1.Interventional Effect and Mechanisms of Renqing Mangjue on MNNG-induced Malignant Transformation of Gastric Mucosal Epithelial Cells
Peiping CHEN ; Fengyu HUANG ; Xinzhuo ZHANG ; Xiangying KONG ; Ziqing XIAO ; Yanxi LI ; Xiaohui SU ; Na LIN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(8):69-77
ObjectiveThis study aimed to investigate the intervention effect of Renqing Mangjue on the malignant transformation of gastric mucosal epithelial cells induced by N-methyl-N′-nitro-N-nitrosoguanidine (MNNG) and to explore its molecular mechanism in preventing precancerous lesions of gastric cancer based on the cyclic guanosine monophosphate (cGMP)/protein kinase G (PKG)/mitogen-activated protein kinase (MEK)/extracellular signal-regulated kinase (ERK) signaling pathway. MethodsHuman gastric mucosal epithelial cells (GES-1) were initially induced by MNNG to establish a precancerous cell model (MC cells). The effective concentration of MNNG for inducing malignant transformation in GES-1 cells was screened using the cell proliferation activity decection (CCK-8) assay, and the effective concentration of Renqing Mangjue for inhibiting the proliferation of transformed GES-1 cells was also determined. GES-1 cells were divided into a blank control group, a model group, and treatment groups with Renqing Mangjue at concentrations of 1, 3, 10, and 30 mg·L-1. Furthermore, the effects of Renqing Mangjue on the migratory ability and epithelial-mesenchymal transition (EMT) characteristics of GES-1 malignant transformed cells were evaluated using Transwell migration assays, wound healing assays, and real-time quantitative reverse transcription polymerase chain reaction (Real-time PCR). Additionally, candidate chemical components and target sites of Renqing Mangjue were obtained from the TCMIP v2.0 database, and disease targets at various stages of gastric cancer precursors were sourced from the Gene Expression Omnibus (GEO) database. Pathway enrichment analysis was performed using the Metascape database to predict the potential mechanisms of action of Renqing Mangjue. Finally, the protective mechanism of Renqing Mangjue against gastric cancer precursors was validated through Western blot analysis. ResultsAt a concentration of 20 μmol·L-1, MNNG exhibited an inhibition rate of approximately 50% on GES-1 cells (P<0.01), and at this concentration, the GES-1 cells displayed biological characteristics indicative of malignant transformation. In contrast, Renqing Mangjue had no significant effect on the proliferation of normal GES-1 cells, but significantly inhibited the proliferation of MC cells (P<0.01) and markedly reduced their migratory capacity (P<0.01). Moreover, it also increased the mRNA expression level of E-cadherin during the EMT process (P<0.05), while inhibiting the expression of both N-cadherin and the transcription factor Snail mRNA (P<0.05, P<0.01). Network predictions suggested that Renqing Mangjue may prevent gastric cancer precursors through modulating the cGMP/PKG and MAPK/ERK signaling pathways. Furthermore, Western blot results indicated that Renqing Mangjue upregulated the expression of PKG and NPRB (B-type natriuretic peptide receptor) proteins in the cGMP/PKG pathway (P<0.01), while downregulating the expression of the downstream proteins MEK and ERK (P<0.05, P<0.01). ConclusionIn summary, Renqing Mangjue can prevent gastric cancer precursors by inhibiting the proliferation and migration of malignant transformed GES-1 cells, thereby delaying the EMT process. The underlying mechanisms may be related to the activation of the cGMP/PKG pathway and the inhibition of the MEK/ERK signaling pathway.
2.Research progress of acetylation in the pathogenesis of MASLD
Li YAN ; Fengyu JU ; Xin SHEN ; Ye YU ; Wenhui WANG
Journal of China Pharmaceutical University 2025;56(1):31-39
Metabolic dysfunction-associated steatotic liver disease (MASLD) is the most prevalent cause of chronic liver disease worldwide, and its intricate pathogenesis presents challenges in the development of new drugs. As a common way of post-translational modification, acetylation regulates protein stability, enzyme activity, and subcellular localization, occurring extensively in MASLD-associated processes such as lipid metabolism, inflammatory response, and oxidative stress. In this paper, we comprehensively review the mechanism of acetylation in MASLD, analyze the expression levels of acetylases in liver tissues of MASLD patients from the gene expression omnibus (GEO), discuss the changes in relevant enzyme expression and mechanisms in animal models, and further explore the feasibility of targeting acetylation for MASLD treatment, in the hope of offering a new perspective for advancing drug discovery in the field of MASLD.
