1.Neuroprotective Mechanism of Yifei Xuanfei Jiangzhuo Prescription on VaD Rats Based on NF-κB/NLRP3 Signaling Pathway
Bingmao YUAN ; Wei CHEN ; Xiu LAN ; Lingfei JIANG ; Lin WU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):88-96
ObjectiveTo investigate the molecular mechanism by which Yifei Xuanfei Jiangzhuo prescription regulates the nuclear factor-κB (NF-κB)/NOD-like receptor protein 3 (NLRP3) signaling pathway to improve neuronal function in vascular dementia (VaD) rats. MethodsA VaD model was established by intermittently clamping the bilateral common carotid arteries (CCA) combined with bilateral vascular occlusion (2-VO). Eighty-four SD rats were randomly divided into a blank group, sham group, model group, piracetam group (0.2 g·kg-1), and low-, medium-, and high-dose Yifei Xuanfei Jiangzhuo prescription groups (6.09, 12.18, and 24.36 g·kg-1). Drug administration began on day 7 after surgery, once daily for 28 consecutive days. Behavioral experiments were used to evaluate learning and spatial memory. Hematoxylin-eosin (HE) staining was applied to observe pathological morphological changes in the CA1 region of the hippocampus. Transmission electron microscopy was used to examine the ultrastructure of hippocampal neurons. Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) was used to detect neuronal apoptosis in the CA1 region. Immunohistochemistry was performed to determine the positive expression rate of neuronal nuclear antigen (NeuN). Immunofluorescence single staining was used to assess nuclear expression of NF-κB p65 in brain tissue. Western blot was used to detect the protein expression levels of inhibitor of κB kinase (IKK), NF-κB p65, NLRP3, Caspase-1, apoptosis-associated speck-like protein (ASC), and interleukin-1β (IL-1β). ResultsCompared with the blank group, the model group showed a significant reduction in platform-crossing frequency (P0.01), aggravated hippocampal injury, a significant increase in neuronal apoptosis (P0.05), decreased NeuN positivity in the CA1 region (P0.05), increased nuclear expression of NF-κB p65 (P0.05), and significantly elevated expression of p-IKK, p-NF-κB p65, NLRP3, cleaved Caspase-1, ASC, and cleaved IL-1β (P0.05). Compared with the model group, all drug-treated groups improved learning and spatial memory in VaD rats, alleviated hippocampal pathological injury and neuronal apoptosis, and protected neuronal ultrastructure. Yifei Xuanfei Jiangzhuo prescription at doses of 12.18 and 24.36 g·kg-1 reduced hippocampal expression levels of p-IKK, p-NF-κB p65, NLRP3, Caspase-1, ASC, and cleaved IL-1β in VaD rats (P0.05), showing dose-dependent inhibition of the NF-κB/NLRP3 signaling pathway. ConclusionYifei Xuanfei Jiangzhuo prescription may exert neuroprotective effects by regulating the NF-κB/NLRP3 signaling pathway, thereby reducing neuroinflammation and inhibiting hippocampal neuronal apoptosis.
2.Neuroprotective Mechanism of Yifei Xuanfei Jiangzhuo Prescription on VaD Rats Based on NF-κB/NLRP3 Signaling Pathway
Bingmao YUAN ; Wei CHEN ; Xiu LAN ; Lingfei JIANG ; Lin WU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):88-96
ObjectiveTo investigate the molecular mechanism by which Yifei Xuanfei Jiangzhuo prescription regulates the nuclear factor-κB (NF-κB)/NOD-like receptor protein 3 (NLRP3) signaling pathway to improve neuronal function in vascular dementia (VaD) rats. MethodsA VaD model was established by intermittently clamping the bilateral common carotid arteries (CCA) combined with bilateral vascular occlusion (2-VO). Eighty-four SD rats were randomly divided into a blank group, sham group, model group, piracetam group (0.2 g·kg-1), and low-, medium-, and high-dose Yifei Xuanfei Jiangzhuo prescription groups (6.09, 12.18, and 24.36 g·kg-1). Drug administration began on day 7 after surgery, once daily for 28 consecutive days. Behavioral experiments were used to evaluate learning and spatial memory. Hematoxylin-eosin (HE) staining was applied to observe pathological morphological changes in the CA1 region of the hippocampus. Transmission electron microscopy was used to examine the ultrastructure of hippocampal neurons. Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) was used to detect neuronal apoptosis in the CA1 region. Immunohistochemistry was performed to determine the positive expression rate of neuronal nuclear antigen (NeuN). Immunofluorescence single staining was used to assess nuclear expression of NF-κB p65 in brain tissue. Western blot was used to detect the protein expression levels of inhibitor of κB kinase (IKK), NF-κB p65, NLRP3, Caspase-1, apoptosis-associated speck-like protein (ASC), and interleukin-1β (IL-1β). ResultsCompared with the blank group, the model group showed a significant reduction in platform-crossing frequency (P0.01), aggravated hippocampal injury, a significant increase in neuronal apoptosis (P0.05), decreased NeuN positivity in the CA1 region (P0.05), increased nuclear expression of NF-κB p65 (P0.05), and significantly elevated expression of p-IKK, p-NF-κB p65, NLRP3, cleaved Caspase-1, ASC, and cleaved IL-1β (P0.05). Compared with the model group, all drug-treated groups improved learning and spatial memory in VaD rats, alleviated hippocampal pathological injury and neuronal apoptosis, and protected neuronal ultrastructure. Yifei Xuanfei Jiangzhuo prescription at doses of 12.18 and 24.36 g·kg-1 reduced hippocampal expression levels of p-IKK, p-NF-κB p65, NLRP3, Caspase-1, ASC, and cleaved IL-1β in VaD rats (P0.05), showing dose-dependent inhibition of the NF-κB/NLRP3 signaling pathway. ConclusionYifei Xuanfei Jiangzhuo prescription may exert neuroprotective effects by regulating the NF-κB/NLRP3 signaling pathway, thereby reducing neuroinflammation and inhibiting hippocampal neuronal apoptosis.
3.Analysis of the management status and project undertaking of drug clinical trial institutions in Jiangxi Province after the implementation of the filing system
Min JIANG ; Li LIN ; Chenxi GAN ; Wenxiong SUN ; Qingsong XU ; Xiuli ZHAO
China Pharmacy 2025;36(3):275-279
OBJECTIVE To investigate and analyze the current management of drug clinical trial institutions in Jiangxi Province and the situation of undertaking drug clinical trials after the implementation of the filing system. METHODS A survey was conducted on 38 new institutions (obtained qualifications during the implementation of the filing system) and old institutions (obtained qualifications during the implementation of the recognition system) that had completed drug clinical trial institution qualification filing for more than one year in Jiangxi Province. The survey focused on the basic information of the institutions, the number of registered principal investigator (PI), institutional hardware and information construction, personnel allocation and training, and drug registration clinical trials undertaken by the institutions. RESULTS Of 38 institutions surveyed, there were 22 general hospitals and 16 specialized hospitals; there were 24 old institutions and 14 new institutions. Whether in general hospitals or specialized hospitals, the old institutions were better than the new institutions in the number of approved beds, the number of outpatients, the number of inpatients, the number of specialties, and the number of PI; both old and new institutions had separate offices; all new institutions were set up with GCP pharmacy. The adoption of clinical trial management system in new institutions is significantly less than in old institutions. In the general hospital, both the number of full-time managers and the number of quality controllers in old institutions were significantly more than in the new institutions, while the opposite was true at the level of specialized hospitals. In terms of centralized training on GCP, new institutions were all better than the old ones. Whether in general hospitals or specialized hospitals, the number of drug registration clinical trial projects undertaken by new institutions was significantly less than that of old ones. CONCLUSIONS The new institutions are worse than the old institutions in comprehensive strength and information construction of hospitals, and the number of clinical trials undertaken by new institutions is also less than old institutions.
4.Incidence characteristics of five major malignant tumors in Nanning City
ZHAO Lin ; JIANG Longyan ; XU Bin ; TANG Xianyan
Journal of Preventive Medicine 2025;37(2):135-138
Objective:
To investigate the incidence and trends of liver, lung, breast, colorectal and gastric cancers in Nanning City from 2018 to 2022.
Methods:
Data of new cases of liver, lung, breast, colorectal and gastric cancers in Nanning City from 2018 to 2022 were collected through the big data platform of the Nanning Health Propaganda and Information Center's Hospitalization System. The incidence rates were calculated and standardized using the data of the seventh national population census in 2020. The age, gender, and urban-rural distribution of the five malignant tumor cases were descriptively analyzed. The trends in incidence of the five malignant tumors were analyzed using annual percent change (APC).
