1.Expression of lymphocyte subsets in the bone marrow of patients with acute myeloid leukemia and its influence on prognosis
Jinhong NIE ; Jiebing XIAO ; Yingchun SHAO ; Chenghui LI ; Lu GAO ; Xiao MA ; Xiaojin WU ; Ziling ZHU
Chinese Journal of Blood Transfusion 2025;38(7):902-908
Objective: To explore the correlation between the composition of bone marrow lymphocyte subsets and the clinical attributes observed in de novo AML patients, as well as their influence on prognosis. Methods: A detailed study was carried out on a cohort of 191 de novo acute myeloid leukemia patients who were admitted to our medical center between October 2022 and September 2024. In addition, a group of 24 patients with iron deficiency anemia individuals was carefully chosen as the control cohort. The proportions of lymphocyte subsets within the bone marrow of de novo AML patients were analyzed. Furthermore, an in-depth analysis was performed to investigate the association between the expression levels of these subsets in de novo AML patients and their clinical attributes, as well as their prognostic implications. Results: The proportion of CD19
and CD56
lymphocytes within the bone marrow of de novo AML patients significantly diminished compared to the control cohort (8.5% vs 13.2% P<0.05, and 15.5% vs 18.0%, P<0.05). Conversely, no significant discrepancies were observed in the CD3
, CD3
CD4
, and CD3
CD8
lymphocyte percentages between the AML patients and control group (71.7% vs 72.1%, 32.5% vs 33.7% and 32.8% vs 35.7%, P>0.05). When analyzing the relationships between lymphocyte subsets within the bone marrow of de novo patients and their respective clinical characteristics, patients aged 60 years and above exhibited diminished percentages of CD3
CD8
lymphocytes in the bone marrow compared to their younger counterparts (31.6% vs 34.1%, P<0.05), while the CD56
lymphocyte subsets demonstrated an increased prevalence (17.2% vs 14.4%, P<0.05). Furthermore, patients with leukocytosis (WBC≥100×10
/L) presented lower levels of CD3
and CD3
CD4
lymphocytes in the bone marrow compared with those without it (65.3% vs 72.9% P<0.05, and 28.9% vs 33.2%, P<0.05), respectively. The AML1-ETO fusion gene-positive cohort exhibited a higher prevalence of CD3
CD8
lymphocytes in the bone marrow than in the negative group (38.2% vs 32.3%, P<0.05), whereas the FLT3-ITD mutation-positive group presented a decreased prevalence of CD56
lymphocytes compared with the negative group (12.4% vs 16.8%, P<0.05). In addition, the NPM1 mutation-positive group demonstrated lower levels of CD3
CD8
lymphocytes in the bone marrow than in the negative group (29.1% vs 33.3%, P<0.05). Variables such as tumor protein p53(TP53) mutation positive, the absence of hematopoietic stem cell transplantation, and CD3
CD4
lymphocyte proportions below 25% were identified as independent adverse prognostic indicators for AML patients (P<0.05). Conclusion: The pathogenesis of AML is closely associated with an imbalance in bone marrow lymphocyte subsets. The FLT3-ITD mutation potentially contributes to the dysregulation of CD56
lymphocyte subset expression. The AML1-ETO fusion gene and NPM1 mutation are implicated in the abnormal expression of CD3
CD8
lymphocytes within the bone marrow. Moreover, the percentage of CD3
CD4
lymphocytes in the bone marrow serves as a prognostic factor for de novo AML patients.