3.Neuronal intranuclear inclusion disease with peripheral neuropathy as the initial symptom: A pedigree analysis and literature review
Journal of Apoplexy and Nervous Diseases 2025;42(7):646-651
Objective To summarize the diagnosis and treatment of neuronal intranuclear inclusion disease (NIID) with peripheral neuropathy as the initial symptom in a Han Chinese family, and to improve the clinical awareness of this disease through a literature review. Methods A pedigree investigation was performed for a patient with NIID who was admitted to the outpatient service of Department of Neurology, Henan Provincial People’s Hospital, in January 2023, and the clinical and imaging features of the family members were summarized. Various techniques, such as second-generation whole-exome sequencing, third-generation whole-genome sequencing, and PCR capillary electrophoresis, were used for genetic analysis, and a family lineage map was plotted. A literature review was performed to summarize the features of cases with peripheral neuropathy as the initial symptom. Results There were 3 generations and 16 members in this family, among whom 5 had clinical manifestations, 8 underwent blood sampling, and 3 were found to have a GCC repeat expansion mutation in the 5' non-coding region of the NOTCH2NLC gene. The proband was aged 39 years, with the initial symptom of weakness in the extremities, and cranial MRI did not show the characteristic signal of NIID, while electromyography suggested multiple peripheral nerve injuries in the extremities. Genetic testing showed that the proband, his aunt, and his cousin all had a GGC repeat expansion mutation in the NOTCH2NLC gene, with a number of more than 60 repeats (154,144,and 148,respectively). Conclusion In hereditary peripheral neuropathy, the possibility of NIID should be considered in case of negative results for common pathogenic genes. In addition, third-generation sequencing has a marked diagnostic value in repeat expansion mutation-related disorders.
4.Protective Effect of Bushen Zhuyun Prescription on Abortion Rats with Kidney Deficiency-Corpus Luteum Inhibition Syndrome via ERα/PI3K/Akt Signaling Pathwa
Changyue SONG ; Siyu LI ; Fengyu HUANG ; Mingzhu QI ; Daiyue DING ; Shuangfei DENG ; Heqiao LI ; Jinghong XIE ; Guohua WANG ; Chen ZANG ; Hong XU ; Xiaohui SU ; Xiangying KONG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(24):107-116
ObjectiveTo investigate the protective effects and mechanisms of Bushen Zhuyun prescription (BSZY) on abortion rats with kidney deficiency-corpus luteum inhibition syndrome. MethodsAn abortion rat model with kidney deficiency-corpus luteum inhibition syndrome was constructed. Pregnant mice aged 8-10 weeks were randomly divided into a control group (Control), a model group (Model), low-dose BSZY (BSZY-L), medium-dose BSZY (BSZY-M), and high-dose BSZY (BSZY-H) groups (2.57, 5.14, 10.28 g·kg-¹), and a Zishen Yutai Pill (ZSYT) group (1.575 g·kg-¹). Hematoxylin-eosin (HE) staining was used to evaluate histopathological changes in ovarian and decidual tissue of rats in each group. Enzyme-linked immunosorbent assay (ELISA) was employed to measure levels of estrogen (E₂), progesterone (P), luteinizing hormone (LH), prolactin (PRL), and follicle-stimulating hormone (FSH) in serum. The candidate targets of BSZY were obtained from the Traditional Chinese Medicine System Pharmacology Platform (TCMSP) and Integrative Pharmacology-based Research Platform of Traditional Chinese Medicine (TCMIP) v2.0 databases, while disease targets for recurrent spontaneous abortion (RSA) were retrieved from GeneCards, DrugBank, Online Mendelian Inheritance in Man (OMIM), and Therapeutic Target Database (TTD). The intersection targets were identified by the Venny 2.1.0 platform. Pathway enrichment analysis was conducted based on the Metascape database to predict the potential mechanisms