1.Advances in the application of physiologically-based pharmacokinetic model in EGFR-TKI precision therapy
Yingying YANG ; Jiaqi SHAO ; Qiulin XIANG ; Guoxing LI ; Xian YU
China Pharmacy 2025;36(8):1013-1018
Epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI) represent a class of small-molecule targeted therapeutics for oncology treatment, and serve as first-line therapy for advanced non-small cell lung cancer (NSCLC) with EGFR- sensitive mutations, with representative agents including gefitinib, dacomitinib, and osimertinib. In clinical practice, dose adjustment of EGFR-TKI may be required for cancer patients under special circumstances such as drug combinations or hepatic/ renal impairment. Physiologically-based pharmacokinetic (PBPK) model, capable of predicting pharmacokinetic (PK) processes in humans, has emerged as a vital tool for clinical dose optimization. This article sorts the modeling methodologies, workflows, and commonly used software tools for PBPK model, and summarizes the current applications of PBPK model in EGFR-TKI precision therapy as of June 30, 2024. Findings demonstrate that PBPK modeling methods commonly employ the “bottom-up” approach and the middle-out approach. The process typically involves four steps: parameter collection, compartment selection, model validation, and model application. Commonly used software for modeling includes Simcyp, GastroPlus, and open-source software such as PK- Sim. PBPK model can be utilized for predicting drug-drug interactions of EGFR-TKI co-administered with metabolic enzyme inducers or inhibitors, acid-suppressive drugs, or traditional Chinese and Western medicines. It can also adjust dosages in conjunction with genomics, predict PK processes in special populations (such as patients with liver or kidney dysfunction, pediatric patients), evaluate the efficacy and safety of drugs, and extrapolate PK predictions from animal models to humans.
2.Regulation of Immune Function by Exercise-induced Metabolic Remodeling
Hui-Guo WANG ; Gao-Yuan YANG ; Xian-Yan XIE ; Yu WANG ; Zi-Yan LI ; Lin ZHU
Progress in Biochemistry and Biophysics 2025;52(6):1574-1586
Exercise-induced metabolic remodeling is a fundamental adaptive process whereby the body reorganizes systemic and cellular metabolism to meet the dynamic energy demands posed by physical activity. Emerging evidence reveals that such remodeling not only enhances energy homeostasis but also profoundly influences immune function through complex molecular interactions involving glucose, lipid, and protein metabolism. This review presents an in-depth synthesis of recent advances, elucidating how exercise modulates immune regulation via metabolic reprogramming, highlighting key molecular mechanisms, immune-metabolic signaling axes, and the authors’ academic perspective on the integrated “exercise-metabolism-immunity” network. In the domain of glucose metabolism, regular exercise improves insulin sensitivity and reduces hyperglycemia, thereby attenuating glucose toxicity-induced immune dysfunction. It suppresses the formation of advanced glycation end-products (AGEs) and interrupts the AGEs-RAGE-inflammation positive feedback loop in innate and adaptive immune cells. Importantly, exercise-induced lactate, traditionally viewed as a metabolic byproduct, is now recognized as an active immunomodulatory molecule. At high concentrations, lactate can suppress immune function through pH-mediated effects and GPR81 receptor activation. At physiological levels, it supports regulatory T cell survival, promotes macrophage M2 polarization, and modulates gene expression via histone lactylation. Additionally, key metabolic regulators such as AMPK and mTOR coordinate immune cell energy balance and phenotype; exercise activates the AMPK-mTOR axis to favor anti-inflammatory immune cell profiles. Simultaneously, hypoxia-inducible factor-1α (HIF-1α) is transiently activated during exercise, driving glycolytic reprogramming in T cells and macrophages, and shaping the immune landscape. In lipid metabolism, exercise alleviates adipose tissue inflammation by reducing fat mass and reshaping the immune microenvironment. It promotes the polarization of adipose tissue macrophages from a pro-inflammatory M1 phenotype to an anti-inflammatory M2 phenotype. Moreover, exercise alters the secretion profile of adipokines—raising adiponectin levels while reducing leptin and resistin—thereby influencing systemic immune balance. At the circulatory level, exercise improves lipid profiles by lowering pro-inflammatory free fatty acids (particularly saturated fatty acids) and