1.Lipidomics Combined with Machine Learning for Screening Biomarkers of Early-Stage Lung Cancer in the Elderly
Qing WANG ; Yue HE ; Xu LIU ; Zifan LI ; Kezhong CHEN
Medical Journal of Peking Union Medical College Hospital 2026;17(3):652-662
Based on plasma lipidomics combined with machine learning approaches, this study aimed to screen molecular biomarkers for the diagnosis of early-stage lung cancer in elderly patients and to evaluate their diagnostic performance. This was a retrospective diagnostic study consisting of two parts. The first part involved molecular biomarker screening. Elderly patients with early-stage lung cancer (early lung cancer group), patients with benign pulmonary nodules (benign nodule group), and contemporaneous healthy individuals undergoing physical examinations (healthy control group) were enrolled from Peking University People's Hospital between November 2023 and November 2024. In addition, early-stage lung cancer patients and healthy controls meeting the inclusion criteria from a previous study of our research group were included as an independent validation cohort. Plasma samples were collected from all subjects, and untargeted lipidomics analysis was performed using high-performance liquid chromatography-mass spectrometry. Principal component analysis and orthogonal partial least squares discriminant analysis were used to evaluate metabolic differences between groups. L1-regularized support vector machine combined with incremental feature selection was employed to screen diagnostic biomarkers for early-stage lung cancer. Model performance was assessed using receiver operating characteristic curves, calibration curves, Brier scores, and decision curve analysis. The second part involved functional validation of the molecular biomarkers using the human lung adenocarcinoma cell line A549, with palmitoylcarnitine (CAR 16∶0) selected as a representative biomarker for functional validation via CCK-8 and cell scratch assays. A total of 36 patients in the early lung cancer group, 35 patients in the benign nodule group, and 41 healthy controls were enrolled, along with an independent validation cohort of 110 individuals (59 patients with early-stage lung cancer and 51 healthy controls). The principal component analysis results demonstrated that quality control samples were tightly aggregated at the centroid of all samples, reflecting robust instrument performance and dependable data quality.Orthogonal partial least squares discriminant analysis revealed significant metabolic differences between the early lung cancer group and the control group (benign nodule group + healthy control group) (R2X=0.406, R2Y=0.529, Q2Y=0.44). L1-regularized support vector machine identified five carnitine-related lipids-palmitoleoylcarnitine(CAR 16∶1), palmitoylcarnitine, The five plasma carnitine-related lipids screened based on untargeted lipidomics and machine learning may serve as potential molecular biomarkers for the diagnosis of early-stage lung cancer in elderly patients. The high-sensitivity characteristic of the model makes it particularly suitable for screening scenarios in early-stage lung cancer.
2.Regulating effect of non-coding RNAs in thyroid-associated ophthalmopathy
Chinese Journal of Experimental Ophthalmology 2025;43(7):675-680
Thyroid-associated ophthalmopathy (TAO) is related to environmental, genetic and immune factors, mainly involving the autoimmune response of the thyroid and extraocular muscles.However, its specific pathogenesis is unclear.Non-coding RNAs (ncRNAs), the transcription products of RNA, are mainly divided into long non-coding RNAs (lncRNAs), circular RNAs (circRNAs) and microRNAs (miRNAs).ncRNAs regulate molecular functions and biological processes in cells and the body at the transcription and pre-transcription levels.Recent studies have found that ncRNAs, especially miRNAs, play an important biological regulatory role in the pathogenesis of TAO.This article explains how miRNAs, such as miRNA-146a, miRNA-155, miRNA-21, etc., lncRNAs and circRNAs are involved in the pathogenesis of TAO, such as inflammation mediation, adipogenesis and fibrosis, and cell proliferation, in order to provide new ideas for future research on the pathogenesis of TAO and clarify the important inspiration and guiding significance of ncRNAs for the targeted intervention and early treatment of TAO.
3.The significance and advancements of circulating tumor DNA in the diagnosis and treatment of operable non-small cell lung cancer
Zifan LI ; Yue HE ; Kezhong CHEN
Chinese Journal of Surgery 2025;63(2):171-176
Non-small cell lung cancer, characterized by high incidence and mortality rates, significantly threatens human health. Precisely assessing patient prognosis and implementing adaptive treatment strategies have emerged as pivotal issues in contemporary thoracic oncology. Postoperative minimal residual disease (MRD) detection through liquid biopsy has demonstrated substantial potential. Circulating tumor DNA (ctDNA) enables real-time dynamic monitoring of tumor alterations. With advancements in ctDNA detection technologies, ctDNA has become a core method for MRD assessment. In the context of postoperative surveillance, ctDNA detection facilitates more accurate prognostic stratification and early prediction of tumor recurrence. Regarding therapeutic interventions, ctDNA detection can predict the efficacy of neoadjuvant and adjuvant therapies. In the future, further elucidating the value of assessing ctDNA status in predicting patient prognosis and guiding drug therapies will contribute to the advancement of precision medicine and adaptive treatments.
