Dataset Information

Protein changes in the infarct region of ischemia/reperfused rat hearts revealed by spatialOMx

ABSTRACT: Myocardial infarction (MI) is the most common cause of death worldwide. Timely diagnosis and early restoration of the blood flow prevents further tissue damage. However, this sudden reperfusion can also lead to so-called ischemia/reperfusion (I/R) injury. Although the different pathological processes activated in I/R injury, like cell death and inflammation have been previously addressed, the exact pathophysiological mechanisms remain unclear. For the development of strategies that minimize myocardial damage a better understanding of the underlying alterations in protein and signaling pathways is required. In this study we aim to identify the protein signature of cardiac I/R injury, therefore we use a spatialOMx approach, combining protein mass spectrometry imaging (MSI) and a classical label-free proteomics workflow on the same tissue section, to further address the observed alterations

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Rattus Norvegicus (rat)

TISSUE(S): Heart, Cardiac Muscle Cell

DISEASE(S): Myocardial Ischemia

SUBMITTER: Stephanie Mezger

LAB HEAD: Berta Cillero-Pastor

PROVIDER: PXD026115 | Pride | 2023-03-11

REPOSITORIES: Pride

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Publications

Protein Alterations in Cardiac Ischemia/Reperfusion Revealed by Spatial-Omics.

Mezger Stephanie T P STP Mingels Alma M A AMA Soulié Matthieu M Peutz-Kootstra Carine J CJ Bekers Otto O Mulder Paul P Heeren Ron M A RMA Cillero-Pastor Berta B

International journal of molecular sciences 20221110 22

Myocardial infarction is the most common cause of death worldwide. An understanding of the alterations in protein pathways is needed in order to develop strategies that minimize myocardial damage. To identify the protein signature of cardiac ischemia/reperfusion (I/R) injury in rats, we combined, for the first time, protein matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) and label-free proteomics on the same tissue section placed on a conductive slide. Wistar ra ...[more]

PMID: 36430335

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Project description:Diethlstilbestrol (DES) is a synthetic estrogen prescribed to several millions of pregnant women worldwide. The risk for breast cancer after age 40 in women prenatally exposed to DES has been reported, however, the precise mechanism of susceptibilities to breast cancer remains to be resolved. To understand the mechanism of effect of intrauterine exposure to DES on human mammary glands at peripubertal stage, we investigated the global gene expression profile of terminal end buds (TEBs), the target of carcinogen, in rat mammary glamds at postnatal days (PND) 35 and 49, equivalent to peripubertal stage in human, exposed to low or high dose of DES at neonatal period. In all group, the number of TEBs was gradually increased and peaked at PND35 and decreased at PND49. At PND 35 and 49, low dose of DES-treated group showed highest number of TEBs. At PND35, β- and γ-casein mRNA expression inreased 8.19-fold and 26.05-fold, respectively, and the most significant network revealed by IPA analyses showed relevance of NF-κB in low dose of DES-treated group. The present findings suggested that deregulation of mammary gland differentiation and development-related genes group may contribute to the increase of number of TEBs at critical period of carcinogen susceptibilities. Experiment: We used laser capture microdissection to specifically isolate the cells from terminal end buds (TEBs) in rat mammary gland at 35 and 49 days after birth. Inbred Sprague-Dawley female rats were subcutaneously given 0.05ml sesame oil (group I, control) and either 1 μg (group II) or 100 μg (group III) diethlstilbestrol (DES, Sigma Chemical Co., St. Louis, Mo. USA) dissolved in 0.05 ml sesame oil within 24 hr of birth. Animal were weaned at 21 days of birth and each group of rats was autopsied at 35 and 49 days of birth. From group I (35 days of birth: n=2, 49 days of birth: n=2), group II (35 days of birth: n=2, 49 days of birth: n=2), group III (35 days of birth: n=2, 49 days of birth: n=2), we performed a hybridization, respectively.

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Dataset Information

Protein changes in the infarct region of ischemia/reperfused rat hearts revealed by spatialOMx

Publications

Protein Alterations in Cardiac Ischemia/Reperfusion Revealed by Spatial-Omics.

Similar Datasets

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