1
|
Vukosavljevic B, Hittinger M, Hachmeister H, Pilger C, Murgia X, Gepp MM, Gentile L, Huwer H, Schneider-Daum N, Huser T, Lehr CM, Windbergs M. Vibrational spectroscopic imaging and live cell video microscopy for studying differentiation of primary human alveolar epithelial cells. J Biophotonics 2019; 12:e201800052. [PMID: 30597770 DOI: 10.1002/jbio.201800052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 12/17/2018] [Accepted: 12/28/2018] [Indexed: 06/09/2023]
Abstract
Alveolar type II (ATII) cells in the peripheral human lung spontaneously differentiate toward ATI cells, thus enabling air-blood barrier formation. Here, linear Raman and coherent anti-Stokes Raman scattering (CARS) microscopy are applied to study cell differentiation of freshly isolated ATII cells. The Raman spectra can successfully be correlated with gradual morphological and molecular changes during cell differentiation. Alveolar surfactant rich vesicles in ATII cells are identified based on phospholipid vibrations, while ATI-like cells are characterized by the absence of vesicular structures. Complementary, CARS microscopy allows for three-dimensional visualization of lipid vesicles within ATII cells and their secretion, while hyperspectral CARS enables the distinction between cellular proteins and lipids according to their vibrational signatures. This study paves the path for further label-free investigations of lung cells and the role of the pulmonary surfactant, thus also providing a basis for rational development of future lung therapeutics.
Collapse
Affiliation(s)
- Branko Vukosavljevic
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Saarbrücken, Germany
- PharmBioTec GmbH, Saarbrücken, Germany
| | - Marius Hittinger
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Saarbrücken, Germany
- PharmBioTec GmbH, Saarbrücken, Germany
| | - Henning Hachmeister
- Biomolecular Photonics, Faculty of Physics, Bielefeld University, Bielefeld, Germany
| | - Christian Pilger
- Biomolecular Photonics, Faculty of Physics, Bielefeld University, Bielefeld, Germany
| | - Xabier Murgia
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Saarbrücken, Germany
| | - Michael M Gepp
- Fraunhofer Institute for Biomedical Engineering IBMT, Sulzbach, Germany
| | - Luca Gentile
- Fraunhofer Institute for Biomedical Engineering IBMT, Sulzbach, Germany
| | - Hanno Huwer
- Heart and Thoracic Surgery, SHG Kliniken Völklingen, Saarbrücken, Germany
| | - Nicole Schneider-Daum
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Saarbrücken, Germany
| | - Thomas Huser
- Biomolecular Photonics, Faculty of Physics, Bielefeld University, Bielefeld, Germany
| | - Claus-Michael Lehr
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Saarbrücken, Germany
- PharmBioTec GmbH, Saarbrücken, Germany
- Department of Pharmacy, Saarland University, Saarbrücken, Germany
| | - Maike Windbergs
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Saarbrücken, Germany
- PharmBioTec GmbH, Saarbrücken, Germany
- Institute of Pharmaceutical Technology and Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany
| |
Collapse
|