1.Shentong Zhuyutang Regulates SIRT1/Nrf2 Pathway to Ameliorate Intervertebral Disc Degeneration in Rats
Jiajun HUANG ; Diyou WU ; Guangyi TAO ; Yu ZHAO ; Junqing HUANG ; Bin YANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(3):29-39
ObjectiveTo study the effect and mechanism of Shentong Zhuyutang in treating intervertebral disc degeneration (IDD) in rats. MethodsIn the cell experiment, male rats were administrated with normal saline or low-, medium-, and high-dose (3.38, 6.75,13.5 g·kg-1, respectively) Shentong Zhuyutang by gavage, respectively, and serum samples were collected after 7 days of continuous administration. Another 10 male rats were selected for the isolation of nucleus pulposus cells. The cell model of IDD was established by treatment with interleukin (IL)-1β. The modeled cells were then treated with Shentong Zhuyutang-containing serum and the ferroptosis inhibitor ferrostatin-1 (Fer-1), respectively, to investigate the effects of Shentong Zhuyutang-containing serum on the proliferation and ferroptosis of nucleus pulposus cells. To study the role of silent information regulator 1 (SIRT1)/nuclear factor erythroid 2-related factor 2 (Nrf2) in the regulation of ferroptosis in nucleus pulposus cells by Shentong Zhuyutang-containing serum, this study treated the cells with the SIRT1 inhibitor Ex 527 and the Nrf2 inhibitor ML385, respectively, in addition to the treatment with IL-1β and high-dose Shentong Zhuyutang-containing serum. The cell-counting kit-8 (CCK-8) assay and EdU staining were employed to measure the cell viability and proliferation, respectively. The Fe2+, glutathione (GSH), and malondiadehyde (MDA) levels were measured by colorimetric assay. Western blot was employed to determine the protein levels of glutathione peroxidase 4 (GPX4), acyl-CoA synthetase long-chain family 4 (ACSL4), Collagen Ⅱ, Aggrecan, SIRT1, and Nrf2. Immunofluorescence was used detect SIRT1 expression. In the animal experiment, male rats were treated with anulus puncture for the modeling of IDD. Rats were randomly assigned into sham operation, model, Shentong Zhuyutang-containing serum (13.5 g·kg-1), and positive control (nimesulide dispersible tablets, 0.18 mg·kg-1) groups. Rats in the drug intervention groups were administrated with corresponding agents at 1 mL·kg-1, and those in the sham operation and model groups were administrated with equal volumes of normal saline, once daily for 28 consecutive days. At the end of the last administration, the histopathological changes in the intervertebral discs of rats were observed by hematoxylin-eosin staining and scored by the Masuda method. Western blot was employed to determine the protein levels of SIRT1, Nrf2, GPX4, and Collagen Ⅱ in the nucleus pulposus tissue. ResultsCompared with the control group, the IL-1β group of nucleus pulposus cells showed elevated levels of Fe2+, MDA, and ACSL4 (P<0.05), decreased cell viability, lowered GSH level, and down-regulated protein levels of GPX4, Collagen Ⅱ, and Aggrecan (P<0.05). Shentong Zhuyutang-containing serum and Fer-1 reversed the effects of IL-1β on the viability and ferroptosis of nucleus pulposus cells and up-regulated the protein levels of Collagen Ⅱ and Aggrecan in nucleus pulposus cells (P<0.05). Compared with the control group, the IL-1β group showcased down-regulated expression of Sirt1 and Nrf2 in nucleus pulposus cells (P<0.05). Compared with the IL-1β group, the high-dose Shentong Zhuyutang-containing serum+IL-1β group showed up-regulated expression of SIRT1 and Nrf2 in nucleus pulposus cells (P<0.05). Compared with the high-dose Shentong Zhuyutang-containing serum+IL-1β group, the ML385 group showed down-regulated protein levels of Nrf2 and GPX4, lowered GSH level, and elevated Fe2+ and MDA levels (P<0.05). In addition, the Ex 527 group showed down-regulated protein levels of SIRT1, Nrf2, and GPX4 (P<0.05). The results of the animal experiment showed that compared with the sham operation group, the model group had severe degeneration of the intervertebral disc tissue with increased pathological score, up-regulated protein level of ACSL4 (P<0.05), and down-regulated protein levels of SIRT1, Nrf2, GPX4, and Collagen Ⅱ (P<0.05). Compared with the model group, the Shentong Zhuyutang group showed alleviated IDD with declined pathological score, down-regulated protein level of ACSL4 (P<0.05), and up-regulated protein levels of SIRT1, Nrf2, GPX4, and Collagen Ⅱ (P<0.05). ConclusionShentong Zhuyutang may activate the SIRT1/Nrf2 signaling pathway to inhibit the ferroptosis of nucleus pulposus cells, thereby delaying the process of IDD in rats.