of BSZY. Additionally. Western blot was used to verify the effects of BSZY on the expression of estrogen receptor (ERα), phosphatidylinositol 3-kinase (PI3K), and protein kinase B (Akt) and explore its protective mechanism on RSA rats. ResultsCompared with the control group, the model group exhibited significantly decreased uterine, ovarian, and embryonic wet weights (P<0.05, P<0.01), with an abortion rate of 57.18%. The ovarian tissue showed varying degrees of reduction in primordial follicles, primary follicles, mature follicles, and corpora lutea, along with a large number of atretic follicles. The endometrium was thinner, and decidual tissue exhibited cellular edema and disorganized arrangement. In contrast, compared with the model group, the BSZY groups at all doses and the ZSYT group demonstrated increased uterine, ovarian, and embryonic wet weights, along with a reduced abortion rate. The number of primordial follicles, primary follicles, mature follicles, and corpora lutea increased, while atretic follicles decreased. The endometrium thickened, and decidual tissue displayed normal cellular structure with tight arrangement. Additionally, the model group showed significantly decreased levels of E₂, P, PRL, and FSH in serum (P<0.05, P<0.01), along with a decreasing trend in LH level. In contrast, the BSZY groups at all doses exhibited significantly elevated levels of E₂, P, LH, PRL, and FSH in serum (P<0.05, P<0.01). Network pharmacology predictions suggested that BSZY may exert protective effects against abortion in rats by activating the ERα/PI3K/Akt signaling pathway. Western blot results confirmed that BSZY significantly upregulated the expression of ERα, PI3K, and p-Akt proteins (P<0.05, P<0.01). ConclusionBSZY has a protective effect on the abortion rats with kidney deficiency-corpus luteum inhibition syndrome, possibly by activating the ERα/PI3K/Akt signaling pathway to reduce ovarian apoptosis and regulate endocrine function, thereby lowering the abortion rate.
5.Protective effects of electroacupuncture and transcutaneous electrical acupoint stimulation during pregnancy on maternal and fetal immune activation induced by infection and neuropsychological behavior of offspring.
Li GONG ; Fengyu LV ; Zhenzhen WU ; Yongjun CHEN ; Yucen XIA
Chinese Acupuncture & Moxibustion 2025;45(12):1777-1788
OBJECTIVE:
To compare the protective effects of electroacupuncture (EA) and transcutaneous electrical acupoint stimulation (TEAS) during pregnancy on maternal immune activation (MIA)-induced adverse pregnancy outcomes, fetal developmental defects, and neuropsychological behavior abnormalities in offspring mice.
METHODS:
Eighty pregnant C57BL/6 mice were randomly divided into 5 groups: control, model, EA, TEAS, and sham-stimulation groups, 16 mice in each group. MIA models were replicated on the day 12.5 of pregnancy via tail intravenous injection with polyinosinic-polycytidylic acid. On the second day of modeling success, in the EA and TEAS groups, the interventions were delivered at bilateral "Zusanli" (ST36), with a frequency of 2 Hz, a current of 0.5 mA, and for 20 min each day in the pregnant mice; and the interventions lasted 6 days. Body mass and fertility indexes of pregnant mice, and the development indexes of offspring mice were recorded. Liquid phase suspension chip technology was used to detect the levels of cytokines and chemotactic factors in the serum of pregnant mice and and fetal brain of offspring mice. Flow cytometry was adopted to detect the proportion of the subgroups and subtypes of spleen T lymphocytes and macrophages in pregnant mice. Using the open field test, prepulse inhibition (PPI) test and Morris water maze, the spatial learning and memory were assessed in offspring mice. Immunofluorescence staining was used to detect microglial count in the medial prefrontal cortex (mPFC) in offspring mice.
