1.Assessing High-density Y-SNP Panels for Paternal Haplogroup Assignment in Forensic Practice
De-Qin ZHANG ; Chun-Nian WANG ; Lin-Lin LOU ; Meng NI ; Jing GAO ; Jiang HUANG ; Li JIANG
Progress in Biochemistry and Biophysics 2026;53(2):458-469
ObjectiveThe accuracy of Y-chromosome haplogroup assignment is crucial for tracing paternal lineage in male samples. With the advancement of high-throughput sequencing technologies, high-density Y-SNP genotyping from whole-genome or array-based data has become a standard method for determiningY-chromosome haplogroups. This study systematically evaluated the performance of 4 commonly used high-density SNP genotyping systems—namely, the Global Screening Array (GSA), Chinese Genotyping Array (CGA), Affymetrix array, and the 1240K capture panel—for haplogroup assignment. This work provides a reference for data comparison across different systems. MethodsWe extracted genotype data for the 4 Y-SNP panels from 30× whole-genome sequencing (WGS) data of 1 590 male samples from the 1000 Genomes Project. Additionally, GSA array genotype data from 384 relative pairs (spanning 1st- to 12th-degree relationships) from 109 Chinese Han families were collected. Haplogroup assignment was performed using Y-LineageTracker v1.3.0 software. We assessed the concordance and resolution of haplogroup assignments between the four Y-SNP panels and the WGS data. The consistency and resolution of haplogroup assignments were also evaluated for both the 1000 Genomes Project samples and the 109 family samples collected in this study. Furthermore, the impact of varying numbers of Y-SNPs on haplogroup assignment was examined. ResultsThe GSA and CGA panels demonstrated superior resolution and discrimination of haplogroup subclades compared with the other two panels. The haplogroup assignments from the GSA, CGA, and 1240K panels showed high concordance with WGS data, with consistency rates exceeding 88.70%, whereas the Affymetrix platform exhibited a significantly lower consistency rate of 61.89%. Specifically, the GSA and CGA panels consistently demonstrated superior performance compared with the other two panels in the assignment of haplogroups O-M175 and H-L901, achieving complete concordance (100%) for both haplogroups. In contrast, the Affymetrix panel erroneously assigned all individuals belonging to haplogroup O-M175 to haplogroup K2-M526. Furthermore, its accuracy for haplogroup H-L901 was exceedingly low, at merely 1.41%. This poor performance was characterized by the misassignment of 98.59% of H-L901 samples—specifically, 1.41% to J-M304 and a predominant 97.18% to F-M89. For haplogroup R-M207, all four panels exhibited uniformly high levels of consistency, with concordance values exceeding 94.00%. Notably, for haplogroup E-M96, the 1240K and Affymetrix panels outperformed the GSA and CGA panels in terms of concordance, representing the first instance in which these two panels surpassed the latter. Conversely, for haplogroups J-M304, Q-M242, and I-M170, all 4 panels showed relatively elevated misclassification rates, with the Affymetrix array demonstrating the poorest overall performance. None of the four panels showed any discordant haplogroup assignments among the familial relative pairs analyzed. A positive correlation was observed between the number of Y-SNPs (ranging from 1 000 to 10 000) and classification consistency; however, classification consistency plateaued when the number of Y-SNPs exceeded 10 000. Furthermore, a random sampling analysis conducted on the GSA and CGA panels demonstrated that the haplogroup misclassification rate exhibited negligible fluctuation across the Y-SNP range of 500 to 1 000. Conversely, a marked enhancement in classification consistency was observed as the number of markers increased from 1 000 to 5 000, ultimately reaching a plateau within the interval of 5 000 to 8 000 markers. ConclusionThese findings indicate that the GSA and CGA panels provide high resolution and concordance, delivering reliable Y-haplogroup assignment for forensic investigations.