2.Expression of lymphocyte subsets in the bone marrow of patients with acute myeloid leukemia and its influence on prognosis
Jinhong NIE ; Jiebing XIAO ; Yingchun SHAO ; Chenghui LI ; Lu GAO ; Xiao MA ; Xiaojin WU ; Ziling ZHU
Chinese Journal of Blood Transfusion 2025;38(7):902-908
Objective: To explore the correlation between the composition of bone marrow lymphocyte subsets and the clinical attributes observed in de novo AML patients, as well as their influence on prognosis. Methods: A detailed study was carried out on a cohort of 191 de novo acute myeloid leukemia patients who were admitted to our medical center between October 2022 and September 2024. In addition, a group of 24 patients with iron deficiency anemia individuals was carefully chosen as the control cohort. The proportions of lymphocyte subsets within the bone marrow of de novo AML patients were analyzed. Furthermore, an in-depth analysis was performed to investigate the association between the expression levels of these subsets in de novo AML patients and their clinical attributes, as well as their prognostic implications. Results: The proportion of CD19
and CD56
lymphocytes within the bone marrow of de novo AML patients significantly diminished compared to the control cohort (8.5% vs 13.2% P<0.05, and 15.5% vs 18.0%, P<0.05). Conversely, no significant discrepancies were observed in the CD3
, CD3
CD4
, and CD3
CD8
lymphocyte percentages between the AML patients and control group (71.7% vs 72.1%, 32.5% vs 33.7% and 32.8% vs 35.7%, P>0.05). When analyzing the relationships between lymphocyte subsets within the bone marrow of de novo patients and their respective clinical characteristics, patients aged 60 years and above exhibited diminished percentages of CD3
CD8
lymphocytes in the bone marrow compared to their younger counterparts (31.6% vs 34.1%, P<0.05), while the CD56
lymphocyte subsets demonstrated an increased prevalence (17.2% vs 14.4%, P<0.05). Furthermore, patients with leukocytosis (WBC≥100×10
/L) presented lower levels of CD3
and CD3
CD4
lymphocytes in the bone marrow compared with those without it (65.3% vs 72.9% P<0.05, and 28.9% vs 33.2%, P<0.05), respectively. The AML1-ETO fusion gene-positive cohort exhibited a higher prevalence of CD3
CD8
lymphocytes in the bone marrow than in the negative group (38.2% vs 32.3%, P<0.05), whereas the FLT3-ITD mutation-positive group presented a decreased prevalence of CD56
lymphocytes compared with the negative group (12.4% vs 16.8%, P<0.05). In addition, the NPM1 mutation-positive group demonstrated lower levels of CD3
CD8
lymphocytes in the bone marrow than in the negative group (29.1% vs 33.3%, P<0.05). Variables such as tumor protein p53(TP53) mutation positive, the absence of hematopoietic stem cell transplantation, and CD3
CD4
lymphocyte proportions below 25% were identified as independent adverse prognostic indicators for AML patients (P<0.05). Conclusion: The pathogenesis of AML is closely associated with an imbalance in bone marrow lymphocyte subsets. The FLT3-ITD mutation potentially contributes to the dysregulation of CD56
lymphocyte subset expression. The AML1-ETO fusion gene and NPM1 mutation are implicated in the abnormal expression of CD3
CD8
lymphocytes within the bone marrow. Moreover, the percentage of CD3
CD4
lymphocytes in the bone marrow serves as a prognostic factor for de novo AML patients.
3.A Prediction Model for Colorectal Adenoma and Colorectal Cancer Based on Routine Test
Junsheng LIN ; Ziling YING ; Zhengyuan HUANG ; Xianjin ZHU ; Yingping CAO ; Pingxia LU
Cancer Research on Prevention and Treatment 2024;51(5):353-360
Objective To analyze the routine test parameter levels of patients with colorectal adenoma and colorectal cancer,and develop a prediction model.Methods A total of 580 patients diagnosed with colorectal adenoma(117 patients)and colorectal cancer(463 patients)were included in the retrospective study.The patients were randomly divided into two groups according to a 7:3 ratio:a training set with 406 cases and a validation set with 174 cases.Logistic regression analysis was used to establish a prediction model,and a nomogram was drawn.The model′s discrimination,calibration,and clinical applicability were evaluated using receiver operating characteristic curve(ROC),calibration plot,and decision curve analysis(DCA).Results Univariate logistic regression analysis identified 13 potential predictors:age,fecal occult blood test(FOBT),fibrinogen(FIB),thrombin time(TT),albumin(ALB),white blood cell value(WBC),neutrophil count(NEUT#),hematocrit value(HCT),mean corpuscular hemoglobin(MCH),red cell distribution width(RDW),platelet count(PLT),mean platelet volume(MPV),and activated partial thromboplastin time(APTT).Multivariate logistic regression analysis showed MPV,FIB,ALB,FOBT,TT,and HCT were risk factors for colorectal cancer in patients with colorectal adenoma(P<0.05).A nomogram was constructed based on these predictors to build a prediction model.The AUC of the ROC curve was 0.915 for colorectal cancer in the training set and 0.836 in the validation set.Calibration plots demonstrated high prediction accuracy and good model calibration.DCA results indicated the prediction model provided greater net benefit compared with the extreme models at threshold probabilities of approximately 55%-95%.Conclusion The developed prediction model exhibits satisfactory discrimination,calibration,and clinical applicability.The model can serve as an auxiliary tool in distinguishing between colorectal adenoma and colorectal cancer in patients.