2.Cyclocarya paliurus Polysaccharide Inhibits Benign Prostatic Hyperplasia by Reducing 5α-Reductase 2
Qinhui DAI ; Mengxia YAN ; Chen WANG ; Chenjun SHEN ; Chenying JIANG ; Bo YANG ; Huajun ZHAO ; Zhihui ZHU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(3):107-114
ObjectiveTo investigate the effect and mechanism of polysaccharide in water extract of Cyclocarya paliurus (CPWP) in inhibiting benign prostatic hyperplasia (BPH). MethodsCPWP was obtained by heating reflux, aqueous extraction, alcohol precipitation, and freeze drying. The chemical composition and structural properties of CPWP were analyzed by high performance liquid chromatography with 1-pheny-3-methyl-5-pyrazolone pre-column derivatization and infrared spectroscopy. Male SD rats were randomly assigned into control, model, finasteride (ig 5 mg·kg-1), and low-, medium-, and high-dose (ig 50, 75, 100 mg·kg-1) CPWP groups, with 8 rats in each group. The BPH model was established by subcutaneously injecting propionate testosterone in castrated rats. The rats in the drug intervention groups were administrated with corresponding drugs, and those in the control group were administrated with an equal volume of normal saline each day. After 30 consecutive days, the rats were sacrificed, and the prostate tissue was separated and weighed. The effects of drug interventions on the body weight, prostate wet weight, and prostate index of rats were examined. The prostate tissue was stained with hematoxylin-eosin (HE) for observation of pathological changes. Enzyme-linked immunosorbent assay was employed to measure the level of dihydrotestosterone (DHT), and immunohistochemical staining was used to detect the expression of steroid 5 alpha-reductase 2 (SRD5A2) and Ki67 in the prostate tissue. ResultsCPWP was identified as a saccharide, with characteristic absorption peaks of saccharides. CPWP showed the total sugar content of 44.15% and molecular weight within the range of 5.5-78.8 kDa, being composed of mannose, rhamnose, galacturonic acid, glucose, galactose, xylose, and arabinose. Compared with the control group, the model group had significantly increased prostate wet weight and prostate index (P<0.01), thick and tall prostate epithelial cells, increased internal wrinkles, papillary expansion into the cavity, an elevation in DHT level in the serum, and up-regulated expression of SRD5A2 and Ki67 in the prostate tissue (P<0.05, P<0.01). Compared with the model group, both the finasteride and CPWP groups showed decreases in prostate wet weight and prostate index (P<0.05, P<0.01), thinned prostate epithelial cells, with only a small portion of internal wrinkles and papillary expansion into the cavity, shortened papillary protrusions, lowered DHT level in the serum, and down-regulated expression of SRD5A2 and Ki67 in the prostate tissue (P<0.01). Moreover, CPWP exerted effects in a dose-dependent manner. ConclusionCPWP inhibits BPH by regulating the expression of SRD5A2.
3.Analyzing Progress and Achievements in Innovative Research of Traditional Chinese Medicine in Past Three Decades from Patent Perspective
Yuan YANG ; Ying LI ; Shuaimei ZHAO ; Bingshao LI
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(3):265-271
This article takes the award-winning traditional Chinese medicine(TCM) patents in the China Patent Award as the breakthrough point to analyze the innovative research progress and achievements of TCM in the past thirty years, such as type of patentees, geographical distribution, technology types, international layout and textual features. The China Patent Award has been selected for 24 sessions so far, with 192 patents awarded for TCM, accounting for 2.3% of the total number of awarded patents. Among the award-winning patents of TCM, the patentees are mainly enterprises, and the active geographic regions of TCM innovation include Guangdong, Shandong, Guangxi, Guizhou, Jiangsu and other provinces. The types of award-winning patents mainly focus on TCM compositions, followed by preparation methods and new applications. The main clinical applications include cardiovascular and cerebrovascular diseases, respiratory system diseases and orthopedic diseases. However, there is still much room for improvement in the international layout, and the quality of text has been steadily improving year by year. Obviously, award-winning patents represent a high level in various aspects, including patent quality, technology advancement, protection strength and social benefits. This article analyzes the overall situation of patent awards in TCM, and discusses the gold award-winning patented technologies, the preparation method of HuoXiang Zhengqi liquid oral preparation(CN911072543) and a method of preparing anti-cancer drug elemene from Curcuma wenyujin(CN200910162658.1), as representative technologies of TCM compounds and extracts, respectively, providing references for future innovation and intellectual property protection related to TCM.