Results:
From 2018 to 2022, the crude and standardized incidence rates of liver cancer in Nanning City were 24.46/105 and 26.39/105, respectively, showing upward trends (APC=15.122% and 13.111%, both P<0.05). The crude and standardized incidence rates of lung cancer were 23.42/105 and 25.83/105, respectively, showing upward trends (APC=13.714% and 10.056%, both P<0.05). The crude and standardized incidence rates of breast cancer were 19.13/105 and 20.29/105, respectively, with no significant trends (APC=-5.129% and -5.164%, both P>0.05). The crude incidence rate of colorectal cancer was 18.81/105, showing an upward trend (APC=8.164%, P<0.05), while the standardized incidence rate was 20.64/105, with no significant trend (APC=5.044%, P>0.05). The crude incidence rate of gastric cancer was 7.27/105, showing an upward trend (APC=5.984%, P<0.05), while the standardized incidence rate was 7.98/105, with no significant trend (APC=3.304%, P>0.05). The age of onset peak for liver cancer was 65 to <70 years, for lung cancer was 75 to <80 years, for breast cancer was 55 to <60 years, for colorectal cancer was 80 to <85 years, and for gastric cancer was 75 to <80 years. The standardized incidence rates of liver, lung, colorectal and gastric cancers were higher in males than in females (all P<0.05). The standardized incidence rates of liver, lung and gastric cancers were higher in rural areas than in urban areas, while the standardized incidence rates of breast and colorectal cancers were lower in rural areas (all P<0.05).
Conclusions
The incidence rates of liver, lung, colorectal and gastric cancers in Nanning City showed upward trends from 2018 to 2022, while the incidence rate of breast cancer remained stable. The standardized incidence rates of liver, lung, colorectal and gastric cancers were higher in males, and the standardized incidences of liver, lung and gastric cancers were higher in rural areas.
5.Construction and Verification of Prediction Model of Qi Deficiency and Blood Stasis Syndrome in Chronic Heart Failure
Tong JIANG ; Xiaodan FAN ; Shijia WANG ; Fengxia LIN ; Zhicong ZENG ; Liangzhen YOU ; Hongcai SHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(6):154-163
ObjectiveTo construct and validate a clinical prediction model for Qi deficiency and blood stasis syndrome in chronic heart failure (CHF),aiming to assist clinical diagnosis and provide tools and methods for individualized treatment of CHF. MethodsThe clinical data of patients with chronic heart failure treated at Dongzhimen Hospital of Beijing University of Chinese Medicine from January 2022 to January 2024 were retrospectively collected. The patients were randomly divided into a training group and a validation group with a ratio of 7∶3. First, the least absolute shrinkage and selection operator (LASSO) regression analysis was used to preliminarily screen the predictive factors affecting the diagnosis of Qi deficiency and blood stasis syndrome in CHF. Subsequently, the Logistic regression method was applied to conduct a more in-depth and detailed analysis of these factors. Variables with P<0.05 in the results of the multi-factor Logistic regression were carefully selected and included. Based on the regression coefficients obtained from this analysis, a model was constructed, and a nomogram was accurately drawn. Using R software,the receiver operating characteristic (ROC) curve,calibration curve,and decision curve analysis (DCA) were precisely drawn. These analyses were used to comprehensively evaluate the model from three crucial aspects: discrimination,calibration,and clinical applicability. Additionally, the accuracy,specificity,sensitivity,positive predictive value,and negative predictive value of the model were meticulously calculated to conduct a more all-round and comprehensive assessment. ResultsIn total, 168 cases were successfully obtained in the training group, and 71 cases were included in the validation group. After a thorough comparison, it was found that there were no statistically significant differences in the baseline data between the two groups. After being rigorously screened by the LASSO-multivariate logistic regression method, dark red tongue,smoking history,cardiac troponin I,and N-terminal pro-B-type natriuretic peptide (NT-ProBNP) were identified as the influencing factors for diagnosing patients with the Qi deficiency and blood stasis syndrome in CHF. The constructed model demonstrated an area under the curve (AUC) of 0.812 in the training group and 0.719 in the validation group. The calibration curve showed that the predicted curve of the model was close to the actual observed curve. DCA indicated that the model could provide substantial clinical benefits for patients at the decision thresholds ranging from 0.2 to 0.9. ConclusionThe clinical prediction model for Qi deficiency and blood stasis syndrome in chronic heart failure constructed in this study shows good performance. It has certain application value in clinical practice, which may contribute to the improvement of the diagnosis and treatment of CHF patients with this syndrome.