4.Roles of THEM4 in the Akt pathway:a double-edged sword
XIE WEN ; LIU WEIDONG ; WANG LEI ; ZHU BIN ; ZHAO CONG ; LIAO ZILING ; LI YIHAN ; JIANG XINGJUN ; LIU JIE ; REN CAIPING
Journal of Zhejiang University. Science. B 2024;25(7):541-556
The protein kinase B(Akt)pathway can regulate the growth,proliferation,and metabolism of tumor cells and stem cells through the activation of multiple downstream target genes,thus affecting the development and treatment of a range of diseases.Thioesterase superfamily member 4(THEM4),a member of the thioesterase superfamily,is one of the Akt kinase-binding proteins.Some studies on the mechanism of cancers and other diseases have shown that THEM4 binds to Akt to regulate its phosphorylation.Initially,THEM4 was considered an endogenous inhibitor of Akt,which can inhibit the phosphorylation of Akt in diseases such as lung cancer,pancreatic cancer,and liver cancer,but subsequently,THEM4 was shown to promote the proliferation of tumor cells by positively regulating Akt activity in breast cancer and nasopharyngeal carcinoma,which contradicts previous findings.Considering these two distinct views,this review summarizes the important roles of THEM4 in the Akt pathway,focusing on THEM4 as an Akt-binding protein and its regulatory relationship with Akt phosphorylation in various diseases,especially cancer.This work provides a better understanding of the roles of THEM4 combined with Akt in the treatment of diseases.
5.First-line bevacizumab plus chemotherapy in Chinese patients with stage III/IV epithelial ovarian cancer, fallopian tube cancer or primary peritoneal cancer: a phase III randomized controlled trial
Xiaohua WU ; Jihong LIU ; Ruifang AN ; Rutie YIN ; Yu ZHANG ; Huaijun ZHOU ; Aiqin HE ; Li WANG ; Jieqing ZHANG ; Ziling LIU ; Wei DUAN ; Jianqing ZHU ; Ge LOU ; Guilin CHEN ; Ying CHENG ; Fengxia XUE ; Sonja NICK ; Haiyan WANG ; Donghang LI
Journal of Gynecologic Oncology 2024;35(5):e99-
Objective:
First-line bevacizumab plus carboplatin and paclitaxel (CP) is approved for stage III/IV ovarian cancer treatment following initial surgical resection, based on global phase III GOG-0218 and ICON7 trials. This study evaluated the efficacy and safety of bevacizumab + CP as first-line ovarian cancer therapy in Chinese patients.
Methods:
Patients with newly diagnosed, International Federation of Gynecology and Obstetrics (FIGO) stage III/IV epithelial ovarian, fallopian tube, or primary peritoneal cancer post-primary surgery were randomized 1:1 to receive 6 cycles of CP with bevacizumab/ placebo, followed by bevacizumab/placebo maintenance until unacceptable toxicity or disease progression. Primary endpoint was investigator-assessed progression-free survival (PFS). Stratification factors were FIGO stage and debulking status (stage III optimally debulked vs stage III suboptimally debulked vs stage IV) and Eastern Cooperative Oncology Group performance status (0 vs 1 or 2).
