Exploration of the lactation function of protein phosphorylation sites in goat mammary tissues by phosphoproteome analysis

Abstract Background Protein phosphorylation plays an important role in lactation. Differentially modified phosphorylation sites and phosphorylated proteins between peak lactation (PL, 90 days postpartum) and late lactation (LL, 280 days postpartum) were investigated using an integrated approach, namely, liquid chromatography with tandem mass spectrometry (LC-MS/MS) and tandem mass tag (TMT) labeling, to determine the molecular changes in the mammary tissues during the different stages of goat lactation. Results A total of 1,938 (1,111 upregulated, 827 downregulated) differentially modified phosphorylation sites of 1,172 proteins were identified (P values < 0.05 and fold change of phosphorylation ratios > 1.5). Multiple phosphorylation sites of FASN, ACACA, mTOR, PRKAA, IRS1, RPS6KB, EIF4EBP1, JUN, and TSC2 were different in PL compared with LL. In addition, the Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis showed that the calcium signaling pathway, oxytocin signaling pathway and MAPK signaling pathway were enriched. The western blot results showed that the phosphorylation levels of ACACA (Ser80), EIF4EBP1 (Thr46) and IRS1 (Ser312) increased and JUN (Ser63) decreased in PL compared with LL. These results were consistent with the phosphoproteome results. Conclusions In this study, we identified for the first time the differentially modified phosphorylation sites in goat mammary tissues between PL and LL. These results indicate that the multiple differentially modified phosphorylation sites of FASN, ACACA, mTOR, PRKAA, IRS1, RPS6KB, EIF4EBP1, TSC2, and JUN and proteins involved in the calcium signaling pathway, oxytocin signaling pathway, and MAPK signaling pathway are worthy of further exploration.

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Identification of microRNA-Regulated Pathways through a Integration of Mcrorna-mRNA Microarray and Bioinformatics Analysis in CD34+ Cells of Myelodysplastic Syndromes

Blood ◽

10.1182/blood.v124.21.3238.3238 ◽

2014 ◽

Vol 124 (21) ◽

pp. 3238-3238

Author(s):

Xiao Li ◽

Xu Feng ◽

Chunkang Chang ◽

Qi He ◽

Wu Lingyun

Keyword(s):

