1.Effect of Ningying Formula (宁瘿方) Combined with Low-Dose Antithyroid Drugs on Reducing Relapse Risk for Patients with Graves' Hyperthyroidism in Remission Stage:A Retrospective Cohort Study
Yuqin HUANG ; Mingshuai ZHANG ; Shijian LIU ; Feng TAO ; Yi CHEN
Journal of Traditional Chinese Medicine 2026;67(1):45-52
ObjectiveTo evaluate the effect of Ningying Formula (宁瘿方) combined with low-dose antithyroid drugs (ATDs) on the relapse risk for patients with Graves' hyperthyroidism (GH) during the remission phase, and to analyze the related factors between GH relapse and thyrotropin receptor antibody (TRAb) negativity, so as to provide evidence for the standardized management of GH in remission stage. MethodsA single-center retrospective cohort study was conducted, including 269 GH patients in the remission stage. After propensity score matching (PSM), 102 matched pairs (204 patients) were established. The control group received low-dose ATDs as maintenance therapy, while the exposure group received the core Ningying Formula in addition to low-dose ATDs. The primary outcome was the GH recurrence rate; the secondary outcome was the thyrotropin receptor antibody (TRAb) negativity rate (TRAb<1.75 IU/L). Safety outcomes included treatment-related adverse events. Differences between groups were assessed using Cox regression models and Kaplan-Meier curves, with sensitivity analysis performed using inverse probability of treatment weighting (IPTW). ResultsThe median follow-up in the matched cohort was 28.07 months. Regarding the GH recurrence outcome, the recurrence rate in the exposure group (18/102, 17.6%) was significantly lower than that in the control group (31/102, 30.4%; χ²=4.539, P=0.033); regarding the TRAb negativity outcome, the TRAb negativity rate in the exposure group (50/102, 49.0%) was significantly higher than that in the control group (23/102, 22.5%; χ²=15.551, P<0.001). Multivariate Cox regression analysis for recurrence showed that Ningying Formula treatment reduced the risk of recurrence [HR=0.324, 95%CI(0.170, 0.617), P<0.001]. Male [HR=2.209, 95%CI(1.079, 4.520), P=0.030], higher initial TRAb level [per 1 IU/L increase: HR=1.033, 95%CI(1.003, 1.064), P=0.032], and larger thyroid volume [per 1 ml increase: HR=1.045, 95%CI(1.003, 1.088), P=0.035] were identified as independent risk factors for recurrence; multivariate Cox regression analysis for TRAb negativity indicated that Ningying Formula treatment promoted TRAb negativity [HR=1.826, 95%CI(1.091, 3.056), P=0.022], while a higher initial TRAb level was associated with a lower probability of negativity [HR=0.974, 95%CI(0.950, 0.998), P=0.032]. Survival analysis showed significant differences in relapse rate between groups (Log-Rank P=0.003) and in TRAb outcomes (Log-Rank P=0.034). The incidence of treatment-related adverse events was similar between groups (P=0.757). The IPTW sensitivity analysis was consistent with the primary analysis, indicating robust results. ConclusionThe Ningying Formula combined with low-dose ATDs can significantly reduce the risk of recurrence and can improve the TRAb negativity rate in GH patients during the remission stage, without increasing common adverse events, making it an optional strategy for reducing relapse risk during remission. Male gender, higher baseline TRAb level, and larger thyroid volume indicate a higher risk of recurrence, warranting focused follow-up and stratified management.