2.Assessing High-density Y-SNP Panels for Paternal Haplogroup Assignment in Forensic Practice
De-Qin ZHANG ; Chun-Nian WANG ; Lin-Lin LOU ; Meng NI ; Jing GAO ; Jiang HUANG ; Li JIANG
Progress in Biochemistry and Biophysics 2026;53(2):458-469
ObjectiveThe accuracy of Y-chromosome haplogroup assignment is crucial for tracing paternal lineage in male samples. With the advancement of high-throughput sequencing technologies, high-density Y-SNP genotyping from whole-genome or array-based data has become a standard method for determiningY-chromosome haplogroups. This study systematically evaluated the performance of 4 commonly used high-density SNP genotyping systems—namely, the Global Screening Array (GSA), Chinese Genotyping Array (CGA), Affymetrix array, and the 1240K capture panel—for haplogroup assignment. This work provides a reference for data comparison across different systems. MethodsWe extracted genotype data for the 4 Y-SNP panels from 30× whole-genome sequencing (WGS) data of 1 590 male samples from the 1000 Genomes Project. Additionally, GSA array genotype data from 384 relative pairs (spanning 1st- to 12th-degree relationships) from 109 Chinese Han families were collected. Haplogroup assignment was performed using Y-LineageTracker v1.3.0 software. We assessed the concordance and resolution of haplogroup assignments between the four Y-SNP panels and the WGS data. The consistency and resolution of haplogroup assignments were also evaluated for both the 1000 Genomes Project samples and the 109 family samples collected in this study. Furthermore, the impact of varying numbers of Y-SNPs on haplogroup assignment was examined. ResultsThe GSA and CGA panels demonstrated superior resolution and discrimination of haplogroup subclades compared with the other two panels. The haplogroup assignments from the GSA, CGA, and 1240K panels showed high concordance with WGS data, with consistency rates exceeding 88.70%, whereas the Affymetrix platform exhibited a significantly lower consistency rate of 61.89%. Specifically, the GSA and CGA panels consistently demonstrated superior performance compared with the other two panels in the assignment of haplogroups O-M175 and H-L901, achieving complete concordance (100%) for both haplogroups. In contrast, the Affymetrix panel erroneously assigned all individuals belonging to haplogroup O-M175 to haplogroup K2-M526. Furthermore, its accuracy for haplogroup H-L901 was exceedingly low, at merely 1.41%. This poor performance was characterized by the misassignment of 98.59% of H-L901 samples—specifically, 1.41% to J-M304 and a predominant 97.18% to F-M89. For haplogroup R-M207, all four panels exhibited uniformly high levels of consistency, with concordance values exceeding 94.00%. Notably, for haplogroup E-M96, the 1240K and Affymetrix panels outperformed the GSA and CGA panels in terms of concordance, representing the first instance in which these two panels surpassed the latter. Conversely, for haplogroups J-M304, Q-M242, and I-M170, all 4 panels showed relatively elevated misclassification rates, with the Affymetrix array demonstrating the poorest overall performance. None of the four panels showed any discordant haplogroup assignments among the familial relative pairs analyzed. A positive correlation was observed between the number of Y-SNPs (ranging from 1 000 to 10 000) and classification consistency; however, classification consistency plateaued when the number of Y-SNPs exceeded 10 000. Furthermore, a random sampling analysis conducted on the GSA and CGA panels demonstrated that the haplogroup misclassification rate exhibited negligible fluctuation across the Y-SNP range of 500 to 1 000. Conversely, a marked enhancement in classification consistency was observed as the number of markers increased from 1 000 to 5 000, ultimately reaching a plateau within the interval of 5 000 to 8 000 markers. ConclusionThese findings indicate that the GSA and CGA panels provide high resolution and concordance, delivering reliable Y-haplogroup assignment for forensic investigations.