Results:
Of randomized patients, 51 received bevacizumab + CP and 49 received placebo + CP. Median PFS was 22.6 months with bevacizumab + CP (95% confidence interval [CI]=18.6, not estimable) and 12.3 months (95% CI=9.5, 15.0) with placebo + CP (stratified hazard ratio=0.30; 95% CI=0.17, 0.53). Treatment-related grade 3/4 adverse events occurred in 46 of 49 (94%) patients receiving bevacizumab + CP, and 34 of 50 (68%) receiving placebo + CP.
Conclusion
Bevacizumab + CP showed clinically meaningful improvement in PFS vs placebo + CP, consistent with GOG-0218 results. Safety data were aligned with the known bevacizumab safety profile. These results support first-line bevacizumab + CP therapy in Chinese patients with ovarian cancer.
6.First-line bevacizumab plus chemotherapy in Chinese patients with stage III/IV epithelial ovarian cancer, fallopian tube cancer or primary peritoneal cancer: a phase III randomized controlled trial
Xiaohua WU ; Jihong LIU ; Ruifang AN ; Rutie YIN ; Yu ZHANG ; Huaijun ZHOU ; Aiqin HE ; Li WANG ; Jieqing ZHANG ; Ziling LIU ; Wei DUAN ; Jianqing ZHU ; Ge LOU ; Guilin CHEN ; Ying CHENG ; Fengxia XUE ; Sonja NICK ; Haiyan WANG ; Donghang LI
Journal of Gynecologic Oncology 2024;35(5):e99-
Objective:
First-line bevacizumab plus carboplatin and paclitaxel (CP) is approved for stage III/IV ovarian cancer treatment following initial surgical resection, based on global phase III GOG-0218 and ICON7 trials. This study evaluated the efficacy and safety of bevacizumab + CP as first-line ovarian cancer therapy in Chinese patients.
Methods:
Patients with newly diagnosed, International Federation of Gynecology and Obstetrics (FIGO) stage III/IV epithelial ovarian, fallopian tube, or primary peritoneal cancer post-primary surgery were randomized 1:1 to receive 6 cycles of CP with bevacizumab/ placebo, followed by bevacizumab/placebo maintenance until unacceptable toxicity or disease progression. Primary endpoint was investigator-assessed progression-free survival (PFS). Stratification factors were FIGO stage and debulking status (stage III optimally debulked vs stage III suboptimally debulked vs stage IV) and Eastern Cooperative Oncology Group performance status (0 vs 1 or 2).
Results:
Of randomized patients, 51 received bevacizumab + CP and 49 received placebo + CP. Median PFS was 22.6 months with bevacizumab + CP (95% confidence interval [CI]=18.6, not estimable) and 12.3 months (95% CI=9.5, 15.0) with placebo + CP (stratified hazard ratio=0.30; 95% CI=0.17, 0.53). Treatment-related grade 3/4 adverse events occurred in 46 of 49 (94%) patients receiving bevacizumab + CP, and 34 of 50 (68%) receiving placebo + CP.
Conclusion
Bevacizumab + CP showed clinically meaningful improvement in PFS vs placebo + CP, consistent with GOG-0218 results. Safety data were aligned with the known bevacizumab safety profile. These results support first-line bevacizumab + CP therapy in Chinese patients with ovarian cancer.
7.First-line bevacizumab plus chemotherapy in Chinese patients with stage III/IV epithelial ovarian cancer, fallopian tube cancer or primary peritoneal cancer: a phase III randomized controlled trial
Xiaohua WU ; Jihong LIU ; Ruifang AN ; Rutie YIN ; Yu ZHANG ; Huaijun ZHOU ; Aiqin HE ; Li WANG ; Jieqing ZHANG ; Ziling LIU ; Wei DUAN ; Jianqing ZHU ; Ge LOU ; Guilin CHEN ; Ying CHENG ; Fengxia XUE ; Sonja NICK ; Haiyan WANG ; Donghang LI
Journal of Gynecologic Oncology 2024;35(5):e99-
Objective:
First-line bevacizumab plus carboplatin and paclitaxel (CP) is approved for stage III/IV ovarian cancer treatment following initial surgical resection, based on global phase III GOG-0218 and ICON7 trials. This study evaluated the efficacy and safety of bevacizumab + CP as first-line ovarian cancer therapy in Chinese patients.