2.Mechanism Exploration of Doxorubicin and Sepsis Induced Myocardial Injury: Differences and Convergences
Tao ZHANG ; Zihan NAN ; Lixia LIU ; Jiaqi LIU ; Xiukai CHEN ; Xiaoting WANG ; Suwen SU
Medical Journal of Peking Union Medical College Hospital 2026;17(1):23-32
Doxorubicin (DOX)-induced cardiotoxicity and sepsis-induced myocardial injury (SIMI) represent significant clinical challenges in patients undergoing chemotherapy, sharing a common pathological basis of oxidative stress and mitochondrial dysfunction. Ferroptosis, an iron-dependent form of regulated cell death driven by lipid peroxidation, has recently been shown to play a critical role in DOX-induced cardiotoxicity and lipopolysaccharide (LPS)-induced SIMI. This article systematically reviews the mechanisms underlying myocardial injury caused by DOX and sepsis, identifying ferroptosis as a central common pathway. DOX triggers a burst of reactive oxygen species within mitochondria and inhibits glutathione peroxidase 4 (GPX4) activity through redox cycling of its quinone group and high-affinity accumulation in mitochondrial cardiolipin. LPS, by activating pattern recognition receptors and related inflammatory signaling pathways, provokes a cytokine storm and mitochondrial dysfunction. Both can disrupt the core regulatory axis of cysteine-glutathione (GSH)-GPX4, synergistically promoting ferroptosis in cardiomyocytes. Moreover, epigenetic regulation plays a key role in DOX- and LPS-induced cardiomyocyte ferroptosis and may serve as a promising therapeutic target. A deeper understanding of the ferroptosis mechanism and its epigenetic regulatory network in the synergistic injury induced by DOX and sepsis is of great importance for developing novel strategies to mitigate chemotherapy-related cardiotoxicity and improve outcomes in cancer patients with concurrent infections.
3.Research Tackling Paradigm and Technological Layout Strategies Based on Erectile Dysfunction, A Clinical Dominant Disease of Traditional Chinese Medicine
Qi ZHAO ; Yun CHEN ; Baoxing LIU ; Xuejun SHANG ; Fei SUN ; Xiaozhi ZHAO ; Zhigang WU ; Chao SUN ; Peihai ZHANG ; Wanjun CHENG ; Xing ZHOU ; Zhan QIN ; Yufeng PAN ; Weiwei TAO ; Jianhuai CHEN ; Mei MO ; Xiaoxiao ZHANG ; Xing ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(7):291-299
To thoroughly implement the strategic deployment outlined in the Opinions of the Central Committee of the Communist Party of China and the State Council on Promoting the Inheritance and Innovative Development of Traditional Chinese Medicine regarding research on dominant diseases of traditional Chinese medicine and to uphold the development philosophy of equal emphasis on traditional Chinese medicine and western medicine,the China Association of Chinese Medicine has fully played a leading academic role by systematically organizing and conducting a series of academic youth salons on clinical dominant diseases of traditional Chinese medicine. On September 13,2024,the 36th Youth Salon on Clinical Dominant Diseases was successfully held in Nanjing,focusing on the advantages of traditional Chinese medicine and the integrative traditional Chinese medicine and western medicine in the diagnosis and treatment of erectile dysfunction (ED). The conference brought together leading experts from traditional Chinese medicine,western medicine,and interdisciplinary fields,facilitating in-depth multidisciplinary discussions that led to key consensus on optimizing traditional Chinese medicine treatment protocols for ED,researching and developing new drugs of traditional Chinese medicine,and advancing interdisciplinary development in traditional Chinese medicine. This salon systematically sorted out the clinical strengths and distinctive features of traditional Chinese medicine in the diagnosis and treatment of ED. Based on current research foundations and clinical needs,it identified key directions for future scientific layout and scientific research tackling: (1) Standardization of syndrome differentiation system of traditional Chinese medicine for ED. (2) Optimization and standardization of intervention methods of integrated traditional Chinese medicine and western medicine. (3) High-quality clinical research guided by evidence-based medicine. (4) In-depth analysis of the pharmacological mechanisms of traditional Chinese medicine in the treatment of ED. (5) Clinical translation and application promotion of new drugs of traditional Chinese medicine. (6) Interdisciplinary integration and innovation in traditional Chinese medicine. For each research direction,key focus areas,expected objectives,and clinical value were further refined,along with the establishment of a scientifically sound priority funding level evaluation system. Therefore,building on the series of salons on the ED-focused dominant diseases of traditional Chinese medicine,this paper provides standardized guidance for clinical practice of traditional Chinese medicine in ED management,effectively contributing to the high-quality development of traditional Chinese medicine. It serves as a valuable reference for national scientific and technological strategic layout, research and development decision-making in new drugs of traditional Chinese medicine,research topic planning,and clinical guideline formulation.
4.Development trajectories of clustered health risk behaviors and their association with self esteem and loneliness among junior high school students
XU Tao, LIU Lü ; hao, CHEN Jiajia, WANG Yongsheng, ZHANG Tiancheng, YANG Xuejing
Chinese Journal of School Health 2026;47(2):189-193
Objective:
To analyze the developmental trajectories of clustered health risk behaviors and their association with self-esteem and lonelinesss among junior high school students, so as to provide a reference for formulating comprehensive prevention and control measures of health risk behaviors among adolescents.