triglycerides, while enhancing high-density lipoprotein (HDL) function, which has immunoregulatory properties such as endotoxin neutralization and macrophage cholesterol efflux. Regarding protein metabolism, exercise triggers the expression of heat shock proteins (HSPs) that act as intracellular chaperones and extracellular immune signals. Exercise also promotes the secretion of myokines (e.g., IL-6, IL-15, irisin, FGF21) from skeletal muscle, which modulate immune responses, facilitate T cell and macrophage function, and support immunological memory. Furthermore, exercise reshapes amino acid metabolism, particularly of glutamine, arginine, and branched-chain amino acids (BCAAs), thereby influencing immune cell proliferation, biosynthesis, and signaling. Leucine-mTORC1 signaling plays a key role in T cell fate, while arginine metabolism governs macrophage polarization and T cell activation. In summary, this review underscores the complex, bidirectional relationship between exercise and immune function, orchestrated through metabolic remodeling. Future research should focus on causative links among specific metabolites, signaling pathways, and immune phenotypes, as well as explore the epigenetic consequences of exercise-induced metabolic shifts. This integrated perspective advances understanding of exercise as a non-pharmacological intervention for immune regulation and offers theoretical foundations for individualized exercise prescriptions in health and disease contexts.
3.Mechanism of action of traditional Chinese medicine in treatment of nonalcoholic fatty liver disease based on intestinal microecology
Xue YANG ; Xu ZHANG ; Jin XIAN ; Qiwen TAN ; Huijuan YU
Journal of Clinical Hepatology 2024;40(4):804-809
Nonalcoholic fatty liver disease (NAFLD) is a multisystem disease associated with obesity, insulin resistance, and dyslipidemia and has a complex pathogenesis. Studies have shown that gut microbiota dysbiosis is closely associated with the onset of NAFLD, and traditional Chinese medicine treatment can improve the laboratory markers and clinical symptoms of NAFLD patients by regulating intestinal microbiota and its metabolites. This article elaborates on the association between NAFLD and gut microbiota, the involvement of gut microbiota dysbiosis in the pathogenesis of NAFLD, and the possible mechanism of traditional Chinese medicine treatment in improving NAFLD from the perspective of gut microbiota, in order to provide new ideas for the treatment of NAFLD.
4.Effects of CYP3A5 gene polymorphism and Wuzhi capsule on early postoperative tacrolimus exposure and adverse reactions in renal transplant patients
Qiulin XIANG ; Ling LIU ; Yi YANG ; Guoxing LI ; Song CHEN ; Yingying YANG ; Xian YU
China Pharmacy 2024;35(14):1765-1769
OBJECTIVE To investigate the effects of CYP3A5 gene polymorphism and Wuzhi capsule (WZ) on early postoperative tacrolimus exposure and adverse reactions in renal transplant patients. METHODS A total of 132 patients who underwent renal transplantation and received tacrolimus + mycophenolic acids + prednisone after operation in our hospital from September 2021 to September 2023 were selected and divided into four groups according to genotypes (CYP3A5*1 or CYP3A5*3/*3) and with or without WZ (“ +WZ” meant drug combination, “ +NO WZ” meant without combination). The blood trough concentration/daily dose (c0/D) values of the four groups were analyzed on the 14th day, 1 month and 3 months after renal transplantation. The incidence of acute rejection and the incidence of tacrolimus-related adverse reactions within 3 months after transplantation were compared among 4 groups. RESULTS On the 14th day, 1 month and 3 months after surgery (except for the CYP3A5*1+WZ group), c0/D values of CYP3A5*1 genotype patients were significantly lower than those of CYP3A5*3/*3 genotype patients regardless of whether they were treated with WZ additionally (P<0.05). Within 3 months after surgery, although there was no significant difference in the incidence of acute rejection and tacrolimus-related adverse reactions among the four groups (P> 0.05), the incidence of hyperglycemia in patients with CYP3A5*3/*3 was higher (41.67%). CONCLUSIONS CYP3A5 gene polymorphism is significantly related to tacrolimus c0/D in kidney transplant patients. Under the premise of c0 monitoring of tacrolimus, patients with CYP3A5*1 genotype should be given WZ as soon as possible after surgery to accelerate tacrolimus to reach the therapeutic concentration range, while CYP3A5*3/*3 genotype is not recommended to be given WZ because of the higher risk of hyperglycemia.
