1.Spatio-temporal clustering analysis of influenza in Jiaxing City
WANG Yuanhang ; FU Xiaofei ; QI Yunpeng ; LIU Yang ; ZHOU Wanling ; GUO Feifei
Journal of Preventive Medicine 2025;37(1):55-58
Objective:
To investigate the epidemiological and spatio-temporal characteristics of influenza in Jiaxing City, Zhejiang Province, so as to provide insights into perfecting the prevention and control strategies of influenza.
Methods:
Data of influenza in Jiaxing City from 2019 to 2023 were collected from the Chinese Disease Prevention and Control Information System. Population data of the same period were collected from the Zhejiang Health Information Network Reporting System. The epidemiological characteristics of influenza were analyzed using descriptive analysis. Vector map information was collected from the Open Street Map, and the spatio-temporal clustering characteristics of influenza were analyzed using spatial autocorrelation and spatio-temporal scanning.
Results:
A total of 181 501 cases of influenza were reported in Jiaxing City from 2019 to 2023, with an average annual reported incidence of 653.93/105. The majority of cases were aged 5 to <15 years (59 785 cases, 32.94%). The majority of the occupations were students (78 239 cases, 43.11%) and pre-school children (33 715 cases, 18.58%). The county (city, district) with the highest reported incidence was Haining City (1 451.70/105), and the town (street) with the highest reported incidence was Chang'an Town (1 932.78/105). Spatial autocorrelation analysis showed that the incidence of influenza in Jiaxing City from 2019 to 2023 had positive spatial correlations (all Moran's I>0, all P<0.05), with a high-high clustering in the southern region. Spatio-temporal scanning analysis showed that there was a spatio-temporal clustering of influenza in Jiaxing City from 2019 to 2023, with the southern region being the primary-type clustering area and the period between November and January of the following year being the clustering time.
Conclusion
There was a significant spatio-temporal clustering of influenza in Jiaxing City from 2019 to 2023, with winter being the peak season and the southern region being the primary area.
2.Epidemiological characteristics of pertussis in Jiaxing City from 2004 to 2023
LI Rui ; QI Yunpeng ; WANG Yuanhang ; ZHA Yiwei ; FU Xiaofei
Journal of Preventive Medicine 2025;37(2):139-142
Objective:
To investigate the epidemiological characteristics of pertussis in Jiaxing City from 2004 to 2023 and spatio-temporal clustering characteristics from 2022 to 2023, so as to provide insights into formulation of pertussis control measures.
Methods:
Data of pertussis cases in Jiaxing City from 2004 to 2023 were collected through the Infectious Disease Report Information System of Chinese Disease Prevention and Control Information System. The epidemiological characteristics of pertussis cases in Jiaxing City from 2004 to 2023 were descriptively analyzed, and the spatio-temporal clustering characteristics from 2022 to 2023 were analyzed using spatio-temporal scanning.
Results:
A total of 478 pertussis cases were reported in Jiaxing City from 2004 to 2023, with an average annual reported incidence of 0.53/105. The reported incidence showed an upward trend from 2004 to 2023 (P<0.05), with the highest in 2022 (3.17/105). Higher incidence of pertussis was reported in June to August (149 cases, 31.17%) and November to December (112 cases, 23.43%). There was no statistically significant difference in the reported incidence between males and females (0.56/105 vs. 0.50/105, P>0.05). The cases aged under one year accounted for the highest proportion, with 199 cases (41.63%). Haining City (0.68/105), Jiashan County (0.64/105) and Tongxiang City (0.60/105) ranked the top three in the reported incidence of pertussis. Spatio-temporal scanning analysis showed that from 2022 to 2023, the primary clustering area of pertussis was centered in Daqiao Town of Nanhu District, covering 27 towns (streets) in Nanhu District, Jiashan County, Xiuzhou District and Pinghu City, and the clustering time was from November to December, 2023.
Conclusions
The reported incidence of pertussis was at a low level in Jiaxing City, but showed an upward trend from 2004 to 2023. The incidence of pertussis was higher among infants under one year of age, peaked in June to August and November to December, and was concentrated in Nanhu District and its surrounding areas.