RESULTS:
Compared with the control group, the model group showed a reduced body mass of pregnancy mice (P<0.01), smaller litter size and fewer live births (P<0.01, P<0.05), the increase in dead birth and the decrease in offspring survival rate (P<0.05, P<0.01). When compared with model group, in the EA group and the TEAS group, the body mass of pregnancy mice rose (P<0.05), litter size and live births increased (P<0.05, P<0.01), the dead birth was reduced and the offspring survival rate higher (P<0.05). In comparison with the control group, the model group showed the increase in the levels of monocyte chemotactic protein-1 (MCP-1), interleukin-6 (IL-6), γ-interferon (IFN-γ) in the serum of pregnant mice, and spleen M1 macrophage proportion (P<0.01, P<0.05), and the decrease in spleen M2 macrophages of pregnant mice (P<0.01); and the increase in MCP-1 and IL-6 in fetal brain of offspring mice (P<0.05). Compared with the model group, the EA group and the TEAS group showed the decrease in MCP-1, IL-6 and IFN-γ, and spleen M1 macrophage proportion (P<0.01, P<0.05), and the increase in spleen M2 macrophages of pregnant mice (P<0.01, P<0.05) ; and the decrease in MCP-1 and IL-6 in fetal brain of offspring mice (P<0.05). Compared with the control group, in the model group, the total movement distance, escape incubation were extended (P<0.05, P<0.01), the frequency of entering the central area and crossing the platform decreased, and the activity duration in central area was shortened (P<0.05, P<0.01), the average speed rose (P<0.05), PPI%, the percentage of target quadrant swimming time in the total time and that of target quadrant swimming distance in the total distance were reduced (P<0.05, P<0.01) in offspring mice. When compared with the model group, in the EA group and TEAS group, the total movement distance and escape incubation were shortened, the average speed was reduced (P<0.05), PPI% and the frequency of crossing the platform increased (P<0.05, P<0.01); the percentage of target quadrant swimming time in the total time and that of target quadrant swimming distance in the total distance rose (P<0.05, P<0.01) in the offspring mice. In the EA group, the frequency of entering the central area and the activity duration in central area were higher (P<0.05, P<0.01); and in the the TEAS group, the activity duration in central area were longer (P<0.05). When compared with the control group, in the model group, microglial count in mPFC was elevated in offspring mice (P<0.05). In comparison with the model group, the EA group and the TEAS group showed the decrease of microglial count in mPFC (P<0.05).
CONCLUSION
EA and TEAS at "Zusanli" (ST36) during pregnancy effectively improve in the pregnancy outcomes and fetal brain developmental abnormalities induced by infection, and attenuate neurodevelopmental defects and mental disorders of offspring mice through inhibiting inflammatory activation of microglia in mPFC.
Animals
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Female
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Pregnancy
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Electroacupuncture
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Acupuncture Points
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Mice
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Mice, Inbred C57BL
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Humans
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Male
6.Application of artificial intelligence in laboratory hematology: Advances, challenges, and prospects.
Hongyan LIAO ; Feng ZHANG ; Fengyu CHEN ; Yifei LI ; Yanrui SUN ; Darcée D SLOBODA ; Qin ZHENG ; Binwu YING ; Tony HU
Acta Pharmaceutica Sinica B 2025;15(11):5702-5733
The diagnosis of hematological disorders is currently established from the combined results of different tests, including those assessing morphology (M), immunophenotype (I), cytogenetics (C), and molecular biology (M) (collectively known as the MICM classification). In this workflow, most of the results are interpreted manually (i.e., by a human, without automation), which is expertise-dependent, labor-intensive, time-consuming, and with inherent interobserver variability. Also, with advances in instruments and technologies, the data is gaining higher dimensionality and throughput, making additional challenges for manual analysis. Recently, artificial intelligence (AI) has emerged as a promising tool in clinical hematology to ensure timely diagnosis, precise risk stratification, and treatment success. In this review, we summarize the current advances, limitations, and challenges of AI models and raise potential strategies for improving their performance in each sector of the MICM pipeline. Finally, we share perspectives, highlight future directions, and call for extensive interdisciplinary cooperation to perfect AI with wise human-level strategies and promote its integration into the clinical workflow.
7.Effect of silencing DDX39A gene on proliferation,migration and invasion of esophageal cancer TE-1 cells and its mechanism
Pengli WU ; Fengyu LI ; Bo LIU ; Yang LYU
Journal of Jilin University(Medicine Edition) 2025;51(1):115-123