5.Host Targets Interacting with Influenza Virus NP and Mechanism of Gardenia Jasminoides Iridoid Glycoside Against Influenza Virus
Xiaowei YANG ; Lei BAO ; Yu ZHANG ; Xian LIU ; Zihan GENG ; Shuran LI ; Jingsheng ZHANG ; Xiaolan CUI ; Shanshan GUO
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(13):60-66
ObjectiveTo explore host factors interacting with influenza virus nucleoprotein (NP) and study their effects on influenza virus replication, as well as the mechanism of gardenia jasminoides iridoid glycoside (IGE) in inhibiting influenza virus. MethodA yeast two-hybrid system was utilized to screen host factors that interacted with influenza virus NP. Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD), glucosamine-6-phosphate deaminase 1 (GNPDA1), poly(rC)-binding protein 1 (PCBP1), and protein inhibitor of activated signal transducer and activator of transcription (STAT) protein 1 (PIAS1) were validated by immunoprecipitation assay. The effects of PIAS1 and HNRNPD on influenza virus replication were compared by a dual luciferase assay, and the effects of IGE on influenza virus replication were examined in the presence of transfected ribonucleoprotein (RNP) and knockdown of PIAS1. ICR mice were randomly divided into a normal group, model group, oseltamivir phosphate group, and high, medium, and low dose IGE groups, with 10 mice in each group. In addition to the normal group, each group was infected with the influenza A virus FM1 strain by nasal drip to establish a viral pneumonia model. The high, medium, and low dose IGE groups were given drugs of 50, 25, and 12.5 mg∙kg-1 by gavage, and the oseltamivir phosphate group was given the drug of 27.5 mg∙kg-1 by gavage. Equal amounts of distilled water were instilled in the normal and model groups for four consecutive days. Later, protein expression of PIAS1, NP, phosphorylated (p)-STAT3, STAT3, p-STAT1, and STAT1 were detected in the lung tissue by Western blot. ResultIn yeast two-hybrid assays, 16 potential host targets interacting with influenza virus NP were identified. Immunoprecipitation experiments revealed that HNRNPD and PIAS1 could interact with influenza virus NP. The dual luciferase reporter assays found that both PIAS1 knockdown and overexpression significantly affected IAV RNP activity (P<0.05, P<0.01), and the effect of HNRNPD on IAV RNP was not significant. Both high and low dose IGE groups reduced influenza virus replication (P<0.05) and reversed the increase in influenza virus replication caused by the knockdown of PIAS1(P<0.05, P<0.01). The expressions of PIAS1, NP, p-STAT3, p-STAT1, and STAT1 in the lung tissue of infected mice were reduced to different degrees in each IGE group (P<0.05, P<0.01). ConclusionPIAS1 interacts with influenza virus NP and is able to inhibit influenza virus replication. IGE may exert antiviral effects by inhibiting the activity of IAV RNP through the PIAS1/STAT1 pathway.
6.Analysis of potential categories of sexual behaviors among male students who have sex with men and the status of pre exposure prophylaxis use
Chinese Journal of School Health 2024;45(7):974-977
Objective:
To analyze the use of preexposure prophylaxis (PrEP) among male students who had sex with men (MSM) with different sexual behavior patterns using potential categories, so as to provide evidence for determining the use patterns of PrEP consistent with MSM.
Methods:
A questionnaire survey was conducted by proportional sampling method on MSM in 31 provincial administrative regions in mainland China from 20 October to 30 December 2021, a total of 1 040 students were selected for the study. Latent variable analyses were conducted on a total of seven sexual behavioral characteristics, including knowledge of sexual partner HIV infection, frequency of condom use, number of sexual partners, engaging in group sex, provision of commercial sex, use of sex aids, and history of sexually transmitted infections (STIs) in the past year. And demographic characteristics were analyzed by Logistic regression analysis. The rates of PrEP awareness, willingness to use and usage rate in different sexual behavior risk groups were investigated.