3.Construction and Application of "Source-Pivot-Convergence" Pattern Identification and Treatment Model for Malignant Tumors
Yuling JIANG ; Jiawei HE ; Yang ZHONG ; Chunxia HUANG ; Qiong MA ; Chuan ZHENG ; Xi FU ; Fengming YOU
Journal of Traditional Chinese Medicine 2026;67(9):956-960
Based on LI Gao's Academic Thought, focusing on the process of qi transformation and taking the regulation and restoration of metabolism and immunity as the entry point, a "source-pivot-convergence" diagnostic and therapeutic model for malignant tumors is constructed. In this model, spleen and stomach internal injury is the source of malignant tumor occurrence, while the disorder of ascending and descending is the pivot of the disease development, and the generation of yin fire is the convergence of malignant tumor progression. Based on this, the three major therapeutic methods of clearing the source, harmonizing the pivot, and resolving the convergence are established. To fortify spleen and boost qi, consolidate the root and clear the source, modified Buzhong Yiqi Decoction(补中益气汤)can be used. To raise the clear and direct the turbid downward, regulate qi and harmonize the pivot, modified Shengyang Yiwei Decoction (升阳益胃汤) is suggested. To restore balance and promote circulation, disperse accumulation and resolve convergence, modified Shengyang Sanhuo Decoction (升阳散火汤) is selected. In clinical practice, these formulas can be used in combination according to the complexity of the pathogenesis, and further adapted with prescriptions for promoting dispersion and penetrating pathogenic factors, resolving phlegm and promoting circulation, activating blood and eliminating concretions, which can provide a reference for the prevention and treatment of tumor diseases.
4.Construction and Application of "Source-Pivot-Convergence" Pattern Identification and Treatment Model for Malignant Tumors
Yuling JIANG ; Jiawei HE ; Yang ZHONG ; Chunxia HUANG ; Qiong MA ; Chuan ZHENG ; Xi FU ; Fengming YOU
Journal of Traditional Chinese Medicine 2026;67(9):956-960
Based on LI Gao's Academic Thought, focusing on the process of qi transformation and taking the regulation and restoration of metabolism and immunity as the entry point, a "source-pivot-convergence" diagnostic and therapeutic model for malignant tumors is constructed. In this model, spleen and stomach internal injury is the source of malignant tumor occurrence, while the disorder of ascending and descending is the pivot of the disease development, and the generation of yin fire is the convergence of malignant tumor progression. Based on this, the three major therapeutic methods of clearing the source, harmonizing the pivot, and resolving the convergence are established. To fortify spleen and boost qi, consolidate the root and clear the source, modified Buzhong Yiqi Decoction(补中益气汤)can be used. To raise the clear and direct the turbid downward, regulate qi and harmonize the pivot, modified Shengyang Yiwei Decoction (升阳益胃汤) is suggested. To restore balance and promote circulation, disperse accumulation and resolve convergence, modified Shengyang Sanhuo Decoction (升阳散火汤) is selected. In clinical practice, these formulas can be used in combination according to the complexity of the pathogenesis, and further adapted with prescriptions for promoting dispersion and penetrating pathogenic factors, resolving phlegm and promoting circulation, activating blood and eliminating concretions, which can provide a reference for the prevention and treatment of tumor diseases.
