Trouche D. The p400/Tip60 ratio is critical for colorectal cancer cell proliferation through DNA damage response pathways. Oncogene 2009; 28:1506-17. [PMID: 19169279 DOI: 10.1038/onc.2008.499] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The Tip60 histone acetyltransferase belongs to a multimolecular complex that contains many chromatin remodeling enzymes including the ATPase p400, a protein involved in nucleosomal incorporation of specific histone variants and that can directly or indirectly repress some Tip60-dependent pathways. Tip60 activity is critical for the cellular response to DNA damage and is affected during cancer progression. Here, we found that the ratio between Tip60 and p400 mRNAs is affected in most colorectal carcinoma. Strikingly, reversing the p400/Tip60 imbalance by Tip60 overexpression or the use of siRNAs resulted in increased apoptosis and decreased proliferation of colon-cancer-derived cells, suggesting that this ratio defect is important for cancer progression. Furthermore, we demonstrate that the p400/Tip60 ratio controls the oncogene-induced DNA damage response, a known anticancer barrier. Finally, we found that it is also critical for the response to 5-fluorouracil, a first-line treatment against colon cancer. Together, our data indicate that the p400/Tip60 ratio is critical for colon cancer cells proliferation and response to therapeutic drugs through the control of stress-response pathways.
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Bisio F, Moroni R, Buatier de Mongeot F, Canepa M, Mattera L. Isolating the step contribution to the uniaxial magnetic anisotropy in nanostructured Fe/Ag(001) films. Phys Rev Lett 2006; 96:057204. [PMID: 16486975 DOI: 10.1103/physrevlett.96.057204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2005] [Indexed: 05/06/2023]
Abstract
We have investigated the possibility of isolating the step-induced in-plane uniaxial magnetic anisotropy in Fe/Ag(001) films on which nanoscale surface ripples were fabricated by the ion sculpting technique. For rippled Fe films deposited on flat Ag(001), the steps created along the ripple sidewalls are shown to be the only source of uniaxial anisotropy. Ion sculpting of ultrathin magnetic films allows one to selectively study the step-induced anisotropy and to investigate the correlation between local atomic environment and magnetic properties.
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Affiliation(s)
- F Bisio
- CNR-INFM Unità di Genova and Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146 Genova, Italy
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Bisio F, Terreni S, Gonella G, Floreano L, Morgante A, Canepa M, Mattera L. Temperature driven reversible breakdown of pseudomorphism in ultrathin Fe/Cu3Au films. Phys Rev Lett 2004; 93:106103. [PMID: 15447423 DOI: 10.1103/physrevlett.93.106103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2004] [Indexed: 05/24/2023]
Abstract
We observe that ultrathin Fe/Cu(3)Au(001) films in the 6-13 A thickness range, beyond the thickness of pseudomorphism breakdown at room temperature, exhibit a temperature dependent structural phase transition in the range T(c) approximately 345-380 K. In the high temperature state the Fe film becomes pseudomorphic, while breakdown of pseudomorphism reversibly occurs as the system is cooled below the transition temperature. The difference between substrate and overlayer thermal expansion coefficient is highlighted as the driving force for the observed transition.
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Affiliation(s)
- F Bisio
- Unità INFM and CNR-IMEM, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146 Genova, Italy.
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Moroni R, Sekiba D, Buatier de Mongeot F, Gonella G, Boragno C, Mattera L, Valbusa U. Uniaxial magnetic anisotropy in nanostructured Co/Cu(001): from surface ripples to nanowires. Phys Rev Lett 2003; 91:167207. [PMID: 14611439 DOI: 10.1103/physrevlett.91.167207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2003] [Indexed: 05/24/2023]
Abstract
We have investigated the correlation between morphology and magnetic anisotropy in nanostructured Co films on Cu(001). The formation of nanoscale ripples by ion erosion is found to deeply affect the magnetic properties of the Co film. A surface-type uniaxial magnetic anisotropy with easy axis parallel to the ripples is observed. The origin of the magnetic anisotropy has been identified with the modification of thermodynamic-step distribution induced by ripple formation. At higher ion doses, when Co ripples detach and crystalline nanowires form, a strong enhancement of the magnetic anisotropy due to magnetostatic contributions is observed.