Results:
Student MSM could be divided into two potential category groups:a lowrisk behavior group (82.4%) and a highrisk behavior group (17.6%). The PrEP usage rate (15.8%) was higher in the highrisk behavior group, and the difference was statistically significant compared to the lowrisk behavior group (7.2%) (χ2=13.43, P<0.05). Student MSM residing in the northeast, south, and northwest of China, in the pilot city, and with a sex role of "0.5" (possible acceptance and insertion of sexual behavior) were more likely to be in the highrisk behavior group (OR=3.13, 3.07, 3.87, 2.22, 1.66, P<0.05).
Conclusion
Student MSM in highrisk and lowrisk sexual differs in the behavior of PrEP, and targeted interventions should be implemented to promote the use of PrEP and reduce HIV infection in this population.
7.Analysis of pre-exposure prophylaxis awareness, willingness, uptake patterns, barriers and needs among MSM students and its influencing factors
Chinese Journal of School Health 2024;45(1):55-59
Objective:
To explore the pre-exposure prophylaxis (PrEP) awareness, willingness, uptake patterns, barriers and needs among Chinese student men who have sex with men (MSM), so as to provide relevant evidence for targeted interventions with PrEP.
Methods:
A proportional sampling method was used to conduct a cross sectional survey of MSM aged 16 years and older residing in 21 provinces, municipalities, and autonomous regions in mainland China between October 20 and December 20, 2021, to collect information on demographic and sexual behavioral characteristics, and 923 students of them were selected as the subjects of this study. The chi-square test and Fisher s test were used for univariate analysis, followed by multivariate Logistic regression to analyze the influencing factors of PrEP awareness and uptake.
Results:
According to the cascade analysis method, the awareness, willingness, uptake and adherence rates of PrEP among the student MSM were obtained as 88.95%, 67.36%, 13.20% and 45.21 %, respectively. HIV testing more than once in the last 3 months, and all of them were aware of the HIV test results of their sexual partners, and those with high frequency of condom use had a higher rate of awareness ( OR =2.32, 1.79, 1.69, P <0.05). Willingness rates were higher for those from the pilot city, using substances, and HIV testing more than once in the last 3 months ( OR =2.13, 1.65, 1.69, P <0.05). Higher rates of uptake were found among those from high risk and pilot areas, presence of commercial sex, substance use, and high literacy ( OR =5.60, 3.54,2.81, 1.92, 4.54, P <0.05). Adherence rates were higher among those who used one pill per day or both ( OR =12.77, 13.26, P <0.05). The barriers and needs faced by student MSM were primarily personal concerns about medication side effects, preventative effects, and confidence in sexual behavioral styles, and the high cost of medication and related service costs.
Conclusions
The student MSM population in China is characterized by high awareness, low willingness, low uptake, and low adherence to PrEP. Targeted interventions should be considered and tailored by the departments to facilitate PrEP promotion among student MSM.
8.Current status and related factors of antiviral treatment among HIV infected men who have sex with men students
Chinese Journal of School Health 2024;45(12):1798-1801
Objective:
To investigate the current situation and related factors of antiretroviral therapy (ART) among HIV infected male students engaging in men who have sex with men (MSM), so as to provide the reference data for HIV prevention and treatment.
Methods:
In November 2021, 137 MSM students from 31 provincial administrative regions in China were recruited. An online survey was conducted to collect data on demographic characteristics, ART status, CD4 count, and HIV viral load before treatment. Logistic regression was used to analyze the factors related the effectiveness of ART in MSM.
Results:
Among the included research subjects, 14.6% had late detection of HIV,97.1% of participants were currently undergoing ART. Among those whose ART duration was less than 6 months, while 76.9% were undergoing ART. Logistic regression indicated that HIV infected students who received ART for more than 24 months ( OR =5.28, 95% CI =1.38-20.22) had a higher rate of successful HIV suppression. HIV infected students who reported physical sensory side effects ( OR =0.08, 95% CI =0.01-0.71) and cognitive side effects ( OR =0.28, 95% CI =0.09-0.90) were more likely to experience failure of ARI inhibition ( P <0.05).
Conclusions
There is still room for improvement in the efficacy of ART among MSM students. Strategies to improve treatment adherence must consider individual variances among HIV infected patients and the side effects of medications when designing treatment plans.