5.Liuwei Dihuangwan Promote Mitophagy to Modulate Neuroinflammation and Behavioral Impairments in Rat Model of Autism Spectrum Disorder (ASD)
Pengjue HUANG ; Mingyue JIANG ; Ji WU ; Niya YIN ; Lei OUYANG ; Qinquan ZHU ; Di ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(2):52-60
ObjectiveTo observe the effect of Liuwei Dihuangwan on behavioral impairments in the rat model of autism spectrum disorder (ASD) and explore the mechanism of action. MethodsTwelve SD pregnant rats were intraperitoneally injected with valproic acid (VPA) (10 rats) or normal saline (2 rats), and male offspring were selected to establish the model of ASD and the control rats. Rats were randomly assigned into model, low-dose (0.75 g·kg-1) and high-dose (1.5 g·kg-1) Liuwei Dihuangwan, vitamin D (positive drug, 3.7×10-5 g·kg-1), and blank groups. Each group was administrated with the corresponding concentration of drugs or the same volume of normal saline by gavage for 2 weeks. After the intervention, the three-chamber social test was conducted to evaluate social interaction and social preference. The open field test was carried out to observe spontaneous behavior and anxiety state. Hematoxylin-eosin staining (HE) was used to observe the pathological changes of the prefrontal tissue. Transmission electron microscopy was employed to observe the ultrastructure of mitochondria in prefrontal neurons. Immunofluorescence was used to detect the expression of ionized calcium-binding adapter molecule-1 (Iba-1) in the prefrontal tissue. Enzyme-linked immunosorbent assay (ELISA) was adopted to measure the levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6). Western blot was employed to assess the expression differences of phosphorylated adenosine monophosphate-activated protein kinase (p-AMPK), adenosine monophosphate-activated protein kinase (AMPK), phosphorylated Unc-51-like autophagy-activating kinase 1 (p-ULK1), Unc-51-like autophagy-activating kinase 1 (ULK1), and FUN14 domain-containing protein 1 (FUNDC1). ResultsCompared with the blank group, the model group spent less time sniffing stranger 1 and stranger 2 in the three-chamber social test (P<0.01) and showed reductions in the total distance traveled, average speed, distance traveled in the central area, and time spent in the central area in the open field test (P<0.01). In addition, the model group showed extensive apoptosis of neurons, with shrunken nuclei and red-stained cytoplasm, and extensive necrosis of neurons in the prefrontal tissue, mitochondrial swelling, decreased matrix density, disrupted cristae, and autophagic lysosomes in neurons, increases in the rate of Iba-1 positive cells in the prefrontal area (P<0.01) and the levels of TNF-α and IL-6 (P<0.01), and down-regulation in the expression of p-AMPK/AMPK, p-ULK1/ULK1, and FUNDC1 (P<0.01). Compared with the model group, low-dose and high-dose Liuwei Dihuangwan and the vitamin D prolonged the time spent sniffing stranger 1 and stranger 2 in the three-chamber social test (P<0.05, P<0.01), increased the total distance traveled, average speed, distance traveled in the central area, and time spent in the central area in the open field test (P<0.05, P<0.01), restored the morphology of neurons in the prefrontal tissue, decreased the number of apoptotic cells, alleviated the swelling of mitochondria in neurons, increased the matrix density, mitigated the fragmentation and disorder of cristae, and increased the number of autophagosomes. Moreover, the drugs decreased the rate of Iba-1 positive cells in the prefrontal area (P<0.01), lowered the levels of TNF-α and IL-6 (P<0.01), and up-regulated the expression of p-AMPK/AMPK, p-ULK1/ULK1, and FUNDC1 (P<0.01). ConclusionLiuwei Dihuangwan ameliorate autism-like behaviors and reduce neuronal apoptosis and neuroinflammatory damage in the rat model of ASD by promoting mitophagy mediated by the AMPK/ULK1/FUNDC1 pathway.
6.Mechanism prediction and verification of Xihuang pill against diffuse large B-cell lymphoma
Ruyi HUANG ; Jinyu LI ; Wenqi LIN ; Xin JIANG ; Yanling CHEN ; Weikun HUANG ; Lin YANG
China Pharmacy 2026;37(2):161-167
