Title :

Machine Learning Analysis of the Cerebrovascular Thrombi Proteome in Human Ischemic Stroke: An Exploratory Study.

Author(s) :

Dargazanli, Cyril [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Zub, Emma [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Deverdun, Jeremy [Auteur]
Institut d’Imagerie Fonctionnelle Humaine [CHU Montpellier] [I2FH]
Decourcelle, Mathilde [Auteur]
BioCampus [BCM]
De Bock, Frédéric [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Labreuche, Julien [Auteur]
METRICS : Evaluation des technologies de santé et des pratiques médicales - ULR 2694
Lefèvre, Pierre-Henri [Auteur]
Département de Neuroradiologie[Montpellier]
Gascou, Grégory [Auteur]
Département de Neuroradiologie[Montpellier]
Derraz, Imad [Auteur]
Département de Neuroradiologie[Montpellier]
Riquelme Bareiro, Carlos [Auteur]
Département de Neuroradiologie[Montpellier]
Cagnazzo, Frederico [Auteur]
Département de Neuroradiologie [CHRU Montpellier]
Bonafé, Alain [Auteur]
Département de Neuroradiologie[Montpellier]
Marin, Philippe [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Costalat, Vincent [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Marchi, Nicola [Auteur]
Institut de Génomique Fonctionnelle [IGF]

Journal title :

Frontiers in Neurology

Abbreviated title :

Front Neurol

Volume number :

11

Pages :

575376

Publication date :

2020-11-29

ISSN :

1664-2295

English keyword(s) :

stroke
thrombus
cerebrovascular
mechanical thrombectomy
proteome
support vector machine learning
neuroradiology

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

Objective: Mechanical retrieval of thrombotic material from acute ischemic stroke patients provides a unique entry point for translational research investigations. Here, we resolved the proteomes of cardioembolic and ...
Show more >Objective: Mechanical retrieval of thrombotic material from acute ischemic stroke patients provides a unique entry point for translational research investigations. Here, we resolved the proteomes of cardioembolic and atherothrombotic cerebrovascular human thrombi and applied an artificial intelligence routine to examine protein signatures between the two selected groups. Methods: We specifically used n = 32 cardioembolic and n = 28 atherothrombotic diagnosed thrombi from patients suffering from acute stroke and treated by mechanical thrombectomy. Thrombi proteins were successfully separated by gel-electrophoresis. For each thrombi, peptide samples were analyzed by nano-flow liquid chromatography coupled to tandem mass spectrometry (nano-LC-MS/MS) to obtain specific proteomes. Relative protein quantification was performed using a label-free LFQ algorithm and all dataset were analyzed using a support-vector-machine (SVM) learning method. Data are available via ProteomeXchange with identifier PXD020398. Clinical data were also analyzed using SVM, alone or in combination with the proteomes. Results: A total of 2,455 proteins were identified by nano-LC-MS/MS in the samples analyzed, with 438 proteins constantly detected in all samples. SVM analysis of LFQ proteomic data delivered combinations of three proteins achieving a maximum of 88.3% for correct classification of the cardioembolic and atherothrombotic samples in our cohort. The coagulation factor XIII appeared in all of the SVM protein trios, associating with cardioembolic thrombi. A combined SVM analysis of the LFQ proteome and clinical data did not deliver a better discriminatory score as compared to the proteome only. Conclusion: Our results advance the portrayal of the human cerebrovascular thrombi proteome. The exploratory SVM analysis outlined sets of proteins for a proof-of-principle characterization of our cohort cardioembolic and atherothrombotic samples. The integrated analysis proposed herein could be further developed and retested on a larger patients population to better understand stroke origin and the associated cerebrovascular pathophysiology.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CHU Lille

Collections :

• METRICS : Evaluation des technologies de santé et des pratiques médicales - ULR 2694

Submission date :

2023-11-15T07:44:15Z
2023-12-11T12:54:40Z