4.Expert consensus on dispensing management of intravenous infusion drugs for clinical trials in PIVAS
Xingchen YANG ; Wenhuan FU ; Donghui LAO ; Jing ZHAO ; Jianzhong ZHANG ; Group PHARMACY ; Committee HOSPITAL ; Association Pharmaceutical SHANGHAI
China Pharmacy 2025;36(1):1-6
OBJECTIVE To further standardize the dispensing management standard of intravenous infusion drugs for clinical trials in pharmacy intravenous admixture services (PIVAS), and provide reference for medical institutions to provide high-quality pharmaceutical services. METHODS Initiated by PIVAS Group, Hospital Pharmacy Professional Committee, Shanghai Pharmaceutical Association, jointly led by Longhua Hospital, Shanghai University of Traditional Chinese Medicine and Shanghai Geriatric Medical Center, a writing group was established by PIVAS experts from multiple medical institutions to discuss the basic requirements and dispensing process of intravenous infusion drugs for clinical trials in PIVAS. The experts from the leading unit sorted out, summarized, analyzed, fed back and revised the opinions, and finally reached Expert Consensus on Dispensing Management of Intravenous Infusion Drugs for Clinical Trials in PIVAS. RESULTS & CONCLUSIONS The main contents of this consensus include information management, operation process, fund management and document management of intravenous infusion drugs for clinical trials in PIVAS. This consensus establishes a more standardized model for dispensing management of intravenous infusion drugs for clinical trials in PIVAS, by standardizing clinical trail drug management operational procedures, accurately recording and preserving drug-related information, with the aim of achieving standardized and meticulous management of PIVAS’s receipt of clinical trial drugs.
5.Quality analysis of Pinghuo tea standard decoction
Xinmei ZHAO ; Hongyang SANG ; Chunjing YANG ; Jingwei LEI ; Haiyan GONG ; Caixia XIE ; Chunya ZHANG ; Haohan DUAN ; Hao YU
China Pharmacy 2025;36(1):71-78
OBJECTIVE To establish the fingerprint of Pinghuo tea standard decoction and a method for determination of multi-component to clarify the transfer relationship of quantities and quality from pieces and standard decoction. METHODS Fifteen batches of Pinghuo tea standard decoction were prepared and the extract rate was determined; the fingerprint of the preparation was established by using high-performance liquid chromatography(HPLC); the similarity evaluation and the determination of common peaks were performed, and chemometric analysis was performed; the same method was used to determine the content of indicator components and the transfer rate was calculated. The chromatographic column was Venusil C18 column with mobile phase consisted of acetonitrile-0.1% phosphoric acid solution (gradient elution); the column temperature was 30 ℃, and the detection wavelengths were 238 nm (0-37 min, 85-102 min) and 330 nm (37-85 min) at a flow rate of 1.0 mL/min with an injection volume of 10 μL. RESULTS The similarity of HPLC fingerprints for 15 batches of Pinghuo tea standard decoction was not lower than 0.968. A total of 24 common peaks were calibrated and 9 peaks were recognized, which were as follows neochlorogenic acid (peak 3), chlorogenic acid (peak 6), geniposide (peak 9), glycyrrhizin (peak 10), galuteolin (peak 11), isochlorogenic acid A (peak 14), luteolin (peak 21), kaempferol (peak 23) and glycyrrhizic acid (peak 24). Cluster analysis, principal component analysis and orthogonal partial least squares discriminant analysis showed consistent results, all of which could classify the 15 batches of samples into three categories. The linear range of indicator components in 15 batches of Pinghuo tea standard decoction, such as geniposide, luteolin, isochlorogenic acid A, glycyrrhizin, and glycyrrhizic acid, were 0.020 580-0.411 600, 0.001 617-0.080 850, 0.006 076-0.607 600, 0.005 125-0.071 740, and 0.017 288-0.432 200 mg/mL, respectively; RSDs of precision, repeatability, stability and recovery rate tests were all not higher than 4% (n=6). The mass fractions ranged 3.227 9-10.002 2, 0.297 4-0.554 6, 3.350 1-6.159 6, 0.720 6-1.073 3, 2.003 1-3.030 1 mg/g; transfer rates from the pieces and standard decoction were 19.762 8%-35.840 5%, 12.123 3%-21.254 0%, 46.097 2%-82.869 4%, 58.708 8%-91.629 6%, 39.114 3%-63.710 6%. The transfer rates of the extract from 15 batches of Pinghuo tea standard decoction ranged from 61.15%-84.68%. CONCLUSIONS Established HPLC fingerprint and content determination methods in this study are simple and accurate, which can provide reference for the quantitative value transfer study, quality control, clinical application and the development of subsequent formulations of Pinghuo tea standard decoction.