4.Regulating effect of non-coding RNAs in thyroid-associated ophthalmopathy
Chinese Journal of Experimental Ophthalmology 2025;43(7):675-680
Thyroid-associated ophthalmopathy (TAO) is related to environmental, genetic and immune factors, mainly involving the autoimmune response of the thyroid and extraocular muscles.However, its specific pathogenesis is unclear.Non-coding RNAs (ncRNAs), the transcription products of RNA, are mainly divided into long non-coding RNAs (lncRNAs), circular RNAs (circRNAs) and microRNAs (miRNAs).ncRNAs regulate molecular functions and biological processes in cells and the body at the transcription and pre-transcription levels.Recent studies have found that ncRNAs, especially miRNAs, play an important biological regulatory role in the pathogenesis of TAO.This article explains how miRNAs, such as miRNA-146a, miRNA-155, miRNA-21, etc., lncRNAs and circRNAs are involved in the pathogenesis of TAO, such as inflammation mediation, adipogenesis and fibrosis, and cell proliferation, in order to provide new ideas for future research on the pathogenesis of TAO and clarify the important inspiration and guiding significance of ncRNAs for the targeted intervention and early treatment of TAO.
5.The significance and advancements of circulating tumor DNA in the diagnosis and treatment of operable non-small cell lung cancer
Zifan LI ; Yue HE ; Kezhong CHEN
Chinese Journal of Surgery 2025;63(2):171-176
Non-small cell lung cancer, characterized by high incidence and mortality rates, significantly threatens human health. Precisely assessing patient prognosis and implementing adaptive treatment strategies have emerged as pivotal issues in contemporary thoracic oncology. Postoperative minimal residual disease (MRD) detection through liquid biopsy has demonstrated substantial potential. Circulating tumor DNA (ctDNA) enables real-time dynamic monitoring of tumor alterations. With advancements in ctDNA detection technologies, ctDNA has become a core method for MRD assessment. In the context of postoperative surveillance, ctDNA detection facilitates more accurate prognostic stratification and early prediction of tumor recurrence. Regarding therapeutic interventions, ctDNA detection can predict the efficacy of neoadjuvant and adjuvant therapies. In the future, further elucidating the value of assessing ctDNA status in predicting patient prognosis and guiding drug therapies will contribute to the advancement of precision medicine and adaptive treatments.
6.Expression and clinical significance of CCL17, CCL22, and CCR4 in newly diagnosed multiple myeloma
Zifan XIAO ; Shasha ZOU ; Chengfeng YI ; Yue ZHAO ; Liusong WU ; Yonghuai FENG
Chinese Journal of Hematology 2024;45(7):672-677
Objective:To study the expressions of C-C class chemokine 17 (CCL17), C-C class chemokine 22 (CCL22), and C-C chemokine receptor 4 (CCR4) in newly diagnosed multiple myeloma (NDMM) for analyzing their correlations with clinical features and to preliminarily explore their roles in the development of NDMM.Methods:The study included 40 patients with NDMM and 20 healthy volunteers from the Department of Hematology of the Affiliated Hospital of Zunyi Medical University from July 2020 to December 2022. Peripheral blood, bone marrow, and bone marrow biopsy tissue samples were collected from the two groups. The expression levels of CCL17, CCL22, and CCR4 in patients with NDMM were analyzed using real-time quantitative reverse transcriptase polymerase chain reaction (RQ-PCR), enzyme-linked immunosorbent assay (ELISA), and immunohistochemistry. The mRNA expression levels of CCL17, CCL22, and CCR4 in the bone marrow mononuclear cell (BMMNC) of patients with NDMM were analyzed to assess their correlations with clinical indicators.Results:The mRNA expression levels of CCL17, CCL22, and CCR4 in BMMNC were higher in patients with NDMM than in controls (all P<0.05). The protein expression levels of CCL17 and CCL22 in peripheral blood supernatants and bone marrow supernatants were higher in patients with NDMM than in controls (all P<0.05). The expression levels of CCL17, CCL22, and CCR4 in bone marrow biopsy tissues were higher in patients with NDMM than in controls (all P<0.05). The mRNA expression level of CCL17 was increased in NDMM patients with combined anemia, bone damage, renal damage, and M protein level ≥30 g/L (all P<0.05). The mRNA expression level of CCL22 was increased in NDMM patients with combined anemia, bone damage, and renal damage (all P<0.05). The mRNA expression level of CCR4 was increased in NDMM patients with combined anemia and renal damage (all P<0.05) . Conclusion:CCL17, CCL22, and CCR4 were highly expressed in clinical samples from patients with NDMM compared to those from controls, and they may be involved in the occurrence and development of NDMM.

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