Dataset Information

Don’t die like me: Which proteins are responsible for the selective neuronal vulnerability within the substantia nigra?

ABSTRACT: A hallmark of Parkinson’s disease is the specific degeneration of dopaminergic neurons in the substantia nigra pars compacta. Interestingly, not all of these neurons are equally affected. Studies revealed that neurons located more ventrally within the substantia nigra pars compacta have a higher prevalence to degenerate than those located in the dorsal tier. Reasons for this selective neuronal vulnerability are still unknown. The objective of the present study was to gain a better understanding of molecular differences between these two neuronal subpopulations that can explain the selective neuronal vulnerability within the substantia nigra. For this, both neuronal subpopulations were specifically isolated with laser microdissection. Following, their proteome was analyzed via data independent acquisition mass spectrometry. The results of this study revealed a minor number of proteins that were either specific or differentially expressed in one of the examined neuronal subpopulations within the substantia nigra. These proteins are associated with the cytoskeleton, neuronal plasticity, or calcium homeostasis. With these findings a deeper understanding can be gained of the selective neuronal vulnerability within the substantia nigra and of protective mechanisms against neurodegeneration in specific neuronal subpopulations.

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Substantia Nigra, Neuron Of The Substantia Nigra

SUBMITTER: Annika Guntermann

LAB HEAD: Caroline May

PROVIDER: PXD037696 | Pride | 2024-08-09

REPOSITORIES: pride

ACCESS DATA

Dataset's files

Source:

Items per page:

1 - 5 of 40

Publications

Don't die like me: Which proteins are responsible for the selective neuronal vulnerability within the substantia nigra?

Steinbach Simone S Molina Mariana M Grinberg Lea T LT Aring Luisa L Guntermann Annika A Marcus Katrin K Heinsen Helmut H Paraizo Leite Renata E RE May Caroline C

PloS one 20240731 7

A hallmark of Parkinson's disease is the specific degeneration of dopaminergic neurons in the substantia nigra pars compacta. Interestingly, not all of these neurons are affected to the same extent. Studies revealed that neurons located more ventrally within the substantia nigra pars compacta have a higher prevalence to degenerate than those located in the dorsal tier. The underlying reasons for this selective neuronal vulnerability are still unknown. The aim of the present study was to gain a b ...[more]

PMID: 39089320

Publication: 1/2

Similar Datasets

Project description:Very little is known about how intervertebral disc (IVD) is formed or maintained. Members of the TGF-ß superfamily are secreted signaling proteins that regulate many aspects of development including cellular differentiation. We recently showed that deletion of Tgfbr2 in Col2a expressing tissue results in alterations in development of IVD annulus fibrosus. The results suggested TGF-ß has an important role in regulating development of the axial skeleton, however, the mechanistic basis of TGF-ß action in these specialized joints is not known. One of the hurdles to understanding development of IVD is a lack of known markers. To identify genes that are enriched in the developing IVD and to begin to understand the mechanism of TGF-ß action in IVD development, we undertook a global analysis of gene expression comparing gene expression profiles in developing vertebrae and IVD. We also compared expression profiles in tissues from wild type and Tgfbr2 mutant mice. Lists of IVD and vertebrae enriched genes were generated. Expression patterns for several genes were verified either through in situ hybridization or literature/ database searches resulting in a list of genes that can be used as markers of IVD. Cluster analysis using genes listed under the Gene Ontology terms multicellular organism development and pattern specification indicated that mutant IVD more closely resembled vertebrae than wild type IVD. We propose TGF-ß has two functions in IVD development: 1) to prevent chondrocyte differentiation in the presumptive IVD and 2) to promote differentiation of annulus fibrosus from sclerotome. We have identified genes that are enriched in the IVD and regulated by TGF-ß that warrant further investigation as regulators of IVD development. Thirteen samples were analyzed. This includes three biological replicates of laser captured IVD from E13.5 day control mice, three biological replicates of laser captured vertebrae from the same E13.5 day control mice, three biological relicates of laser captured vertebrae from E13.5 day Col2aCre;Tgfbr2lox/lox mice, and four biological replicates of laser captured IVD from E13.5 day Col2aCre;Tgfbr2lox/lox mice.

			Action	DRS
	d_QExHF03314.dat	Other
	d_QExHF03314.mgf	Mgf
	d_QExHF03314.mzid	Mzid
	d_QExHF03314.raw	Raw
	d_QExHF03347.dat	Other