Calcium Signaling ◽

Signaling Pathway ◽

Notch Signaling Pathway ◽

Mapk Signaling ◽

Akt Signaling ◽

Mapk Signaling Pathway ◽

Akt Signaling Pathway ◽

Calcium Signaling Pathway ◽

Cd34 Cells ◽

Mrna Microarray

Abstract Background MicroRNAs (miRNAs) are considered to play a key role in the pathogenesis of myelodysplastic syndromes (MDS). However, the effect of miRNA and targeted mRNA on signal transduction is not fully understood in MDS. Objective The objective of this study is to identify the miRNAs-regulated pathways. Methods Affymetrix GeneChip microRNA and PrimeView Array were used to analyze miRNAs and gene expression profile of CD34+ cells in 12 MDS patients and 6 healthy controls. Comprehensive bioinformatics analysis of the coordinate expression of miRNAs and mRNAs including Difference, Go, Pathway, Pathway-network, miRNA-Gene-Network and miRNA-Go-Network analysis was performed to identify the miRNAs-regulated networks. Results 1. 34 differentially expressed miRNAs (5 up- and 29 down-regulated miRNAs) and 1783 mRNAs (405 up- and 1378 down-regulated mRNAs) in CD34+ cells from MDS and Healthy controls were identified by miRNA and mRNA microarray, respectively (Fig.1). 2. 25 dysregulated miRNAs and 234 targeted mRNAs were identified by a combination of Pearson's correlation analysis and prediction by TargetScan; 394 target relationship of miRNAs was established (Fig.2). 3. Go analysis revealed that these miRNA-mRNAs pairs were involved in signal transduction, apoptotic process, DNA-dependent transcription regulation, protein phosphophoration, etc. Pathway analysis showed that MAPK, JAK/STAT and PI3K/Akt signaling pathways might be regulated by these miRNA-mRNAs pairs (Fig.3). 4. The pathway-network analysis revealed that MAPK signaling pathway, Jak-Stat signaling pathway and apoptosis signaling pathway (displayed by red cycle) located in the downstream of signal networks (Fig. 3E). Dysregulation of These pathways may be more meaningful for explaining the pathogenesis of MDS. 5. Through a combination of Pathway, miRNA-Gene-Network and miRNA-Go- Network analysis, 29 miRNA-mRNA-regulated pathways were identified such as miR-148a/TEK/PI3K-Akt signaling pathway, miR-195/BDNF/MAPK signaling pathway, miR-195/DLL1/Notch signaling pathway, miR-145/CCND2/ JAK-STAT signaling pathway, etc. (Table 1). Conclusion Alteration expression of several miRNAs and targeted mRNAs might have an important impact on cancer-related cellular pathways including MAPK, PI3K/Akt, JAK/STAT, etc. The role of these miRNAs-mediated pathways in pathogenesis of MDS merit further investigation. Fig. 1 Affymetrix mcroRNA and mRNA microarray in MDS Fig. 1. Affymetrix mcroRNA and mRNA microarray in MDS Fig. 2 Significant miRNA-mRNA pairs identified through a integration of mcroRNA-mRNA microarray Fig. 2. Significant miRNA-mRNA pairs identified through a integration of mcroRNA-mRNA microarray Table 1. Parts of dysregulated miRNAs, genes and targeted pathway in MDS MicroRNA Style Gene_synbol Pathway miR-148a Down TEK PI3K-Akt signaling pathway ITGA9 PI3K-Akt signaling pathway KIT PI3K-Akt signaling pathway HMGA2 Transcriptional misregulation in cancer miR-145 Down HHEX Transcriptional misregulation in cancer MEIS1 Transcriptional misregulation in cancer miR-200c Down EFNA1 PI3K-Akt signaling pathway KLF3 Transcriptional misregulation in cancer miR-195 Up BDNF MAPK signaling pathway CDC25B MAPK signaling pathway DLL1 Notch signaling pathway MRAS MAPK signaling pathway miR-17 Up CAMK2D Calcium signaling pathway miR-19a Up MAML1 Notch signaling pathway SLC8A1 Calcium signaling pathway THBS1 Proteoglycans in cancer TNF MAPK signaling pathway TNFRSF1B Adipocytokine signaling pathway ACSL1 Adipocytokine signaling pathway EDNRB Calcium signaling pathway miR-19b Up CALM1 Calcium signaling pathway TNF Proteoglycans in cancer Fig. 3 Go and pathway analysis Fig. 3. Go and pathway analysis Disclosures No relevant conflicts of interest to declare.

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MAPK: A Key Player in the Development and Progression of Stroke

CNS & Neurological Disorders - Drug Targets ◽

10.2174/1871527319666200613223018 ◽

2020 ◽

Vol 19 (4) ◽

pp. 248-256

Author(s):

Yangmin Zheng ◽

Ziping Han ◽

Haiping Zhao ◽

Yumin Luo

Keyword(s):

Ischemic Stroke ◽

Signaling Pathway ◽

Complex Disease ◽

Therapeutic Targets ◽

Cell Types ◽

Mapk Signaling ◽

Mapk Signaling Pathway ◽

Effective Prevention ◽

Prevention And Treatment ◽

Different Cell Types

Conclusion: Stroke is a complex disease caused by genetic and environmental factors, and its etiological mechanism has not been fully clarified yet, which brings great challenges to its effective prevention and treatment. MAPK signaling pathway regulates gene expression of eukaryotic cells and basic cellular processes such as cell proliferation, differentiation, migration, metabolism and apoptosis, which are considered as therapeutic targets for many diseases. Up to now, mounting evidence has shown that MAPK signaling pathway is involved in the pathogenesis and development of ischemic stroke. However, the upstream kinase and downstream kinase of MAPK signaling pathway are complex and the influencing factors are numerous, the exact role of MAPK signaling pathway in the pathogenesis of ischemic stroke has not been fully elucidated. MAPK signaling molecules in different cell types in the brain respond variously after stroke injury, therefore, the present review article is committed to summarizing the pathological process of different cell types participating in stroke, discussed the mechanism of MAPK participating in stroke. We further elucidated that MAPK signaling pathway molecules can be used as therapeutic targets for stroke, thus promoting the prevention and treatment of stroke.

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