Methods:
Patients with newly diagnosed, International Federation of Gynecology and Obstetrics (FIGO) stage III/IV epithelial ovarian, fallopian tube, or primary peritoneal cancer post-primary surgery were randomized 1:1 to receive 6 cycles of CP with bevacizumab/ placebo, followed by bevacizumab/placebo maintenance until unacceptable toxicity or disease progression. Primary endpoint was investigator-assessed progression-free survival (PFS). Stratification factors were FIGO stage and debulking status (stage III optimally debulked vs stage III suboptimally debulked vs stage IV) and Eastern Cooperative Oncology Group performance status (0 vs 1 or 2).
Results:
Of randomized patients, 51 received bevacizumab + CP and 49 received placebo + CP. Median PFS was 22.6 months with bevacizumab + CP (95% confidence interval [CI]=18.6, not estimable) and 12.3 months (95% CI=9.5, 15.0) with placebo + CP (stratified hazard ratio=0.30; 95% CI=0.17, 0.53). Treatment-related grade 3/4 adverse events occurred in 46 of 49 (94%) patients receiving bevacizumab + CP, and 34 of 50 (68%) receiving placebo + CP.
Conclusion
Bevacizumab + CP showed clinically meaningful improvement in PFS vs placebo + CP, consistent with GOG-0218 results. Safety data were aligned with the known bevacizumab safety profile. These results support first-line bevacizumab + CP therapy in Chinese patients with ovarian cancer.
8.Mechanism of Buyang Huanwutang in Regulating Macrophage Cell Polarization Based on TLR4/NF-κB/NLRP3 Pathway
Yuting LI ; Zhiqiang LEI ; Yu YOU ; Hongyang ZHU ; Ziling RONG ; Shiyao CHANG ; Yuhui LIU
Chinese Journal of Experimental Traditional Medical Formulae 2023;29(19):18-25
ObjectiveTo explore the mechanism of Buyang Huanwutang in regulating macrophage polarization based on the Toll-like receptor 4 (TLR4) / nuclear factor-κB (NF-κB) / nucleotide-binding oligomerization domain-like receptor 3 (NLRP3) pathway. MethodRAW264.7 macrophages were intervened with lipopolysaccharide (LPS) of different concentrations (0, 1.25, 2.5, 5, 10, 20, 40, and 80 mg·L-1) for 24 hours. Cell Counting Kit-8 (CCK-8) assay was used to determine the cell viability of RAW264.7 macrophages. The optimal concentration was chosen to establish an in vitro inflammation model induced by LPS. Cells were divided into a blank group (20% blank serum), a model group (20% blank serum + 10 mg·L-1 LPS), a model control group (20% FBS + 10 mg·L-1 LPS), low-, medium-, and high-dose (5%, 10%, and 20%) Buyang Huanwutang-containing serum groups, a high-dose (20%) Buyang Huanwutang combined with NLRP3 inhibitor MCC950 (50 μmol·L-1) group, a high-dose (20%) Buyang Huanwutang combined with reactive oxygen species (ROS) inhibitor NAC (10 μmol·L-1) group, and a high-dose (20%) Buyang Huanwutang combined with NF-κB inhibitor PDTC (10 μmol·L-1) group. Enzyme-linked immunosorbent assay (ELISA) was used to detect the expression of interleukin-1β (IL-1β), interleukin-18 (IL-18), and tumor necrosis factor-α (TNF-α) in RAW264.7 macrophages. Flow cytometry was employed to measure ROS levels in macrophages. Western blot was used to determine the protein expression of M1-type macrophage-related factors inducible nitric oxide synthase (iNOS) and TNF-α, M2-type macrophage-related factors arginase-1 (Arg-1) and interleukin-10 (IL-10), as well as the proteins in the TLR4/NF-κB/NLRP3 