3.The distribution pattern of traditional Chinese medicine syndromes and influencing factors for primary liver cancer: An analysis of 415 cases
Zhiyao SHI ; Xiaofei FAN ; Yu GAO ; Shaojian REN ; Shiyu WU ; Xixing WANG
Journal of Clinical Hepatology 2025;41(1):84-91
ObjectiveTo investigate the influencing factors for traditional Chinese medicine (TCM) syndromes of primary liver cancer, and to provide a theoretical basis for the TCM syndrome differentiation and standardized treatment of liver cancer. MethodsTCM syndrome differentiation was performed for 415 patients who were admitted to Shanxi Institute of Traditional Chinese Medicine and were diagnosed with primary liver cancer based on pathological or clinical examinations from January 2019 to December 2023. The chi-square test was used for comparison of categorical data between groups, and the unordered polytomous logistic regression model was used to investigate the influencing factors for TCM syndromes of liver cancer. ResultsThe common initial symptoms of the 415 patients with primary liver cancer included pain in the liver area (31.81%), abdominal distension (25.30%), abdominal pain (15.18%), and weakness (13.98%), and the main clinical symptoms included poor appetite (70.84%), fatigue (69.16%), pain in the liver area (67.47%), poor sleep (59.04%), abdominal distension (53.01%), and constipation (52.53%). There were significant differences in TCM syndromes between patients with different sexes, courses of the disease, clinical stages, Child-Pugh classes, presence or absence of intrahepatic and extrahepatic metastasis, and presence or absence of transcatheter arterial chemoembolization (TACE) and radiofrequency ablation (all P<0.05). The logistic regression analysis showed that male sex was a risk factor for damp-heat accumulation (odds ratio [OR]=2.036, P=0.048) and the syndrome of spleen-kidney Yang deficiency (OR=5.240, P<0.001); a course of disease of<1 year was a risk factor for damp-heat accumulation (OR=2.837, P=0.004) and syndrome of Qi stagnation and blood stasis (OR=2.317, P=0.021), but it was a protective factor against syndrome of spleen-kidney Yang deficiency (OR=0.385, P=0.005); Child-Pugh class A/B was a protective factor against liver-kidney Yin deficiency (OR=0.079, P<0.001); intrahepatic metastasis was a risk factor for liver-kidney Yin deficiency (OR=5.117, P=0.003) and syndrome of spleen-kidney Yang deficiency (OR=3.303, P=0.010); TACE was a protective factor against liver-kidney Yin deficiency (OR=0.171, P<0.001) and syndrome of spleen-kidney Yang deficiency (OR=0.138, P<0.001); radiofrequency ablation was a risk factor for damp-heat accumulation (OR=4.408, P<0.001) and liver-kidney Yin deficiency (OR=32.036, P<0.001). ConclusionSex, course of disease, Child-Pugh class, intrahepatic metastasis, TACE, and radiofrequency ablation are the main influencing factors for TCM syndromes of liver cancer.
4.Treatment Approach for Diabetes with Coronary Heart Disease Based on the Heart-Spleen-Kidney Triad Holistic Perspective
Xitong SUN ; Xinbiao FAN ; Huan ZHOU ; Xiaofei GENG ; Aolin LI ; Wenyu SHANG ; Junping ZHANG
Journal of Traditional Chinese Medicine 2025;66(7):750-754
It is believed that diabetes complicated with coronary heart disease is closely related to the functional interplay of the heart, spleen, and kidneys. This paper proposed the concept of the heart-spleen-kidney as a unified system for understanding and treating the disease. At the early stage, spleen and kidney deficiency leads to the internal accumulation of phlegm, dampness, and turbid lipids, causing impaired blood circulation and vascular obstruction, so treatment should focus on tonify the kidneys and strengthening the spleen, activating blood circulation and resolving stasis, using the self-prescribed Tangxin Maiwen Formula (糖心脉温方). As the disease progresses, further decline of spleen and kidney function results in inadequate nourishment of the heart, leading to blood stasis and the accumulation of phlegm, dampness, and turbid lipids, which may transform into pathogenic heat and toxins, causing heart damage, then treatment should emphasize on boosting qi and nourishing yin, clearing heat, activating blood and resolving toxins, using the self-prescribed Tangxin Maiqing Formula (糖心脉清方). In advanced stages, three zang organs, the heart, spleen, and kidneys, become severely impaired, leading to mental activity fail to be nourished and abnormal cognitive functions, so treatment should focus on harmonizing the three zang organs simultaneously, using the self-prescribed Yunpi Tiaoxin Decoction (运脾调心汤). This approach aims to provide a clinical framework for the diagnosis and treatment of diabetes with coronary heart disease.