Objective:To discuss the effect of DEAD-box RNA helicase 39A(DDX39A)gene silencing on the proliferation,migration and invasion of the esophageal cancer TE-1 cells,and to clarify its possible mechanism.Methods:For bioinformatics analysis,GSE63941,GSE77861,GSE20347,and GSE16153 chip data were downloaded from the GEO database.The esophagel cancer-related data were selected from the TCGA Database.R software was used to analyze the differentially expressed genes.STRING Database was used to construct the protein-protein interaction(PPI)network.Identification of key genes of high relevance was achieved using the MCODE plugin in Cytoscape.The expression of key genes in normal esophageal tissue and esophageal cancer tissue were analyzed with the GEPIA 2 database.Kaplan-Meier Plotter was used to perform survived analysis and plotting for the screened key genes.Cytological experiments were carried out on esophageal cancer TE-1 cells,and small interfering RNA(siRNA)technology was used to silence the expression of DDX39A gene.The TE-1 cells in the logarithmic growth phase were selected and divided into blank(MOCK)group,negative control(si-NC)group,and silencing(si-DDX39A)group.Real-time fluorescence quantitative PCR(RT-qPCR)and Western blotting methods were used to detect the expression levels of DDX39A mRNA and protein in the TE-1 cells in various groups;CCK-8 assay was conducted to detect the proliferation activity of cells in various groups,and the cell scratch assay was used to measure the migration rate of cells in various groups;Transwell chamber assay was used to detect the number of invasion cells in various groups;Western blotting method was used to detect the expression levels of β-catenin,glycogen synthase kinase-3β(GSK3β),phosphorylated glycogen synthase kinase-3β(p-GSK3β),c-MYC,Cyclin D1 and nuclear β-catenin proteins in the cells in various groups.Results:Analyses using TCGA database combined with the GEO Database yielded a total of 56 differentially expressed genes.MCODE plugin in Cytoscape software identified 41 key genes of high relevance;DDX39A was screened by analyzing 41 genes through the GEPIA 2 and Kaplan-Meier plotter Databases.The results of RT-qPCR and Western blotting methods showed that compared with si-NC group,the expression levels of DDX39A mRNA and protein in the cells in si-DDX39A group were decreased(P<0.05).The CCK-8 results showed that the proliferation activity of the cells in si-DDX39A group was lower than that in si-NC group(P<0.05).The cell scratch assay results showed that the cell migration rate in si-DDX39A group after 24 h was lower than that in si-NC group(P<0.05).The results of Transwell chamber assay showed that the number of invasion cells in si-DDX39A group was lower than that in si-NC group(P<0.05).Compared with si-NC group,the expression levels of β-catenin,p-GSK3β,c-MYC,Cyclin D1,and nuclear β-catenin in the TE-1 cells in si-DDX39A-1 group and si-DDX39A-3 group were decreased(P<0.01),but the expression levels of GSK3β protein had no significant differences(P>0.05).Conclusion:Silencing of DDX39A gene could inhibit the proliferation,migration and invasion of TE-1 cells,and the mechanism may be related to the regulation of Wnt/β-catenin signaling pathway.
8.Clinical efficacy evaluation of unilateral and bilateral puncture vertebral body shaping in the treatment of osteoporotic vertebral compression fractures
Kejun LI ; Yemei ZHANG ; Youyu LI ; Jiangfeng SONG ; Fengyu MA
International Journal of Surgery 2025;52(5):319-325
Objective:To compare the clinical efficacy of unilateral puncture and bilateral puncture vertebroplasty in osteoporotic compression fracture patients.Methods:A regression comparative analysis was performed using case-control study to collect clinical data of 372 patients with osteoporosis compression fractures admitted to Juxian People′s Hospital from January 2022 to July 2023, including 213 males and 159 females, and the age was (59.8±6.2) years old, aged range of 50 to 70 years old. 194 patients treated with unilateral puncture vertebroplasty were included in the unilateral group, and 178 patients treated with bilateral puncture vertebroplasty were included in the bilateral group. The intraoperative indicators, vertebral changes before surgery and 6 months after surgery, and the occurrence of adverse reactions after surgery of the two groups of patients were compared. The visual analogue scale (VAS), activities of daily living (ADL) score, oswestry disability index (ODI), and quality of life (QOL) scale were used to compare the pain degree, activity ability, improvement of functional disability, and changes in quality of life and clinical efficacy of the two groups of patients before the operation and at 3 and 6 months after the operation. SPSS 21.0 software was conducted to analyze data. Measurement data with normal distribution were represented as mean±standard deviation( ± s), and the comparison between groups was conducted using the t-test. The comparison of count data were represented as n(%) and was conducted by χ2 test or Fisher exact probability. Between-group comparisons of different time intervals were performed with repeated-measures analysis of variance test. Results:The surgical time, cement dosage, bleeding amount, and fluoroscopy of patients in the unilateral group were (29.86±5.87) min, (2.58±0.37) mL, (22.65±4.83) mL, and 