pathway. ResultCCK-8 results indicated that under 10 mg·L-1 LPS stimulation, RAW264.7 macrophages exhibited the highest cell viability (P<0.01). Compared with the blank group, the model group showed significantly increased levels of IL-1β, IL-18, and TNF-α (P<0.05,P<0.01), increased ROS expression (P<0.05,P<0.01), increased protein expression of M1-type macrophage factors iNOS and TNF-α (P<0.01), decreased protein expression of M2-type macrophage factors Arg-1 and IL-10 (P<0.05,P<0.01), and upregulated expression levels of TLR4, myeloid differentiation factor 88 (MyD88), phosphorylated inhibitor of NF-κB (p-IκB)/NF-κB inhibitor (IκB), phosphorylated NF-κB (p-NF-κB) p65/NF-κB p65, NLRP3, apoptosis-associated speck-like protein containing a CARD (ASC), and pro-Caspase-1 (P<0.05, P<0.01). Compared with the model group, all Buyang Huanwutang-treated groups and inhibitor groups significantly reduced levels of IL-1β, IL-18, and TNF-α (P<0.01), suppressed the expression of inflammatory factors in RAW264.7 macrophages, decreased cellular ROS expression levels (P<0.01), downregulated M1-type macrophages iNOS and TNF-α protein expression (P<0.01), upregulated M2-type macrophages Arg-1 and IL-10 protein expression (P<0.01), and lowered protein expression levels of TLR4, MyD88, p-IκB/IκB, p-NF-κB p65/NF-κB p65, NLRP3, ASC, and pro-Caspase-1 (P<0.05, P<0.01). ConclusionBuyang Huanwutang can improve macrophage inflammation, potentially by reducing macrophage ROS levels, inhibiting RAW264.7 macrophage polarization, and downregulating the protein expression levels of the TLR4/NF-κB/NLRP3 pathway.
9.Coagulation function changes after CD19-CAR-T cells immunotherapy for B-ALL and its related factors
Lan DAI ; Linyan HE ; Ziling ZHU ; Shengli XUE ; Mengjie CAI ; Haixia ZHOU ; Zhaoyue WANG ; Mingqing ZHU
Chinese Journal of Laboratory Medicine 2022;45(8):846-851
Objective:To investigate the changes of various cytokines and coagulation function in B cell acute lymphoblastic leukemia(ALL) patients with different CRS scores during CD19-CAR-T cell immunotherapy.Methods:87 patients with B-ALL hospitalized in the First Affiliated Hospital of Soochow University and 30 normal controls were enrolled into this study from July 2018 to October 2020. The age of the patients was 32(20, 56) years old and 36(41.4%) were female. All these coagulation indicators, prothrombin time (PT), activated partial thromboplastin time (APTT), D-dimer, fibrinogen (Fg) were analyzed by automatic blood coagulation in B-ALL patients before and after treated with CAR-T cell. The ratio of CD19-CAR-T cells and the expression of IL-6, IL-10, IFN-γ, TFN-α, IL-2, IL-4, and IL-17A were analyzed using flow cytometry. The patients′ clinical parameters were detected, and the CRS classification of severity was made according to the standard of consensus.Results:Patients with CRS>3 had prolonged PT and APTT, increased D-dimer, and decreased fibrinogen ( P<0.05). The levels of cytokines of IFN-γ, IL-6, and IL-10 were significantly higher in patients with CRS>3 than that in controls ( P<0.05).The D-dimer level is positively correlated with IL-10. Conclusion:Patients with severe CRS grading have significant coagulation dysfunction in CD19-CAR-T cell immunotherapy. Cytokines IFN-γ, IL-6, and IL-10 may affect coagulation function and CRS grading during CD19-CAR-T cell immunotherapy.