5.Differentiation and Treatment of Non-Obstructive Hypertrophic Cardiomyopathy Based on the Concept of Nourishing the Heart and Softening the Hardness
Xiaofei GENG ; Xinbiao FAN ; Xitong SUN ; Wenyu SHANG ; Wenxiu LI ; Chi ZHANG ; Junping ZHANG
Journal of Traditional Chinese Medicine 2025;66(8):846-850
This article summarized clinical experience in differentiating and treating non-obstructive hypertrophic cardiomyopathy (HCM) based on the concept of nourishing the heart and softening the hardness. It is considered that HCM belongs to the category of "heart accumulation", with the fundamental cause being depletion of the spleen and kidney, and phlegm-stasis accumulation, as well as qi-yin exhaustion, serving as the manifestations. Spleen and kidney depletion leads to the transformation of phlegm and stasis, which accumulate in the heart; over time, this phlegm-stasis accumulation consumes heart qi and yin, resulting in the heart being deprived of nourishment, which eventually leads to the damage to both the function and structure of heart. Therefore, the method of nourishing the heart and softening the hardness is proposed for the treatment of non-obstructive HCM. Emphasis is placed on softening hardness and dissipating masses throughout the entire treatment process, often using Modified Siwei Ruanjian Formula (四味软坚方加减). During periods with prominent symptoms, the main treatment is boosting qi and nourishing yin to soften hardness and dissipate masses with self-made Yuxin Ruanjian Formula (自拟育心软坚方) in modifications; in stable periods, the main treatment is boosting kidney and fortifying spleen to soften hardness and dissipate masses with self-made Pishen Tongzhi Formula (脾肾同治方) in modifications.
6.Effect of pegylated interferon-α-2b therapy on cytotoxicity of virus-specific CD8+ T cells in HBeAg-negative patients with chronic hepatitis B virus infection
Lei QIN ; Guangpeng LI ; Peijun SHEN ; Lanfang ZHANG ; Xiaofei YANG ; Meijuan PENG ; Ye ZHANG
Journal of Clinical Hepatology 2025;41(4):628-636
ObjectiveTo investigate the change in the activity of hepatitis B virus (HBV)-specific CD8+ T cells after pegylated interferon-α-2b (PEG-IFN-α-2b) therapy in HBeAg-negative patients with chronic HBV infection. MethodsA total of 53 HBeAg-negative patients with chronic HBV infection who attended The First Affiliated Hospital of Xinxiang Medical University and Tangdu Hospital of Air Force Mdical University from April 2020 to June 2022 were enrolled and treated with PEG-IFN-α-2b (180 μg/week, subcutaneous injection) antiviral therapy. The study endpoint was HBsAg clearance (course of treatment<48 weeks) or 48 weeks (course of treatment≥48 weeks). Peripheral blood mononuclear cells were isolated at baseline and study endpoint, and peripheral blood T cell counts were measured. Enzyme-linked immunospot assay was used to measure the frequency of HBV-specific CD8+ T cells secreting perforin, granzyme B, and interferon-γ. A total of 17 HLA-A*02-restricted patients were selected, and CD8+ T cells were purified to establish direct- and indirect-contact co-culture systems for HBV-specific CD8+ T cells and HepG2.2.15 cells. The level of lactate dehydrogenase in supernatant was measured to calculate the mortality rate of HepG2.2.15 cells, and the levels of HBV DNA, cytotoxic molecules, and cytokines in supernatant were also measured. Flow cytometry was used to measure the expression of apoptosis ligands, and the cytotoxicity of HBV-specific CD8+ T cells was evaluated. The independent samples t-test or the paired t-test was used for comparison of normally distributed continuous data between two groups, and the Mann-Whitney U test or the Wilcoxon rank-sum test was used for comparison of non-normally distributed continuous data between two groups. ResultsThe HBsAg clearance rate at study endpoint was 30.19% (16/53). There were no significant differences in peripheral blood T cell