OBJECTIVE To investigate the mechanism of Xihuang pill (XHP) against diffuse large B-cell lymphoma (DLBCL). METHODS The active ingredients of XHP and potential therapeutic targets for DLBCL were identified using TCMSP, GeneCards and DisGeNET databases. Protein-protein interaction networks were constructed using the String database and Cytoscape software to screen core components and core targets. Gene ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses were then performed. The clinical relevance of core targets was analyzed using the GEPIA and PanCanSurvPlot databases. Molecular docking and molecular dynamics (MD) simulation were conducted to verify the interactions between core components and core targets, and the binding free energy was calculated using the molecular mechanics Poisson-Boltzmann surface area (MM-PBSA) method. The effects of XHP on DLBCL and the related molecular mechanisms were validated using CCK-8 assay, flow cytometry and Western blot. RESULTS Network pharmacology analysis identified 108 active ingredients of XHP and 410 potential therapeutic targets for DLBCL. Six core components (e.g., 17 beta-estradiol, quercetin) and ten core targets [e.g., tumor protein 53 (TP53), proto-oncogene tyrosine-protein kinase Src (SRC)] were obtained. Enrichment analysis indicated that the anti-DLBCL effects of XHP were primarily associated with the apoptotic signaling pathway, the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway and so on. Clinical correlation analysis revealed that TP53 and SRC expression were significantly up-regulated in DLBCL tissues and associated with poor patient prognosis (P<0.05). Molecular docking, MD simulations and MM-PBSA calculations confirmed that the SRC-quercetin complex had a mail:stronger and more stable binding affinity. In vitro experiments demonstrated that XHP concentration-dependently inhibited the proliferation of DLBCL cells; compared with control group, XHP medium- and high-dose groups could significantly induce the apoptosis of SU-DHL2 and SU-DHL4 cells, and significantly down- regulated the expressions of SRC protein, phosphorylated (p)-PI3K/PI3K and p-Akt/Akt in SU-DHL4 cells (P<0.05). CONCLUSIONS XHP may inhibit the proliferation and induce the apoptosis of DLBCL cells by regulating the SRC/PI3K/Akt signaling pathway.
7.Association of vegetables and fruits intake with depressive symptoms in Yunnan multi ethnic first year junior high school students
CHEN Yiyao*, DU Yeming, YIN Wan, HUANG Jianhong, LIU Zihan, JIANG Yinghong, YU Qiaoying, PAN Lijuan, XU Honglü ;
Chinese Journal of School Health 2026;47(1):32-36
Objective:
To explore the association of vegetables and fruits intake with depressive symptoms among multi ethnic first year junior high school students in Yunnan Province, so as to provide data support for preventing and reducing depressive symptoms among first year junior high school students.
Methods:
From October to December 2022, a cluster random sampling method was used to select 8 500 first year junior high school students from 11 ethnic minority areas in Yunnan Province (Fugong County, Longling County, Longyang District, Luchun County, Mojiang County, Nanjian County, Qiaojia County, Shuangjiang County, Tengchong City, Yuanmou County, Zhenyuan County), to investigate with a questionnaire. The Dietary Frequency Questionnaire was used to collect dietary behavior datas, and the Chinese version of Depression Anxiety Stress Scale-21 (DASS-21) was used to assess depressive symptoms. The generalized linear model was used to analyze the association of vegetable and fruit intake with depressive symptoms in students, and stratified analysis was performed according to ethnicity.
Results:
The detection rate of depressive symptoms among first year junior high school students in Yunnan Province was 29.5%. The detection rates of depressive symptoms in Han and minority first year junior high school students were 26.9% and 31.6%. After controlling for demographic variables such as gender, age, family residence and other confounding factors, the generalized linear model analysis results showed that the intake of leafy vegetables ( β= -0.07 , 95%CI =-0.12 to -0.01), flat fruits ( β=-0.06, 95%CI =-0.12 to -0.00) and hot natured fruits ( β=0.11, 95%CI = 0.04- 0.17) were associated with depressive symptoms in Han first year junior high school students (all P <0.05). The intake of melon and fruit vegetables ( β=-0.06, 95%CI =-0.11 to -0.01) and hot natured fruits ( β=0.06, 95%CI =0.01-0.12) were associated with depressive symptoms in ethnic minority first year junior high school students (both P <0.05).
Conclusions
The intake of vegetables and fruits among multi ethnic first year junior high school students in Yunnan Province is related to the risk of depressive symptoms. It is suggested to strengthen the consumption guidance and education of vegetables and fruits to prevent depressive symptoms among first year junior high school students.