6.Effect Analysis of Different Interventions to Improve Neuroinflammation in The Treatment of Alzheimer’s Disease
Jiang-Hui SHAN ; Chao-Yang CHU ; Shi-Yu CHEN ; Zhi-Cheng LIN ; Yu-Yu ZHOU ; Tian-Yuan FANG ; Chu-Xia ZHANG ; Biao XIAO ; Kai XIE ; Qing-Juan WANG ; Zhi-Tao LIU ; Li-Ping LI
Progress in Biochemistry and Biophysics 2025;52(2):310-333
Alzheimer’s disease (AD) is a central neurodegenerative disease characterized by progressive cognitive decline and memory impairment in clinical. Currently, there are no effective treatments for AD. In recent years, a variety of therapeutic approaches from different perspectives have been explored to treat AD. Although the drug therapies targeted at the clearance of amyloid β-protein (Aβ) had made a breakthrough in clinical trials, there were associated with adverse events. Neuroinflammation plays a crucial role in the onset and progression of AD. Continuous neuroinflammatory was considered to be the third major pathological feature of AD, which could promote the formation of extracellular amyloid plaques and intracellular neurofibrillary tangles. At the same time, these toxic substances could accelerate the development of neuroinflammation, form a vicious cycle, and exacerbate disease progression. Reducing neuroinflammation could break the feedback loop pattern between neuroinflammation, Aβ plaque deposition and Tau tangles, which might be an effective therapeutic strategy for treating AD. Traditional Chinese herbs such as Polygonum multiflorum and Curcuma were utilized in the treatment of AD due to their ability to mitigate neuroinflammation. Non-steroidal anti-inflammatory drugs such as ibuprofen and indomethacin had been shown to reduce the level of inflammasomes in the body, and taking these drugs was associated with a low incidence of AD. Biosynthetic nanomaterials loaded with oxytocin were demonstrated to have the capability to anti-inflammatory and penetrate the blood-brain barrier effectively, and they played an anti-inflammatory role via sustained-releasing oxytocin in the brain. Transplantation of mesenchymal stem cells could reduce neuroinflammation and inhibit the activation of microglia. The secretion of mesenchymal stem cells could not only improve neuroinflammation, but also exert a multi-target comprehensive therapeutic effect, making it potentially more suitable for the treatment of AD. Enhancing the level of TREM2 in microglial cells using gene editing technologies, or application of TREM2 antibodies such as Ab-T1, hT2AB could improve microglial cell function and reduce the level of neuroinflammation, which might be a potential treatment for AD. Probiotic therapy, fecal flora transplantation, antibiotic therapy, and dietary intervention could reshape the composition of the gut microbiota and alleviate neuroinflammation through the gut-brain axis. However, the drugs of sodium oligomannose remain controversial. Both exercise intervention and electromagnetic intervention had the potential to attenuate neuroinflammation, thereby delaying AD process. This article focuses on the role of drug therapy, gene therapy, stem cell therapy, gut microbiota therapy, exercise intervention, and brain stimulation in improving neuroinflammation in recent years, aiming to provide a novel insight for the treatment of AD by intervening neuroinflammation in the future.
7.Research progress on the anti-tumor effects of traditional Chinese medicine through intervention in the Nrf2/GPX4 signaling pathway
Jie HUANG ; Si LIN ; Chunjuan JIANG ; Ling WEI
China Pharmacy 2025;36(4):507-512
Nuclear factor-erythroid 2-related factor 2 (Nrf2)/glutathione peroxidase 4 (GPX4) signaling pathway plays a key role in the occurrence and development of tumors, and is involved in tumor cell proliferation, apoptosis, ferroptosis, invasion, migration, and drug resistance. Based on the Nrf2/GPX4 signaling pathway, this paper summarizes the research progress of the anti- tumor effects of traditional Chinese medicine. It is found that flavonoids (ginkgetin, luteolin, etc.), terpenoids (atractylenolide, cucurbitacin B, etc.), saponins (polyphyllin Ⅰ, polyphyllin Ⅶ), ester (brusatol) and other effective components, and traditional Chinese medicine extracts (total coumarins in Pileostegia tomentella and total flavonoids of Pterocarya hupehensis Skan), traditional Chinese medicine compounds (Fushao diqin fang, Xiaoai jiedu fang, etc.) can promote ferroptosis in tumor cells by inhibiting Nrf2/GPX4 signaling pathway and the expressions of its upstream and downstream factor proteins, as well as by increasing Fe2+ levels and lipid peroxidation, thereby exerting an antitumor effect.