counts (CD3+, CD4+, and CD8+ T cells) between baseline and study endpoint (P>0.05). At study endpoint, there was a significant increase in the frequency of HBV-specific CD8+ T cells secreting perforin, granzyme B, and interferon-γ (U=177.50, t=11.90, U=186.50, all P<0.001), and the patients with HBsAg clearance had a significantly higher frequency of such HBV-specific CD8+ T cells than those without HBsAg clearance (U=120.50, t=2.73, U=121.50, all P<0.01). In the direct- and indirect-contact co-culture systems at study endpoint, HBV-specific CD8+ T cells induced a significant reduction in HBV DNA in the supernatant of HepG2.2.15 cells (all P<0.001) and significant increases in the secretion of interferon-γ and tumor necrosis factor-α (all P<0.05); in the direct-contact co-culture system, HBV-specific CD8+ T cells induced significant increases in the mortality rate of HepG2.2.15 cells (13.62%±3.27% vs 11.39%±2.40%, t=2.27, P=0.030) and the secretion of perforin and granzyme B (t=72.50, U=52.50, both P<0.05). In the direct- and indirect-contact co-culture systems, compared with HBV-specific CD8+ T cells from the patients without HBsAg clearance, the HBV-specific CD8+ T cells from patients with HBsAg clearance had a significantly greater reduction in HBV DNA (P<0.05) and significant increases in the secretion of interferon-γ and tumor necrosis factor-α (P<0.05). ConclusionPEG-IFN-α-2b therapy can help to achieve a relatively high HBsAg clearance rate in HBeAg-negative patients with chronic HBV infection, and the activity of HBV-specific CD8+ T cells is significantly enhanced, which is closely associated with HBsAg clearance.
7.Application of utricle function testing in different clinical stages of Meniere’s disease
Yuanling LI ; Xiaofei LI ; Yongdong SONG ; Yafeng LÜ ; Yueling CHEN ; Daogong ZHANG
Chinese Journal of Clinical Medicine 2025;32(2):171-176
Objective To explore the role of ocular vestibular evoked myogenic potential (oVEMP) and unilateral centrifugation subjective visual vertical (UC-SVV) tests in evaluating the utricular function of patients with Meniere’s disease (MD) at different clinical stages. Methods A total of 97 unilateral MD patients at Shandong Provincial ENT Hospital from July 2019 to September 2021 were selected. All patients underwent oVEMP, UC-SVV, and pure tone audiometry tests. MD patients were classified into clinical stages 1, 2, 3, and 4, with stages 1 and 2 defined as early stage and stages 3 and 4 as late stage. The results of utricular function tests (abnormal rates of oVEMP, UC-SVV, and oVEMP+UC-SVV) were compared among patients at different stages. Spearman correlation analysis was used to evaluate the correlation between utricular function and clinical staging. Results Among the 97 MD patients, the abnormal rate of oVEMP was 66.0% (64/97), and the abnormal rate of UC-SVV was 55.7% (54/97). The abnormal rates of oVEMP and oVEMP+UC-SVV in early-stage patients were significantly lower than those in late-stage patients (P<0.05), while the difference in UC-SVV abnormal rates between the two groups was not statistically significant. Intra-group comparisons showed that the abnormal rate of oVEMP+UC-SVV in stage 1 patients was significantly lower than that in stage 2 patients (P<0.05), without significant difference in the other indices. There were no significant differences among the three indices in stages 3 and 4 patients. Spearman correlation test results indicated that the abnormal rate of oVEMP (r=0.336, P=0.001) and the abnormal rate of oVEMP+UC-SVV (r=0.301, P=0.003) were weakly positively correlated with clinical staging, while there was no correlation between the abnormal rate of UC-SVV and clinical staging (r=0.022, P=0.832). Conclusions Both oVEMP and UC-SVV tests can assess utricular function in MD patients at different clinical stages. Their combination is helpful of early-stage (stages 1 and 2) MD diagnosis.