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Affiliation(s)
- R Moroni
- Unità INFM di Genova, Dipartimento di Fisica dell'Università di Genova, and IMEM-CNR Sezione di Genova, via Dodecaneso 33, I-16146 Genova, Italy
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Gonella G, Cavalleri O, Emilianov I, Mattera L, Canepa M, Rolandi R. Spectro-ellipsometry on cadmium stearate Langmuir–Blodgett films. Materials Science and Engineering: C 2002. [DOI: 10.1016/s0928-4931(02)00208-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Boato G, Cantini P, Garibaldi U, Levi AC, Mattera L, Spadacini R, Tommei GE. Diffraction and rainbow in atom-surface scattering. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3719/6/21/003] [Citation(s) in RCA: 56] [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: 11/12/2022]
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Staicu-Casagrande EM, Guillemot L, Lacombe S, Esaulov VA, Canepa M, Mattera L, Pasquali L, Nannarone S. Adsorbate phase transformations and the coverage-dependent oscillation of electron transfer probabilities. J Chem Phys 2000. [DOI: 10.1063/1.482017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Canepa M, Terreni S, Narducci E, Mattera L. Thermal desorption from ordered chemisorbed phases studied by helium scattering: Oxygen on Ag(110). J Chem Phys 1999. [DOI: 10.1063/1.477838] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Salvietti M, Moroni R, Ferro P, Canepa M, Mattera L. Simple model to calculate surface magnetization from spin-polarized metastable deexcitation spectroscopy: Fe/Ag(100). Phys Rev B Condens Matter 1996; 54:14758-14764. [PMID: 9985485 DOI: 10.1103/physrevb.54.14758] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Pasquali L, Nannarone S, Canepa M, Mattera L. GaAs(110) surface electronic structure by metastable deexcitation spectroscopy. Phys Rev B Condens Matter 1995; 52:17335-17341. [PMID: 9981163 DOI: 10.1103/physrevb.52.17335] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Canepa M, Cantini P, Fossa F, Mattera L, Terreni S. O(2 x 1)-Ag(110) missing-row reconstruction: Structure determination by low-energy ion scattering. Phys Rev B Condens Matter 1993; 47:15823-15829. [PMID: 10005979 DOI: 10.1103/physrevb.47.15823] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Canepa M, Cantini P, Lo Vetere S, Mattera L, Salvietti M, Terreni S. He diffraction study of the OH(1×1)−Ag(110) phase. ACTA ACUST UNITED AC 1993. [DOI: 10.1007/bf02456933] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Canepa M, Mattera L, Polese M, Terreni S. Electronic states of weakly chemisorbed systems studied by comparing photoemission and metastable deexcitation spectroscopies: CO on Ag(110). Chem Phys Lett 1991. [DOI: 10.1016/0009-2614(91)90056-f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Dondi MG, Mattera L, Terreni S, Tommasini F, Linke U. He-Ag(110) interaction potential by new bound-state-resonance measurements. Phys Rev B Condens Matter 1986; 34:5897-5899. [PMID: 9940432 DOI: 10.1103/physrevb.34.5897] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Ghio E, Mattera L, Salvo C, Tommasini F, Valbusa U. Vibrational spectrum of H and D on the (0001) graphite surface from scattering experiments. J Chem Phys 1980. [DOI: 10.1063/1.439855] [Citation(s) in RCA: 114] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Govers TR, Mattera L, Scoles G. Molecular beam experiments on the sticking and accommodation of molecular hydrogen on a low‐temperature substrate. J Chem Phys 1980. [DOI: 10.1063/1.439013] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Boato G, Cantini P, Mattera L. Elastic and rotationally inelastic diffraction of hydrogen molecular beams from the (001) face of LiF at 80°K. J Chem Phys 1976. [DOI: 10.1063/1.433134] [Citation(s) in RCA: 87] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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