Methods:
In October 2023, 1 165 first year junior high school students from two schools of Jishou City in Hunan Province were selected by convenient sampling method for three follow up surveys (T1:October 2023; T2:April 2024; T3:October 2024). The Adolescent Health Risk Behavior Questionnaire, Rosenberg Self esteem Scale and Loneliness Scale were used to assess health risk behaviors, self esteem and loneliness, respectively. Latent growth curve modeling and latent growth mixture modeling were applied to analyze the developmental trajectories of clustered health risk behaviors among junior high school students. Logistic regression was used to analyze the association of the developmental trajectories of clustered health risk behaviors with self esteem and loneliness among junior high school students.
Results:
The overall developmental trajectories among junior high school students showed a declining trend (intercept=0.15, slope=-1.65, both P <0.05), with three heterogeneous categories:low risk improvement group ( n =862, 74.0%), moderate risk stable group ( n =260, 22.3%), and high risk deterioration group ( n =43, 3.7%). After adjusting the status of the left behind individuals,using the low risk improvement group as the reference category in multinomial Logistic regression analysis, results indicated that higher loneliness scores among junior high school students increased the risks of belonging to the moderate risk stable group ( OR=1.02, 95%CI =1.00- 1.04 ) and the high risk deterioration group ( OR=1.04, 95%CI =1.00-1.08), while higher self esteem scores reduced the risks of belonging to the moderate risk stable group ( OR=0.93, 95%CI =0.91-0.96) and the high risk deterioration group ( OR=0.88, 95%CI =0.83-0.94) (all P <0.05).
Conclusions
The overall trend of clustered health risk behaviors among junior high school students gradually improves, and the self esteem and loneliness are significant correlative factors. Targeted intervention measures should be developed for the junior high school students, with a focus on enhancing their self esteem and alleviating loneliness.
5.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.
6.Clinical Characteristics and Influencing Factors of Rheumatoid Arthritis in Patients with Cold Dampness Obstruction Syndrome
Yanyu CHEN ; Yanqi LI ; Longxiao LIU ; Liubo ZHANG ; Tianyi LAN ; Nan ZHANG ; Cheng XIAO ; Yuan XU ; Qingwen TAO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(3):140-146
ObjectiveTo study the clinical characteristics and influencing factors of rheumatoid arthritis (RA) in the patients with cold dampness obstruction syndrome. MethodsThe RA patients treated in the Department of Traditional Chinese Medicine and Rheumatology of the China-Japan Friendship Hospital from August 2022 to June 2024 were selected. The demographic information, clinical data, laboratory test results, and traditional Chinese medicine (TCM) symptom information were collected for syndrome differentiation, on the basis of which the characteristics and influencing factors of cold dampness obstruction syndrome were analyzed. ResultsA total of 258 RA patients were selected in this study, including 88 (34.1%) patients with cold dampness obstruction syndrome, 53 (20.5%) patients with dampness and heat obstruction syndrome, 31 (12.0%) patients with wind dampness obstruction syndrome, 29 (11.2%) patients with liver-kidney deficiency syndrome, 19 (7.4%) patients with Qi-blood deficiency syndrome, 14 (5.4%) patients with phlegm-stasis obstruction syndrome, 15 (5.8%) patients with stasis obstructing collateral syndrome and 9 (3.5%) patients with Qi-Yin deficiency syndrome. The patients were assigned into two groups of cold dampness obstruction syndrome and other syndromes. The group of cold dampness obstruction syndrome had lower joint fever, 28-tender joint count (TJC28), and 28-joint disease activity score (DAS28)-C-reactive protein (CRP) and higher central sensitization, cold feeling of joints, fear of wind and cold, cold limbs, and abdominal distention than the group of other syndromes (P<0.05). The binary logistic regression analysis showed that central sensitization (OR 5.749, 95%CI 2.116-15.616, P<0.001) and DAS28-CRP (OR 0.600, 95% CI 0.418-0.862, P=0.006) were the independent factors influencing cold dampness obstruction syndrome in RA. ConclusionCold dampness obstruction syndrome is a common syndrome in RA patients. It is associated with central sensitization, cold feeling of joints, abdominal distension and may be a clinical syndrome associated with central sensitization.