10.Relationship Between Inhibition of High Glucose-induced Macrophage Damage and Regulation of Endoplasmic Reticulum Stress Signaling Pathways by Puerariae Lobatae Radix
Ziling RONG ; Yuhui LIU ; Hongyang ZHU ; Yuting LI ; Ronghua LIU
Chinese Journal of Experimental Traditional Medical Formulae 2022;28(24):58-64
ObjectiveTo observe the effect of the serum containing Puerariae Lobatae Radix on tumor necrosis factor-α (TNF-α), endoplasmic reticulum stress signaling pathway protein endoplasmic reticulum stress protein glucose-regulated protein 78 (GRP78), activated transcription factor 4 (ATF4), protein kinase R-like endoplasmic reticulum kinase (PERK), and eukaryotic translation initiation factors (eIF2α) and on inflammatory injury of macrophages induced by high glucose, and explore its possible mechanism. MethodThe control serum and serum containing Puerariae Lobatae Radix were prepared by serum pharmacology. The RAW264.7 macrophages were cultured in vitro, and 62.5 mmol·L-1 glucose was used to induce macrophages to establish a model of severe endoplasmic reticulum (ER) stress (ERS) in vitro. Different volume fractions of serum containing Puerariae Lobatae Radix and ERS inhibitor (4-PBA) were used to interfere with the cells. Different glucose concentrations (22.5, 23.5, 25.0, 27.5, 32.5, 47.5, 72.5, 122.5 mmol·L-1) and the effect of different volume fractions of serum containing Puerariae Lobatae Radix (0%, 2.5%, 5%, 7.5%, 10%, 15%, 20%) on the survival rate of RAW264.7 macrophages were detected by cell proliferation and cell counting kit-8 (CCK-8) assay. Based on the results of the effect of glucose concentrations on macrophage survival rate by CCK-8, Western blot (WB) was used to determine the protein expression levels of GRP78, the signature protein of ERS, by different concentrations of glucose (22.5, 32.5, 42.5, 52.5, 62.5, 72.5 mmol·L-1) at different time periods (6, 12, 24, 36, 48 h), and the optimal concentration and time for establishing the model of severe ERS were screened out. Based on the above experimental results, the cells were divided into blank group, 62.5 mmol·L-1 glucose model group, 2 mmol·L-1 4-PBA group, and high, medium, and low-dose (15%, 10%, 5%) serum containing Puerariae Lobatae Radix groups for subsequent experiments. The expression of TNF-α in the supernatant of RAW264.7 macrophages in the model of severe ERS was determined by enzyme-linked immunosorbent assay (ELISA). The expressions of related pathway proteins in the model of severe ERS were determined by WB. ResultThe results of CCK-8 assay showed that the survival rate of macrophages reached the highest under the stimulation of glucose concentration of 27.5 mmol·L-1 (P<0.01), while the survival rate of macrophages increased with the concentration increasing from 22.5 mmol·L-1 to 27.5 mmol·L-1. When the glucose concentration was 25.0 mmol·L-1, there was a significant difference (P<0.01), and when the glucose concentration was 37.5 mmol·L-1 to 122.5 mmol·L-1, there was a downward trend. The serum containing Puerariae Lobatae Radix showed significant differences in the volume of 1% to 15% (P<0.05, P<0.01). The results of WB found that the GRP78 protein expression was the most significant at 24 h (P<0.01), and the GRP78 protein expression was the most significant when the glucose concentration was 62.5 mmol·L-1 (P<0.01). Therefore, 62.5 mmol·L-1 of glucose was the optimal concentration to induce the model of severe ERS. As compared with the blank group, the protein expression levels of TNF-α, GRP78, ATF4, phosphorylation(p)-PERK/PERK, p-eIF2α/eIF2α in the model group were significantly increased (P<0.05, P<0.01), and as compared with the model group, the protein expression levels of TNF-α, GRP78, ATF4, p-PERK/PERK, p-eIF2α/eIF2α in each administration group were significantly decreased (P<0.05, P<0.01). ConclusionThe results of in vitro experiments show that Puerariae Lobatae Radix can alleviate the inflammatory injury of macrophages induced by high glucose to a certain extent and restore cell homeostasis by inhibiting the expression of GRP78, ATF4, PERK, and eIF2α in the ERS signaling pathway.

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