8.Outcome Indicators in Randomized Controlled Trials of Traditional Chinese Medicine Intervention in Ulcerative Colitis
Yasheng DENG ; Lanfang MAO ; Jiang LIN ; Yanping FAN ; Wenyue LI ; Yonghui LIU ; Zhaobing NI ; Jinzhong YU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):245-251
To systematically review randomized controlled trials (RCTs) of traditional Chinese medicine (TCM) intervention in ulcerative colitis (UC), and analyze the characteristics of these studies and their outcome indicators, thereby providing references for the design of future RCTs of TCM intervention in UC and offering evidence supporting the clinical application of TCM in UC. A computerized search was conducted in the China National Knowledge Infrastructure (CNKI), Wanfang Data, VIP, SinoMed, PubMed, Cochrane Library, EMbase, and Web of Science databases for RCTs of TCM intervention in UC published from January 2021 to August 2024. The risk of bias was assessed, and outcome indicators were qualitatively analyzed. A total of 555 RCTs were included, with a sample size of 44 853 participants. The largest sample size was 218 cases, and the smallest was 28 cases, with most studies focusing on 60-100 participants. Of the 386 RCTs that explicitly reported TCM syndrome types, the top three were large intestine dampness-heat syndrome (31.05%), spleen and kidney yang deficiency syndrome (12.47%), and spleen deficiency with dampness syndrome (9.17%). The interventions, ranked by frequency of use, included internal Chinese medicine compounds/preparations (64.5%), Chinese medicine compounds/preparations with retained enema (18.2%), internal Chinese medicine compounds/preparations + external TCM treatment (5.95%), and external TCM treatment alone (4.86%). The treatment duration was mainly 4-8 weeks (64.86%), with 61 studies (10.99%) reporting follow-up time. A total of 157 outcome indicators were used, with a frequency of 3 460 occurrences, classified into six domains: TCM syndromes and symptoms (346 occurrences, 10%), symptoms/signs (541 occurrences, 15.64%), physical and chemical examinations (2 119 occurrences, 61.24%), quality of life (107 occurrences, 3.09%), long-term prognosis (61 occurrences, 1.76%), and safety events (284 occurrences, 8.21%). The analysis reveals several limitations in the outcome indicators of TCM intervention in UC, including the lack of a basis for sample size calculation, non-standardized TCM syndrome classification, absence of trial design and registration, inadequate blinding and allocation concealment, adherence issues with interventions, imbalanced selection of surrogate and endpoint indicators, inconsistency in the timing of outcome measurements, design issues that require standardization, and ethical and safety concerns. It is recommended that future studies actively construct a set of core indicators for UC that include standardized TCM syndrome classification, clear efficacy evaluation indicators, key endpoint indicators, and reasonable measurement time points. Long-term prognostic impacts, comprehensive assessments of patients' quality of life, and consideration of economic benefits should be emphasized, providing a basis for the clinical practice of TCM in the treatment of UC.