8.Interventional Effect of Active Ingredients of Chinese Medicine and Compound Formulas on Epithelial-mesenchymal Transition in Lung Cancer: A Review
Shanshan SONG ; Min JIANG ; Xinxin LIU ; Bozhen HUANG ; Siyi MA ; Guoyu WANG ; Wanqing WANG ; Luyao WANG ; Liang WANG ; Ruiqing BO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(6):336-346
Lung cancer is the leading cause of cancer-related deaths worldwide, and tumor metastasis is a key factor contributing to the mortality of most lung cancer patients. Aberrant activation of epithelial-mesenchymal transition (EMT) is a major driver of lung cancer progression and metastasis. EMT is characterized by the loss of apical-basal polarity and intercellular adhesion in highly differentiated, polarized, and organized epithelial cells, which acquire motility, migratory potential, and invasive properties. During this process, cells undergo cytoskeletal remodeling and transform into a mesenchymal phenotype, accompanied by associated changes in cellular markers. The EMT process is highly complex and is tightly regulated by intricate networks involving multiple transcription factors, post-translational controls, epigenetic modifications, and non-coding RNAs. Therefore, therapies targeting the mechanisms of malignant transformation and their associated pathways in lung cancer are of significant clinical importance. In recent years, EMT has attracted increasing attention as a potential target for cancer therapy. Chinese medicine, with its characteristics of multi-target action, low side effects, and good therapeutic efficacy, has demonstrated an important role in anticancer treatment. A series of studies have investigated the role of Chinese medicine in inhibiting EMT in lung cancer. Active ingredients of Chinese medicine, including flavonoids, glycosides, phenols, terpenoids, saccharides, and alkaloids, as well as Chinese medicine compound formulas, have shown significant regulatory effects on EMT. Their mechanisms mainly involve multiple pathways, targets, and links, including signaling pathways, exosomes, microRNAs (miRNAs), and the tumor-associated immune microenvironment. This article summarizes the mechanisms by which EMT promotes malignant tumor progression and reviews the current research on how Chinese medicine active ingredients, monomers, and compound formulas inhibit EMT and suppress lung cancer cell migration and invasion. This study is expected to provide comprehensive theoretical information for basic and translational research on lung cancer.
9.Molecular Mechanisms of Salvia Miltiorrhiza and Its Active Ingredients against Colorectal Cancer: A Review
Jianing GUO ; Xiaochen NI ; Kaiyuan ZHANG ; Wei FAN ; Chuhang WANG ; Chao XU ; Jianbo HUANG ; Tao JIANG ; Guangji ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(4):307-314
Colorectal cancer (CRC) is one of the most common cancers, with its incidence ranking high among cancers. It stands as the second leading cause of cancer-related death worldwide. In the early stages, CRC lacks specific symptoms, and most patients are diagnosed at advanced stages, making it a major research focus in the field of gastrointestinal tumors. Currently, clinical CRC treatments face several common challenges, including high surgical risks, frequent metastasis and recurrence, drug resistance, and significant side effects from chemotherapy and radiation therapy. With the development and application of traditional Chinese medicine (TCM), it has been found that TCM and its active ingredients can effectively inhibit CRC cell proliferation, invasion, migration, and angiogenesis, and promote apoptosis and autophagy, thereby slowing the progression of CRC. This has become a key focus of CRC treatment research. Salvia Miltiorrhiza has multiple pharmacological effects, including activating blood circulation to dispel blood stasis, unlocking meridians to relieve pain, clearing heat to calm irritability, and cooling blood to reduce abscesses. It contains a variety of chemical components, including diterpenoids, phenolic acids, flavonoids, polysaccharides, nitrogen-containing compounds, steroids, and lactone compounds. This review summarized the molecular mechanisms of Salvia miltiorrhiza and its active ingredients in the treatment of CRC. It is found that these ingredients exert anti-CRC effects through various molecular mechanisms, including cell cycle arrest, promotion of apoptosis, inhibition of cell invasion and migration, induction of autophagy, suppression of tumor angiogenesis, and remodeling of the tumor microenvironment. The review aims to provide new insights for the drug development and clinical application of Salvia miltiorrhiza in CRC treatment.