7.Preliminary application of sacral neuromodulation in patients with benign prostatic hyperplasia complicated with underactive bladder after transurethral resection of the prostate
Ning LIU ; Yan ZHANG ; Tao LI ; Qiang HU ; Kai LU ; Lei ZHANG ; Jianping WU ; Shuqiu CHEN ; Bin XU ; Ming CHEN
Journal of Modern Urology 2025;30(1):39-42
[Objective] To evaluate the efficacy and safety of sacral neuromodulation (SNM) in the treatment of patients with benign prostatic hyperplasia (BPH) complicated with underactive bladder (UAB) who respond poorly to transurethral resection of the prostate (TURP). [Methods] A retrospective analysis was performed on 10 patients with BPH and UAB treated with TURP by the same surgeon in Zhongda Hospital Southeast University during Jan.2018 and Jan.2023.The residual urine volume was not significantly relieved after operation, and the maximum urine flow rate and urine volume per discharge were not significantly improved.All patients underwent phase I SNM, and urinary diaries were recorded before and after surgery to observe the average daily frequency of urination, volume per urination, maximum urine flow rate, and residual urine volume. [Results] The operation time was (97.6±11.2) min.During the postoperative test of 2-4 weeks, if the residual urine volume reduction by more than 50% was deemed as effective, SNM was effective in 6 patients (60.0%). Compared with preoperative results, the daily frequency of urination [(20.2±3.8) times vs. (13.2±3.2) times], volume per urination [(119.2±56.7) mL vs. (246.5±59.2) mL], maximum urine flow rate [(8.7±1.5) mL/s vs. (16.5±2.6) mL/s], and residual urine volume [(222.5±55.0) mL vs. (80.8±16.0) mL] were significantly improved, with statistical significance (P<0.05). There were no complications such as bleeding, infection, fever or pain.The 6 patients who had effective outcomes successfully completed phase II surgery, and the fistula was removed.During the follow-up of 1 year, the curative effect was stable, and there were no complications such as electrode displacement, incision infection, or pain in the irritation sites.The residual urine volume of the other 4 unsuccessful patients did not improve significantly, and the electrodes were removed and the vesicostomy tube was retained. [Conclusion] SNM is safe and effective in the treatment of BPH with UAB patients with poor curative effects after TURP.
8.Analysis of Coagulation Changes and Influencing Factors during Treatment of Acute Promyelocytic Leukemia.
Zhen-Zhu CHEN ; Tao LIU ; He-He GUO ; Wen-Wen REN ; Kai WANG ; Ying-Xu PANG
Journal of Experimental Hematology 2025;33(1):45-53
OBJECTIVE:
To analyze the changes in coagulation during the treatment of acute promyelocytic leukemia (APL) and explore the influencing factors of coagulation in patients with APL.
METHODS:
Data of 166 APL patients admitted to our hospital from November 2018 to May 2023 were retrospectively analyzed, and the changes of various clinical indicators before and during treatment were compared. 166 APL patients were divided into abnormal coagulation group (n =115) and normal coagulation group (n =51) according to whether they experienced coagulation dysfunction. The basic information, clinical data and laboratory indicators of the two groups were compared. Multivariate logistic regression analysis was used to screen risk factors for coagulation dysfunction and established logistic regression model. Then we developed a neural network model and ranked the importance of the influencing factors, and used receiver operating characteristic (ROC) curves to evaluate the predictive performance of the two models.