9.Blood security and management of transfusion-dependent thalassaemia(TDT)patients in Nanning:analysis of"col-lection-based-supply"blood management mode
Mei YU ; Yang CHEN ; Xian LI ; Qiuhong MO ; Linbin HUANG ; Xipeng YAN ; Baoren HE ; Bin LI ; Limin CHEN
Chinese Journal of Blood Transfusion 2024;37(5):567-574
Objective To retrospectively analyze the blood use of transfusion-dependent thalassemia(TDT)patients in 9 designated transfusion medical institutions from 2018 to 2023 in Nanning,and to evaluate the effect of"three designated"blood transfusion mode(hereby means TDT patients undergoing blood transfusion in designated transfusion medical institu-tions regularly)and"collection-based-supply"blood management mode on blood security of TDT patients.Methods The"three designated"blood transfusion mode was implemented to ensure that TDT patients registered in the local household registration(referred to as the"register")obtain the rights and interests of outpatient transfusion and blood security of des-ignated medical institutions.The"collection-based-supply"blood management mode was implemented to assess the blood needs of"register"TDT patients and meet their needs to the maximum extent according to the blood inventory(collection).Results From 2018 to 2023,the total blood supply of"register"TDT patients was 10.37%of the total red blood supply of all medical institutions(138 509.5 U/1 335 788.0 U),with the highest proportion of type O blood as 46.34%(64 181.0 U/138 509.5 U)and the lowest proportion of type AB blood as 3.85%(5 331.0 U/138 509.5 U).In 2018,9 transfusion medical institutions were designated for TDT patients.There were a total of 766 TDT patients in the register,with the per ca-pita annual blood transfusion volume increased from20.28 U(15 531.0 U/766 patients)in2018 to36.01 U(27 586.0 U/766 patients)in 2023,maintaining a positive growth every year(30.26%,4.94%,11.71%,8.61%,4.94%and 7.10%).Conclusion The"three designated"blood transfusion mode and the"collection-based-supply"blood management mode can effectively guarantee the blood supply of TDT patients.
10.Promotion effect of FOXCUT as a microRNA sponge for miR-24-3p on progression in triple-negative breast cancer through the p38 MAPK signaling pathway
Xiafei YU ; Fangze QIAN ; Xiaoqiang ZHANG ; Yanhui ZHU ; Gao HE ; Junzhe YANG ; Xian WU ; Yi ZHOU ; Li SHEN ; Xiaoyue SHI ; Hongfei ZHANG ; Xiao’an LIU
Chinese Medical Journal 2024;137(1):105-114
Background::Triple-negative breast cancer (TNBC) is a type of highly invasive breast cancer with a poor prognosis. According to new research, long noncoding RNAs (lncRNAs) play a significant role in the progression of cancer. Although the role of lncRNAs in breast cancer has been well reported, few studies have focused on TNBC. This study aimed to explore the biological function and clinical significance of forkhead box C1 promoter upstream transcript (FOXCUT) in triple-negative breast cancer.Methods::Based on a bioinformatic analysis of the cancer genome atlas (TCGA) database, we detected that the lncRNA FOXCUT was overexpressed in TNBC tissues, which was further validated in an external cohort of tissues from the General Surgery Department of the First Affiliated Hospital of Nanjing Medical University. The functions of FOXCUT in proliferation, migration, and invasion were detected in vitro or in vivo. Luciferase assays and RNA immunoprecipitation (RIP) were performed to reveal that FOXCUT acted as a competitive endogenous RNA (ceRNA) for the microRNA miR-24-3p and consequently inhibited the degradation of p38. Results::lncRNA FOXCUT was markedly highly expressed in breast cancer, which was associated with poor prognosis in some cases. Knockdown of FOXCUT significantly inhibited cancer growth and metastasis in vitro or in vivo. Mechanistically, FOXCUT competitively bounded to miR-24-3p to prevent the degradation of p38, which might act as an oncogene in breast cancer. Conclusion::Collectively, this research revealed a novel FOXCUT/miR-24-3p/p38 axis that affected breast cancer progression and suggested that the lncRNA FOXCUT could be a diagnostic marker and therapeutic target for breast cancer.


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