9.Outcome Indicators in Randomized Controlled Trials of Traditional Chinese Medicine Intervention in Ulcerative Colitis
Yasheng DENG ; Lanfang MAO ; Jiang LIN ; Yanping FAN ; Wenyue LI ; Yonghui LIU ; Zhaobing NI ; Jinzhong YU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):245-251
To systematically review randomized controlled trials (RCTs) of traditional Chinese medicine (TCM) intervention in ulcerative colitis (UC), and analyze the characteristics of these studies and their outcome indicators, thereby providing references for the design of future RCTs of TCM intervention in UC and offering evidence supporting the clinical application of TCM in UC. A computerized search was conducted in the China National Knowledge Infrastructure (CNKI), Wanfang Data, VIP, SinoMed, PubMed, Cochrane Library, EMbase, and Web of Science databases for RCTs of TCM intervention in UC published from January 2021 to August 2024. The risk of bias was assessed, and outcome indicators were qualitatively analyzed. A total of 555 RCTs were included, with a sample size of 44 853 participants. The largest sample size was 218 cases, and the smallest was 28 cases, with most studies focusing on 60-100 participants. Of the 386 RCTs that explicitly reported TCM syndrome types, the top three were large intestine dampness-heat syndrome (31.05%), spleen and kidney yang deficiency syndrome (12.47%), and spleen deficiency with dampness syndrome (9.17%). The interventions, ranked by frequency of use, included internal Chinese medicine compounds/preparations (64.5%), Chinese medicine compounds/preparations with retained enema (18.2%), internal Chinese medicine compounds/preparations + external TCM treatment (5.95%), and external TCM treatment alone (4.86%). The treatment duration was mainly 4-8 weeks (64.86%), with 61 studies (10.99%) reporting follow-up time. A total of 157 outcome indicators were used, with a frequency of 3 460 occurrences, classified into six domains: TCM syndromes and symptoms (346 occurrences, 10%), symptoms/signs (541 occurrences, 15.64%), physical and chemical examinations (2 119 occurrences, 61.24%), quality of life (107 occurrences, 3.09%), long-term prognosis (61 occurrences, 1.76%), and safety events (284 occurrences, 8.21%). The analysis reveals several limitations in the outcome indicators of TCM intervention in UC, including the lack of a basis for sample size calculation, non-standardized TCM syndrome classification, absence of trial design and registration, inadequate blinding and allocation concealment, adherence issues with interventions, imbalanced selection of surrogate and endpoint indicators, inconsistency in the timing of outcome measurements, design issues that require standardization, and ethical and safety concerns. It is recommended that future studies actively construct a set of core indicators for UC that include standardized TCM syndrome classification, clear efficacy evaluation indicators, key endpoint indicators, and reasonable measurement time points. Long-term prognostic impacts, comprehensive assessments of patients' quality of life, and consideration of economic benefits should be emphasized, providing a basis for the clinical practice of TCM in the treatment of UC.
10.Effect and mechanism of Erastin on ferroptosis of acute myeloid leukemia cells
Xiandong Jiang ; Yingying Huang ; Xiaoying Hong ; Xindi Lin ; Donghong Lin ; Liping Lin
Acta Universitatis Medicinalis Anhui 2025;60(1):15-21
Objective :
To explore the role of lysophosphatidylcholine acyltransferase 3(LPCAT3) in Erastin-induced ferroptosis of acute myeloid leukemia(AML) cells and its related molecular regulatory mechanisms.
Methods :
Tetrazolium salt(MTS) method was used to detect the sensitivity of different AML cells to the classic ferroptosis inducer Erastin, real time quantitative polymerase chain reaction(qPCR) was used to detect the basal expression level ofLPCAT3mRNA, and the correlation between them was analyzed. Lentivirus-mediatedLPCAT3overexpression AML cell lines(OE group) and negative control lines(NC group) were constructed. After Erastin intervention, MTS, flow cytometry, and micromethods were used to detect cell viability, lipid reactive oxygen species(ROS), and Malondialdehyde(MDA), respectively. qPCR and Western blot were used to detect unfolded protein response(UPR) classic pathway signaling molecules(PERK, ATF4, GRP78, etc.) expression levels. The above ferroptosis-related indicators were detected after combined intervention with the UPR inhibitor 4-phenylbutyric acid(4-PBA), and the regulatory relationship was analyzed.
Results :
Four different types of AML cells had different sensitivities to ferroptosis, among which K562 cells were relatively insensitive. The IC50of the four types of AML cells to Erastin was negatively correlated with the expression level ofLPCAT3(r=-0.919,P<0.001). After Erastin intervention, the cell viability of K562 cells in the OE group was significantly inhibited by Erastin compared with the NC group(P<0.001), and the levels of lipid ROS and MDA increased(P<0.001). The results of qPCR and Western blot showed that, compared with the NC group, the mRNA and protein expression of UPR classic pathway moleculesPERK,ATF4, andGRP78mRNA and protein increased in the OE group(P<0.01). After inhibiting the UPR pathway by 4-PBA, the viability of K562 cells decreased(P<0.01), and lipid ROS and MDA levels increased(P<0.01) compared with the uninhibited state.
Conclusion
Overexpression ofLPCAT3can promote ferroptosis in K562 cells, and this process is negatively regulated by the classical UPR pathway PERK/ATF.


Result Analysis
Print
Save
E-mail