Single Molecule Nanoimaging of Cell Membrane Glycoprocesses
RESEARCH FELLOW

Juan Torreño Piña
Ramón y Cajal Fellow
Research Summary
We are interested in the study of glycan-based processes on the cell membrane of human cells at the single molecule level. We are specially focused on the role of the glycocalyx in mediating and regulating the early virus-host cell interactions in viral infections. Moreover, we aim to directly visualize how antibodies might neutralize these interactions at the single antibody-virus level. To this aim, we will exploit advanced single molecule fluorescence techniques with high spatial and temporal resolution applied to living cells.
Research Lines
Initial virus-host interactions determine the fate of viral infections. Hence, the study of these interactions might shed insight into the mechanism of viral capture and entry by the host cell. It has been suggested that the viral and host cell glycocalyces might have profound implications in regulating these processes. However, a direct characterization of the role of glycans and glycoproteins in viral infections remain elusive due to the lack of non-invasive techniques. Advanced single molecule based fluorescence nanoscopy techniques have the capability of directly visualizing glycans and glycoproteins on the viral and host cell membrane on intact living cells at the relevant spatiotemporal scales.
In the lab, we are especially interested in the HIV virus and how the glycocalyx might potentially modulate the initial viral capture by the host cell. In this regard, we will specially focus on dendritic and T cells. To this end, we will apply a single molecule based imaging technique called HiDenMaps which is able to directly image multi-glycoproteins and glycans in a multi-color approach. This innovative technique will shed unprecedented insight into how multi-component interactions of the glycocalyces fine-tune HIV viral capture by the host cell. As such, this innovative approach might bring new concepts and ideas that might help in designing novel anti-viral therapies.


Group Members
Funding
Our research is funded by national and international institutions as indicated below. For more details, please check the general Funding Section at the CNB website.

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