8.Exploring Molecular Mechanism of Gypenoside L against Ovarian Cancer Based on Ferroptosis Pathway Mediated by Mature-tRNA-Asp-GTC/ATF3-LPCAT3
Jingxuan ZHU ; Jiao ZHAO ; Qun WANG ; Xiaofei SUN ; Jiaxin WANG ; Hongda ZHANG ; Nan SONG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):107-117
ObjectiveTo investigate the role of mature-tRNA-Asp-GTC and pre-tRNA-Arg-TCT in the ferroptosis phenotype of ovarian cancer (OC) cells and the regulatory mechanism of gypenoside L (Gyp-L) on mature-tRNA-Asp-GTC and pre-tRNA-Arg-TCT in OC cells. MethodsThe proliferation of human ovarian adenocarcinoma OVCAR3 cells was detected by cell counting kit-8 (CCK-8) assay, and the half-maximal inhibitory concentration (IC50) values of cisplatin (DDP), Gyp-L, and DDP in the presence of Gyp-L were calculated to determine the intervention concentration for subsequent experiments. Cell cloning assay and scratch assay reflected the proliferation and migration ability of OVCAR3 cells. PANDORA-seq small RNA sequencing was used to detect the differentially expressed transfer RNA-derived small RNAs (tsRNAs) in the cells after Gyp-L intervention, and the corresponding target genes of the tsRNAs were found by the RNAhybrid software. Malondialdehyde (MDA), glutathione (GSH), and lipid peroxide (LPO) levels were measured by colorimetry or enzyme linked immunosorbent assay (ELISA) method, Fe2+ content by FerroOrange fluorescent probe, and reactive oxygen species (ROS) content by DCFH-DA fluorescent probe to reflect the occurrence of ferroptosis in OVCAR3 cells. OVCAR3 cells were divided into a control group, a 50 µmol·L-1 Gyp-L group, and a 100 µmol·L-1 Gyp-L group. Quantitative real-time polymerase chain reaction (PCR) was performed to detect the expression of mature-tRNA-Asp-GTC, mature-tRNA-Leu-CAA, mature-mt_tRNA-Tyr-GTA_5_end, mature-tRNA-Val-CAC, mature-mt_tRNA-Glu-TTC, pre-tRNA-Arg-TCT, mature-tRNA-Asn-GTT, hydroxymethylbilane synthase (HMBS), Wnt, β-catenin, glutathione peroxidase 4 (GPX4), Kelch-like ECH-associated protein 1 (KEAP1), nuclear factor erythroid 2-related factor 2 (Nrf2), activating transcription factor 3 (ATF3), cystine/glutamate antiporter xCT, lysophosphatidylcholine acyltransferase 3 (LPCAT3), and arachidonate 15-lipoxygenase (ALOX15). Western blot was performed to detect the expression of HMBS, Wnt, β-catenin, GPX4, KEAP1, Nrf2, ATF3, xCT, LPCAT3, and ALOX15 proteins. ResultsThe 50 µmol·L-1 Gyp-L, 100 µmol·L-1 Gyp-L, DDP, 50 µmol·L-1 Gyp-L+DDP, and 100 µmol·L-1 Gyp-L+DDP groups showed significantly inhibited proliferation and migration of OVCAR3 cells (P<0.05) and exacerbated cell ferroptosis as reflected by the increase in the content of ROS, MDA, LPO, and Fe2+, as well as a decrease in the content of GSH (P<0.05). Compared with the control group, Gyp-L effectively interfered with the expression of 25 tsRNAs in OVCAR3 cells (P<0.05, |log2Fc|>1). Pre-tRNA-Arg-TCT/HMBS/Wnt/β-catenin/GPX4, pre-tRNA-Arg-TCT/KEAP1/NRF2/xCT, mature-tRNA-Asp-GTC/ATF3/KEAP1/NRF2/xCT, and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 axial expression was significantly aberrant after Gyp-L intervention (P<0.05). ConclusionThe pre-tRNA-Arg-TCT/HMBS/Wnt/β-catenin/GPX4, pre-tRNA-Arg-TCT/KEAP1/Nrf2/xCT, mature-tRNA-Asp-GTC/ATF3/KEAP1/Nrf2/xCT, and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 signaling pathways are involved in OC development. Gyp-L inhibits OC development by activating OVCAR3 cell ferroptosis onset mainly through the mature-tRNA-Asp-GTC/ATF3/KEAP1/Nrf2/xCT and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 signaling axes.
