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Super‐Resolution In...
Super‐Resolution Infrared Imaging of Polymorphic Amyloid Aggregates Directly in Neurons
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- Klementieva, Oxana (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Medicinsk mikrospektroskopi,Forskargrupper vid Lunds universitet,Other operations, LTH,Faculty of Engineering, LTH,Medical Microspectroscopy,Lund University Research Groups
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- Sandt, Christophe (författare)
- Synchrotron SOLEIL
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- Martinsson, Isak (författare)
- Lund University,Lunds universitet,Experimentell demensforskning,Forskargrupper vid Lunds universitet,Experimental Dementia Research,Lund University Research Groups
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- Kansiz, Mustafa (författare)
- Photothermal Spectroscopy Corporation
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- Keppler Gouras, Gunnar (författare)
- Lund University,Lunds universitet,Experimentell demensforskning,Forskargrupper vid Lunds universitet,Experimental Dementia Research,Lund University Research Groups
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- Borondics, Ferenc (författare)
- Synchrotron SOLEIL
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(creator_code:org_t)
- Wiley, 2020
- 2020
- Engelska 9 s.
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Ingår i: Advanced Science. - : Wiley. - 2198-3844.
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://onlinelibrar...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Loss of memory during Alzheimer's disease (AD), a fatal neurodegenerative disorder, is associated with neuronal loss and the aggregation of amyloid proteins into neurotoxic β‐sheet enriched structures. However, the mechanism of amyloid protein aggregation is still not well understood due to many challenges when studying the endogenous amyloid structures in neurons or in brain tissue. Available methods either require chemical processing of the sample or may affect the amyloid protein structure itself. Therefore, new approaches, which allow studying molecular structures directly in neurons, are urgently needed. A novel approach is tested, based on label‐free optical photothermal infrared super‐resolution microspectroscopy, to study AD‐related amyloid protein aggregation directly in the neuron at sub‐micrometer resolution. Using this approach, amyloid protein aggregates are detected at the subcellular level, along the neurites and strikingly, in dendritic spines, which has not been possible until now. Here, a polymorphic nature of amyloid structures that exist in AD transgenic neurons is reported. Based on the findings of this work, it is suggested that structural polymorphism of amyloid proteins that occur already in neurons may trigger different mechanisms of AD progression.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Neurovetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Neurosciences (hsv//eng)
Nyckelord
- Optical photothermal infrared spectroscopyon, Alzheimer’s disease, protein aggregation, structure-function relation, disease mechanism
- super-resolution
- Alzheimer’s disease
- aggregation
- structure-function
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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