RESULTS:
The comparative results of various clinical indicators in 166 APL patients before and during treatment showed that systolic blood pressure (SBP), diastolic blood pressure (DBP), total cholesterol (TC), triacylglycerol (TG), low-density lipoprotein cholesterol (LDL-C), estimated glomerular filtration rate (eGFR), platelet (PLT) and fibrinogen (FIB) were significantly increased during the treatment (P < 0.05), while glycosylated hemoglobin (HbA1c), high density lipoprotein cholesterol (HDL-C), blood urea nitrogen (BUN), serum creatinine (SCr), high-sensitivity C reactive protein (hs-CRP), IL-6, TNF-α, TGF-β, white blood cells (WBC), absolute neutrophil count (ANC), prothrombin time (PT), activated partial thromboplastin time (APTT), D-dimer (D-D), fibrinogen degradation products (FDP) and lactate dehydrogenase (LDH) were significantly decreased during the treatment (P < 0.05). The proportion of patients with hemorrhage and high-risk APL in the abnormal coagulation group was significantly higher than that in the normal coagulation group (P < 0.05). The levels of IL-6, TNF-α, WBC, ANC, D-D, FDP and LDH in the abnormal coagulation group were significantly higher than those in the normal coagulation group (P < 0.05). The influencing factors selected by univariate analysis were incorporated into logistic regression analysis and neural network model to predict the risk of coagulation dysfunction in APL patients. ROC curves showed that the AUC of the two models were 096 and 0.908, the sensitivity were 0.824 and 0.892, the specificity were 0.940 and 0.904, the Youden index were 064 and 0.796, and the accuracy were 0.882 and 0.898, respectively.
CONCLUSION
High risk stratification, hemorrhage, elevated WBC, LDH, ANC and FDP levels are independent risk factors for coagulation dysfunction in APL patients. The logistic regression model and neural network model based on these risk factors demonstrate good predictive performance for coagulation dysfunction in APL patients.
Humans
;
Leukemia, Promyelocytic, Acute/therapy*
;
Blood Coagulation
;
Retrospective Studies
;
Male
;
Female
;
Risk Factors
;
Logistic Models
;
Middle Aged
;
Adult
;
ROC Curve
9.The Molecular Mechanism of HCQ Reversing Immune Mediators Dysregulation in Severe Infection after Chemotherapy in Acute Myeloid Leukemia and Inducing Programmed Death of Leukemia Cells.
Qing-Lin XU ; Yan-Quan LIU ; He-Hui ZHANG ; Fen WANG ; Zuo-Tao LI ; Zhi-Min YAN ; Shu-Juan CHEN ; Hong-Quan ZHU
Journal of Experimental Hematology 2025;33(4):931-938
OBJECTIVE:
To explore the effects of hydroxychloroquine (HCQ) on immune mediators dysregulation in severe infection after chemotherapy in acute myeloid leukemia (AML) and its molecular mechanism.
METHODS:
Bone marrow or peripheral blood samples of 36 AML patients with severe infection (AML-SI) and 29 AML patients without infection (AML-NI) after chemotherapy were collected from the First Affiliated Hospital of Gannan Medical University from August 2022 to June 2023. In addition, the peripheral blood of 21 healthy subjects from the same period in our hospital was selected as the control group. The mRNA expressions of CXCL12, CXCR4 and CXCR7 were detected by RT-qPCR technology, and the levels of IL-6, IL-8 and TNF-α were detected by ELISA. Leukemia-derived THP-1 cells were selected and constructed as AML disease model. At the same time, bone marrow mesenchymal stem cells (BM-MSCs) from AML-SI patients were co-cultured with THP-1 cells and divided into Mono group and Co-culture group. THP-1 cells were treated with different concentration gradients of HCQ. The cell proliferation activity was subsequently detected by CCK-8 method and apoptosis was detected by Annexin V/PI double staining flow cytometry. ELISA was used to detect the changes of IL-6, IL-8 and TNF-α levels in the supernatant of the cell co-culture system, RT-qPCR was used to detect the mRNA expression changes of the core members of the CXCL12-CXCR4/7 regulatory axis, and Western blot was used to detect the expressions of apoptosis regulatory molecules and related signaling pathway proteins.
RESULTS:
CXCL12, CXCR4, CXCR7, as well as IL-6, IL-8, and TNF-α were all abnormally increased in AML patients, and the increases were more significant in AML-SI patients (P <0.01). Furthermore, there were statistically significant differences between AML-NI patients and AML-SI patients (all P <0.05). HCQ could inhibit the proliferation and induce the apoptosis of THP-1 cells, but the low concentration of HCQ had no significant effect on the killing of THP-1 cells. When THP-1 cells were co-cultured with BM-MSCs of AML patients, the levels of IL-6, IL-8 and TNF-α in the supernatance of Co-culture group were significantly higher than those of Mono group (all P <0.01). After HCQ intervention, the levels of IL-6, IL-8 and TNF-α in cell culture supernatant of Mono group were significantly decreased compared with those before intervention (all P <0.01). Similarly, those of Co-culture group were also significantly decreased (all P <0.001). However, the expression of the core members of the CXCL12-CXCR4/7 regulatory axis was weakly affected by HCQ. HCQ could up-regulate the expression of pro-apoptotic protein Bax, down-regulate the expression of anti-apoptotic protein Bcl-2, as well as simultaneously promote the hydrolytic activation of Caspase-3 when inhibiting the activation level of TLR4/NF-κB pathway, then induce the programmed death of THP-1 cells after intervention.