12 times, respectively, and (42.63±4.55) min, (7.12±0.61) mL, (50.31±5.84) mL, 25 times in the bilateral group, respectively. The difference between the two groups was statistically significant ( P<0.05). Preoperatively, the anterior height ratio of the vertebral body, sagittal concavity angle, and kyphosis angle of the affected vertebra in the unilateral group were (59.83±5.55)%, 13.04°±1.14°, and 18.93°±2.56°, respectively, while in the bilateral group, there were (60.28±5.79)%, 13.08°±1.13°, and 18.67°±2.69°, respectively. After the operation, the unilateral group were (90.20±5.52), 3.95°±0.57°, and 11.03°±1.21°, respectively. The bilateral group were (90.58±6.00), 3.99°±0.59°, and 10.91°±1.14°, respectively. Comparison of data before and after surgery between the two groups, the difference was statistically significant ( P<0.05). The overall complication rate of unilateral group was 13 cases (6.70%), and the overall complication rate of bilateral group was 26 cases (14.61%). The difference between the two groups was statistically significant ( P=0.013). The VAS, ADL, ODI, and QOL of the unilateral group were (3.49±1.10), (66.10±13.02), (18.22±4.81) and (62.10±10.00) points, the two-sided groups were (5.49±1.13), (56.19±10.27), (24.76±5.81) and (52.13±9.56) points, respectively. The differences between the two groups were statistical significance ( P<0.05), the overall treatment efficiency of patients in the unilateral group was 90.72%, and the overall treatment efficiency of patients in the bilateral group was 83.15%, and the difference between the two groups was statistically significant( P<0.05). Conclusions:Unilateral puncture vertebroplasty has the advantages of short operation time, less bone cement usage, low blood loss, fewer fluoroscopy times, low complication rate, better postoperative pain relief and functional recovery, and high overall treatment efficiency in the treatment of patients with osteoporotic compression fractures. It has obvious advantages over bilateral puncture vertebroplasty.
9.Multiple antibodies against-E,-c,-M,and-S:a case report
Wa GAO ; Bing LI ; Fengyu BAN ; Qiushi WANG
Chinese Journal of Blood Transfusion 2024;37(5):511-515,533
Objective To identify antibody specificity in an elderly patient with hydronephrosis accompanied by ureter-al stones and shock who had multiple antibodies.Methods Microcolumn gel method was used to screen unexpected anti-bodies of red blood cells and identify antibodies.Enzyme method and antibody absorption method were used to help judge the specificity of antibodies in patients.The ABO blood type,Rh blood type and MNS blood type of patient were determined by saline tube method.Results The patient′s blood types were O,CCDee,NNss,and a combination of anti-E,anti-c,anti-M and anti-S antibodies was detected.Conclusion Repeated blood transfusion may lead to the presence of one or more un-expected antibodies in patients.Patients with multiple or high-frequency antibodies may experience difficulties in identifica-tion and delayed blood use.
10.Spatiotemporal expression specificity analysis of Duchenne/Becker muscular dystrophy caused by DMD gene c.2622+2T>C variant
Liyu ZHANG ; Fengyu CHE ; Guoxia WANG ; Benchang LI ; Lidangzhi MO ; Ying YANG
Chinese Journal of Neuroanatomy 2024;40(2):153-161
Objective:To analyze the gene variants of a patient affected with Duchenne/Becker muscular dystrophy in a pedigree and further explore the genotype-phenotype correlation for providing basis for family genetic counseling.Methods:The clinical features and family history of family members were collected.Multiplex ligation-dependent probe amplification(MLPA)was utilized to detect copy number variation of target genes.The pathogenic variations were ana-lyzed by whole exome sequencing(WES).The suspected gene variations were verified by Sanger sequencing.For the splice site mutations,mini-gene was constructed and expressed in vitro to detect the number of transcript and cDNA se-quence.Results:The proband of this family is a male,with no obvious involvement of the lower limbs.Laboratory tests showed an elevated level of creatine kinase(CK)in peripheral blood(700-1600 U/L),and electromyography showed myogenic damage.MLPA did not detect pathogenic exon copy number variation in dystrophin(DMD)gene.Genetic testing showed the proband carried a maternal hemizygotic splicing variation of DMD gene(NM_004006.2):c.2622+2T>C.An in vitro mini-gene splicing assay confirmed that this splicing mutation could affect RNA splicing.According to clinical features and genetic testing results,the proband was speculated first proof of Duchenne/Becker muscular dys-trophy(DMD/BMD)caused by DMD gene mutation.Conclusion:This study identified the pathogenic variation of a proband with DMD/BMD of DMD gene,which enriched the variation spectrum of DMD/BMD in China.It was con-firmed that the splicing variation of the DMD gene c.2622+2T>C can produce multiple transcripts leading to different functional impairments,and based on the specificity of temporal and spatial expression,it corresponded to the mild clin-ical manifestations of the patient,providing some reference value for the correlation between genotype and phenotype.

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