6.Pharmacoeconomic evaluation of finerenone combined with standard treatment regimen in the treatment of diabetic nephropathy
Hai LIANG ; Runan XIA ; Panpan DI ; Mengmeng ZHAO ; Pengcheng ZHANG ; Yashen HOU ; Hong ZHANG ; Wei WU ; Miao YANG
China Pharmacy 2025;36(1):86-90
OBJECTIVE To evaluate the cost-effectiveness of finerenone combined with standard treatment regimen in the treatment of diabetic nephropathy (DN). METHODS From the perspective of healthcare service providers, a Markov model was established to simulate the dynamic changes of each stage in DN patients who received finerenone combined with the standard treatment regimen or the standard treatment regimen alone based on the phase Ⅲ clinical trial study of finerenone for DN. Markov model was used to perform the cost-effectiveness of long-term effects and the costs of the two therapies with a simulation cycle of 4 months, a simulation period of 15 years and an annual discount rate of 5%. At the same time, one-way sensitivity analysis and probability sensitivity analysis were performed, and the stability of the results was validated. RESULTS Accumulative cost of the standard treatment regimen was 579 329.54 yuan, and the accumulative utility was 8.052 4 quality-adjusted life year (QALYs); the accumulative cost of finerenone combined with the standard treatment regimen was 332 520.61 yuan, and the accumulative utility was 8.187 4 QALYs. Finerenone combined with the standard treatment regimen was more cost-effective. The results of one-way sensitivity analysis showed that dialysis status utility value, DN stage 3 utility value and DN stage 4 utility value had a great influence on the incremental cost-effectiveness ratio, but did not affect the robustness of the model. The results of probability sensitivity analysis showed that finerenone combined with the standard treatment regimen was more cost-effective with 100% probability. CONCLUSIONS For DN patients, finerenone combined with the standard treatment regimen is more cost-effective as an absolute advantage option.
7.Modified Xiehuangsan Regulates Microglial Polarization and TLR4/MyD88/NF-κB Pathway to Treat Tic Disorders in Rats
Mengjie ZHAO ; Qiong ZHAO ; Cuiling YANG ; Hongyun ZHOU ; Xiangjuan SUN ; Xinyi GUO ; Sajiyue HUANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(4):10-18
ObjectiveTo explore the mechanism of modified Xiehuangsan in treating tic disorders (TD) based on microglial polarization and the Toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor (NF)-κB pathway. MethodsSeventy-two Sprague-Dawley (SD) rats were randomly assigned into six groups: control, model, tiapride (0.025 g·kg-1), and low-, medium-, and high-dose (12, 24, 48 g·kg-1, respectively) modified Xiehuangsan, with 12 rats in each group. Except the control group, the other groups received intraperitoneal injection of 3,3'-iminodipropionitrile (IDPN) for 7 consecutive days for the modeling of TD. After successful modeling, the control and model groups were given normal saline via gavage, and the other groups were administrated with corresponding drugs by gavage. After 28 days of continuous intervention, rat behaviors were observed, and the modified Xiehuangsan group showing the best anti-TD effect was selected for deciphering the treatment mechanism. Hematoxylin and eosin staining was conducted to observe morphological changes in the rat striatum. Immunohistochemistry was employed to detect the expression of CD16 and CD206 in the striatum. Real-time PCR was employed to measure the mRNA levels of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), IL-4, TLR4, MyD88, and NF-κB p65 in the striatum. Western blot was employed to determine the protein levels of ionized calcium-binding adapter molecule 1 (Iba1), Fc receptor family for immunoglobulin (Ig)G type Ⅲ (CD16), mannose receptor (CD206), TLR4, MyD88, and NF-κB p65 in the striatum. ResultsCompared with the control group, the model group showed increased stereotyped behaviors, locomotor activity, total movement distance, and movement speed, shortened resting time (P<0.01), and noticeable pathological changes in the striatum. Compared with the model group, the tiapride group and modified Xiehuangsan groups exhibited reduced stereotyped behavior, locomotor