9.Molecular Mechanism of Treating Different Diseases with Same Treatment of Gypenoside L Affecting Oxidative Damage HUVEC and OVCAR-3 Through EGFR/STAT3/Glycolytic Pathway
Ying YANG ; Jiao ZHAO ; Xiaofei SUN ; Jiaxin WANG ; Peng CUI ; Nan SONG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):125-134
ObjectiveWith the epidermal growth factor receptor(EGFR)/Signal Transducers and Activators of Transcription(STAT3)/Hexokinase 2(HK2) signaling pathway in atherosclerosis (AS) and ovarian cancer (OC) as the entry point, this paper discusses the molecular mechanism of Gypenoside L (Gyp-L) treating AS and OC with different diseases, provides a new perspective and theoretical basis for TCM treating AS and OC with EGFR-STAT3-HK2 pathway, and enriches the scientific connotation of the theory of "cytoskeleton in the heart". MethodsCCK-8 was used to detect the proliferation of HUVEC and OVCAR-3 cells, in order to determine the intervention concentration for subsequent experiments. The colorimetric method was used to detect the NO content in HUVEC and the contents of pyruvate and LDH in two cell lines. Cell cloning experiments and scratch experiments reflect the proliferation and migration ability of OVCAR-3 cells. Western blot was used to detect the expression levels of relevant proteins. Furthermore, two cell models overexpressing EGFR were constructed and co treated with Gyp-L. HUVEC cells were divided into control, ox-LDL, OE-NC, OE-EGFR, OE-NC+Gyp-L, and OE-EGFR+Gyp-L group. OVCAR-3 cells were divided into control, OE-NC, OE-EGFR , OE-NC+Gyp-L, and OE-EGFR+Gyp-L group. The colorimetric method was used to detect the NO content in HUVEC and the contents of pyruvate and LDH in two cell lines. Western blot was used to detect the expression levels of EGFR-STAT3-HK2 pathway related proteins. Cell cloning experiments and scratch experiments reflect the proliferation and migration ability of OVCAR-3 cells. ResultsGyp-L can significantly reduce the NO content of HUVEC and the pyruvate and LDH content of two cell lines (P<0.05); Inhibit the proliferation and migration ability of OVCAR-3 cells; Reduce the expression levels of EGFR/STAT3/HK2 pathway related proteins in HUVEC and OVCAR-3 cell lines (P<0.05), and inhibit the glycolysis pathway. ConclusionGyp-L can inhibit glycolysis in HUVEC and OVCAR-3 cells through the EGFR/STAT3/HK2 pathway,thereby suppressing the occurrence and development of AS and OC.
