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Multi-Omics and Machine Learning-Based Profiling of Severity Signatures in Mycoplasma Pneumoniae Infection in Children

ABSTRACT: Mycoplasma pneumoniae pneumonia (MPP) is a common respiratory infection in children, yet the mechanisms driving its progression to severe disease remain poorly understood. This study employs a comprehensive proteomic and metabolomic approach to elucidate severity-related pathways and identify potential biomarkers for improved diagnosis and targeted therapy. By analyzing blood proteomes from 57 pediatric patients with varying MPP severities alongside 10 healthy controls, and integrating multi-omics data from bronchoalveolar lavage fluid (BALF)

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ORGANISM(S): Homo Sapiens (human)

SUBMITTER: xiulan lai

LAB HEAD: Xiulan Lai

PROVIDER: PXD063022 | Pride | 2025-12-12

REPOSITORIES: Pride

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Project description:Cis-9, trans-11-conjugated linoleic acid (c9, t11-CLA), a functional fatty acid, is one of the research hotspots in the fields of functional dairy products development because of its multiple beneficial effects in humans and animals. In milk, most c9, t11-CLA is de novo synthesized from trans-11-octadecenoic acid (TVA) and it is confirmed that genes such as stearoyl-coA desaturase 1 (SCD1) play a key role in the synthesis. However, few studies have been reported to deeply elucidate the SCD1-dependent molecular mechanism of cis9, trans11-CLA synthesis and its relationship with the pathways of energy metabolism and lipid metabolism. Therefore, in the present study, MAC-T cells were divided into three groups: CAY group (SCD1-inhibited MAC-T cell model with the addition of CAY, TVA), TVA group (only TVA), and Control group (without CAY, TVA). The relative mRNA expression of SCD1 was measured using real-time PCR, while TVA accumulation and c9, t11 -CLA synthesis were analyzed using gas chromatography (GC). The SCD1-related proteins were firstly screened in MAC-T cells by Tandem Mass Tag (TMT)-based quantitative proteomics analysis, then their functions were annotated by bioinformatic analysis, and finally their relationships with SCD1 were evaluated by parallel reaction monitoring (PRM) analysis and small RNA interference. The results showed that the deficiency of SCD1 led by CAY10566 blocked the synthesis of c9, t11-CLA in MAC-T cells. Sixty-one SCD1-associated proteins were screened and found to be mainly involved in the pathways of energy metabolism and lipid metabolism, such as glycolytic pathway, pentose phosphate pathway, fatty acid elongation pathway, and unsaturated fatty acid biosynthesis. Among these genes, 17 proteins were validated under the PRM analysis. PGAM1 (phosphoglycerate mutase 1), TPI1 (triosephosphate isomerase 1), LDHB (lactate dehydrogenase B), and ALDOA (aldolase, fructose-bisphosphate A) were verified to have a negative relationships with SCD1. This study furthered our understanding of the molecular mechanisms of c9, t11-CLA synthesis in the mammary glands of dairy cows.

			Action	DRS
	Results.zip	Other
	XB00885B1DA_CRF_BALF.raw	Raw
	XB00885B1DA_CX_BALF.raw	Raw
	XB00885B1DA_HMX_BALF.raw	Raw
	XB00885B1DA_HXL_BALF.raw	Raw

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Multi-Omics and Machine Learning-Based Profiling of Severity Signatures in Mycoplasma Pneumoniae Infection in Children

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