10.Regulation of Rat Intervertebral Disc Annulus Fibrosus Cell Proliferation and Apoptosis by Yaoshu Zhuyu Fang via miR-17-5P/MDM2/p53 Pathway
Haitao JIANG ; Hantao YUAN ; Wenting HUANG ; Rongrong YANG ; Xiaochun CHEN ; Baoqing YU ; Sibo LI
Laboratory Animal and Comparative Medicine 2026;46(1):55-65
ObjectiveTo investigate the effect of Yaoshu Zhuyu Fang on the regulation of the microRNA-17-5P (miR-17-5P)/murine double minute 2 (MDM2)/p53 axis in the proliferation and apoptosis of rat intervertebral disc annulus fibrosus cells, and its potential molecular mechanism. MethodsIntervertebral disc annulus fibrosus tissues were obtained from 8-week-old SPF-grade male SD rats, and annulus fibrosus cells were isolated and obtained by enzyme digestion and mechanical dispersion. Annulus fibrosus cells were divided into 6 groups: Group C was the blank control group, in which annulus fibrosus cells were not treated with interleukin-1β (IL-1β) but were cultured in RPMI 1640 complete medium. Group β was the degeneration model group constructed by treating annulus fibrosus cells with 10 ng/mL IL-1β for 24 h. Group β+B was the IL-1β + blank serum group, in which annulus fibrosus cells were first treated with IL-1β to construct the degeneration model, then treated with RPMI 1640 medium containing 5% blank serum for 24 h. Group β+W was the IL-1β + Yaoshu Zhuyu Fang-containing serum group, in which annulus fibrosus cells were first treated with IL-1β to construct the degeneration model, then treated with RPMI 1640 medium containing 5% Yaoshu Zhuyu Fang-containing serum for 24 h. Group β+I was the IL-1β + miR-17-5P inhibitor group, in which annulus fibrosus cells were first treated with IL-1β to construct the degeneration model, then transfected with miR-17-5P inhibitor. Group β+I+W was the IL-1β + miR-17-5P inhibitor + Yaoshu Zhuyu Fang-containing serum group, in which annulus fibrosus cells were first treated with IL-1β to construct the degeneration model, then transfected with miR-17-5P inhibitor, and finally treated with RPMI 1640 medium containing 5% Yaoshu Zhuyu Fang-containing serum for 24 h. CCK-8 assay was used to detect cell survival rate. Flow cytometry was used to detect cell apoptosis. Real-time quantitative PCR was used to detect the expression levels of miR-17-5P, MDM2 mRNA, and p53 mRNA in cells. Western blotting was used to detect the protein expression levels of MDM2 and p53 in cells. Dual-luciferase reporter system was used to analyze the targeting relationship between miR-17-5P and MDM2. ResultsCompared with Group C, Group β showed a significant decrease in cell survival rate (P<0.001), a significant increase in cell apoptosis rate (P<0.001), significantly increased expression of miR-17-5P, p53 mRNA, and p53 protein (P<0.001), and significantly decreased expression of MDM2 mRNA and protein (P<0.001). Compared with Group β, Group β+W, Group β+I, and Group β+I+W showed significantly increased cell survival rate, significantly decreased apoptosis rate, significantly decreased expression of miR-17-5P, p53 mRNA, and p53 protein, and significantly increased expression of MDM2 mRNA and protein (P<0.001). Moreover, changes in the above indicators were greater in Group β+I+W (P<0.001). Circular RNA Interactome predicted that miR-17-5P had specific binding sites with the 3' untranslated region (3'UTR) of MDM2. Transfection of miR-17-5P mimic significantly reduced the luciferase expression level of co-transfected luciferase reporter plasmid containing wild-type MDM2 3'UTR (P<0.05), but had no significant effect on luciferase expression in cells co-transfected with luciferase reporter plasmid containing mutant MDM2 3'UTR (P>0.05). ConclusionYaoshu Zhuyu Fang down-regulates the expression of miR-17-5P, promotes the synthesis of MDM2 protein, thereby down-regulates p53, promotes proliferation, and inhibits the apoptosis of rat intervertebral disc annulus fibrosus cells.


Result Analysis
Print
Save
E-mail