CONCLUSION
The core members of CXCL12-CXCR4/7 axis and related cytokines may be important mediators of severe infectious immune disorders in AML patients. HCQ can inhibit cytokine levels to reverse immune mediators dysregulation and suppress malignant biological characteristics of leukemia cells. The mechanisms may be related to regulating the expression of Bcl-2 family proteins, hydrolytically activating Caspase-3 and inhibiting the activation of TLR4/NF-κB signaling pathway.
Humans
;
Leukemia, Myeloid, Acute/immunology*
;
Hydroxychloroquine/pharmacology*
;
Receptors, CXCR4/metabolism*
;
Apoptosis/drug effects*
;
Tumor Necrosis Factor-alpha/metabolism*
;
Chemokine CXCL12/metabolism*
;
Interleukin-8/metabolism*
;
Interleukin-6/metabolism*
;
Receptors, CXCR/metabolism*
;
Mesenchymal Stem Cells
;
THP-1 Cells
10.The Maintenance Effects of Extracellular Vesicles Derived from Placental Tissue and Mesenchymal Stem Cells on Hematopoietic Stem and Progenitor Cells.
Ying-Jie LIU ; Chen WANG ; Tao CHENG ; Hui CHENG
Journal of Experimental Hematology 2025;33(5):1499-1506
OBJECTIVE:
To investigate the role of extracellular vesicles (EVs) derived from placental tissue and placental mesenchymal stem cells in supporting the growth and function of adult hematopoietic stem and progenitor cells (HSPCs), so as to optimize their culture system.
METHODS:
EVs were isolated from mouse placental tissue (PL-EV) and placental mesenchymal stem cells (PL-MSC-EV). These EVs were co-cultured with 3 000 adult bone marrow LKS+ (lineage- c-Kit+ Sca-1+ ) cells for 72 hours at concentrations of 0, 1, 10, 50, 100, and 200 μg/ml. The proportion and absolute count of LKS+ cells after co-culture were analyzed by flow cytometry, while their self-renewal and multi-lineage differentiation potential were evaluated using colony-forming unit (CFU) assays.
RESULTS:
Compared to the blank control group, the proportion of LKS+ cells were significantly increased in PL-EV groups at concentrations ≥10 μg/ml after 72 hours of co-culture. Notably, LKS+ cells co-cultured at the concentration of 10 μg/ml exhibited the highest absolute count (899±171) and the highest proportion of LT-HSCs (LKS+ CD135- CD34-) (0.67%±0.07%). In the PL-MSC-EV co-culture system, the absolute count of LKS+ cells peaked at the concentration of 1 μg/ml (1011±99 cells), though the proportion of LT-HSCs was relatively low (0.15%±0.05%). The comparison between these two culture systems revealed that PL-EV at 10 μg/ml and PL-MSC-EV at 1 μg/ml displayed the most pronounced effects on LKS+ cell proliferation, but with no significant difference between them. CFU assays showed that, in the PL-EV culture system, the number of LKS+ colony formed in 1 and 10 μg/ml groups was not significantly different compared with the blank control group. In contrast, in the PL-MSC-EV system, the highest LKS+ colony-forming capacity was observed when co-cultured with 1 μg/ml PL-MSC-EV, while a significant reduction was noted at concentrations above 10 μg/ml.
CONCLUSION
PL-EV and PL-MSC-EV effectively support the growth and function of HSPCs. And PL-MSC-EV exhibits a superior efficacy in preserving the stemness of LKS+ cells, thus suggesting its potential for optimizing culture systems of HSPCs.
Mesenchymal Stem Cells/cytology*
;
Extracellular Vesicles
;
Placenta/cytology*
;
Female
;
Animals
;
Mice
;
Pregnancy
;
Hematopoietic Stem Cells/cytology*
;
Coculture Techniques
;
Cell Differentiation
;
Cell Proliferation
;
Cells, Cultured


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