10.Exploring Molecular Mechanism of Gypenoside L against Ovarian Cancer Based on Ferroptosis Pathway Mediated by Mature-tRNA-Asp-GTC/ATF3-LPCAT3
Jingxuan ZHU ; Jiao ZHAO ; Qun WANG ; Xiaofei SUN ; Jiaxin WANG ; Hongda ZHANG ; Nan SONG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):107-117
ObjectiveTo investigate the role of mature-tRNA-Asp-GTC and pre-tRNA-Arg-TCT in the ferroptosis phenotype of ovarian cancer (OC) cells and the regulatory mechanism of gypenoside L (Gyp-L) on mature-tRNA-Asp-GTC and pre-tRNA-Arg-TCT in OC cells. MethodsThe proliferation of human ovarian adenocarcinoma OVCAR3 cells was detected by cell counting kit-8 (CCK-8) assay, and the half-maximal inhibitory concentration (IC50) values of cisplatin (DDP), Gyp-L, and DDP in the presence of Gyp-L were calculated to determine the intervention concentration for subsequent experiments. Cell cloning assay and scratch assay reflected the proliferation and migration ability of OVCAR3 cells. PANDORA-seq small RNA sequencing was used to detect the differentially expressed transfer RNA-derived small RNAs (tsRNAs) in the cells after Gyp-L intervention, and the corresponding target genes of the tsRNAs were found by the RNAhybrid software. Malondialdehyde (MDA), glutathione (GSH), and lipid peroxide (LPO) levels were measured by colorimetry or enzyme linked immunosorbent assay (ELISA) method, Fe2+ content by FerroOrange fluorescent probe, and reactive oxygen species (ROS) content by DCFH-DA fluorescent probe to reflect the occurrence of ferroptosis in OVCAR3 cells. OVCAR3 cells were divided into a control group, a 50 µmol·L-1 Gyp-L group, and a 100 µmol·L-1 Gyp-L group. Quantitative real-time polymerase chain reaction (PCR) was performed to detect the expression of mature-tRNA-Asp-GTC, mature-tRNA-Leu-CAA, mature-mt_tRNA-Tyr-GTA_5_end, mature-tRNA-Val-CAC, mature-mt_tRNA-Glu-TTC, pre-tRNA-Arg-TCT, mature-tRNA-Asn-GTT, hydroxymethylbilane synthase (HMBS), Wnt, β-catenin, glutathione peroxidase 4 (GPX4), Kelch-like ECH-associated protein 1 (KEAP1), nuclear factor erythroid 2-related factor 2 (Nrf2), activating transcription factor 3 (ATF3), cystine/glutamate antiporter xCT, lysophosphatidylcholine acyltransferase 3 (LPCAT3), and arachidonate 15-lipoxygenase (ALOX15). Western blot was performed to detect the expression of HMBS, Wnt, β-catenin, GPX4, KEAP1, Nrf2, ATF3, xCT, LPCAT3, and ALOX15 proteins. ResultsThe 50 µmol·L-1 Gyp-L, 100 µmol·L-1 Gyp-L, DDP, 50 µmol·L-1 Gyp-L+DDP, and 100 µmol·L-1 Gyp-L+DDP groups showed significantly inhibited proliferation and migration of OVCAR3 cells (P<0.05) and exacerbated cell ferroptosis as reflected by the increase in the content of ROS, MDA, LPO, and Fe2+, as well as a decrease in the content of GSH (P<0.05). Compared with the control group, Gyp-L effectively interfered with the expression of 25 tsRNAs in OVCAR3 cells (P<0.05, |log2Fc|>1). Pre-tRNA-Arg-TCT/HMBS/Wnt/β-catenin/GPX4, pre-tRNA-Arg-TCT/KEAP1/NRF2/xCT, mature-tRNA-Asp-GTC/ATF3/KEAP1/NRF2/xCT, and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 axial expression was significantly aberrant after Gyp-L intervention (P<0.05). ConclusionThe pre-tRNA-Arg-TCT/HMBS/Wnt/β-catenin/GPX4, pre-tRNA-Arg-TCT/KEAP1/Nrf2/xCT, mature-tRNA-Asp-GTC/ATF3/KEAP1/Nrf2/xCT, and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 signaling pathways are involved in OC development. Gyp-L inhibits OC development by activating OVCAR3 cell ferroptosis onset mainly through the mature-tRNA-Asp-GTC/ATF3/KEAP1/Nrf2/xCT and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 signaling axes.


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