activity, total movement distance, and movement speed, prolonged resting time (P<0.05, P<0.01), and alleviated pathological changes in the striatum. Among the modified Xiehuangsan groups, the high-dose group had the best intervention effect and the mildest pathological changes. Therefore, the high-dose group was selected for further research. Compared with the control group, the modeling of TD increased Iba1 and CD16 expression (P<0.05, P<0.01), up-regulated the mRNA levels of IL-1β and TNF-α (P<0.05, P<0.01), down-regulated the mRNA level of IL-4 (P<0.05), up-regulated the mRNA and protein levels of TLR4 and MyD88 (P<0.05, P<0.01), and up-regulated the protein level of NF-κB p65 (P<0.01). Compared with the model group, modified Xiehuangsan reduced Iba1 and CD16 expression (P<0.05, P<0.01), up-regulated the protein level of CD206 (P<0.05, P<0.01), down-regulated the mRNA levels of IL-1β and TNF-α (P<0.05), up-regulated the mRNA level of IL-4 (P<0.01), and down-regulated the mRNA and protein levels of TLR4, MyD88, and NF-κB p65 (P<0.05, P<0.01). ConclusionModified Xiehuangsan demonstrated a definite therapeutic effect on TD in rats. It may reduce neuroinflammation in TD rats by regulating the polarization of microglia in the striatum via the TLR4/MyD88/NF-κB signaling pathway.
8.Effect of the reduction of back optic zone diameters of orthokeratology lenses on corneal higher-order aberrations
Dandan ZHAO ; Yubing ZHAO ; Yang HE ; Shengrong LU ; Yuan YUAN
International Eye Science 2025;25(2):213-219
AIM: To investigate the alterations in corneal aberration and relative refractive power following the reduction of back optic zone diameters(BOZD)of orthokeratology lenses.METHODS: Myopic children aged 8-12 years, deemed suitable and willing to wear orthokeratology lenses, were randomly allocated to wear lenses with a 6.0 mm BOZD or a 5.0 mm BOZD. Data collection included changes in higher-order aberrations, relative refractive power and the treatment zone diameter of the two groups after wearing lenses for 1 d, 1 wk, 1, and 3 mo. The correlation of increase in corneal higher-order aberrations with refractive power was analyzed.RESULTS: The increases in total higher-order aberrations, spherical aberrations and coma aberrations varied over time following lens wear(all P<0.001), and there were no statistically significant differences in the changes of total higher-order aberrations and coma aberrations between the two groups of patients(all P>0.05). A significant difference was observed in the increment of spherical aberrations in the 5 mm range between the two groups of patients, which varied over time(Ftime=40.179, Ptime<0.001; Fgroup=11.948, Pgroup=0.001; Finteraction=3.262, Pinteraction=0.03). A significant difference was observed in the increment of spherical aberrations in the 4 mm range between the two patient groups(Ftime=34.462, Ptime<0.001; Fgroup=13.094, Pgroup<0.001; Finteraction=1.372, Pinteraction=0.25). There was no statistically significant distinction in relative refractive power between the two groups(Fgroup=0.048, Pgroup=0.83; Finteraction=1.208, Pinteraction=0.31); however, relative refractive power changed over time(Ftime=40.030, Ptime<0.001). The difference in treatment zone diameter between the two groups was statistically significant, with changes over time(Ftime=11.212, Ptime<0.001; Fgroup=74.073, Pgroup<0.001; Finteraction=0.312, Pinteraction=0.82). The total higher-order aberrations, spherical aberrations, and coma aberrations in 4, 5 and 6 mm range showed a positive correlation with relative refractive power values(all P<0.001). Statistically significant difference was observed in the axial length between the two groups after wearing lenses for 3, 6 and 12 mo(Ftime=185.398, Ptime<0.001; Fgroup=5.618, Pgroup=0.02; Finteraction=2.315, Pinteraction=0.11).CONCLUSION: Orthokeratology lenses leaded to elevated higher-order aberrations. Orthokeratology lenses with smaller BOZD produced significantly greater spherical aberrations at 4 and 5 mm range and smaller treatment zone diameters. The corneal total higher-order aberration was positively correlated with relative refractive power. Wearing orthokeratology lenses with a smaller BOZD can cause slower axial growth and better myopia control.
9.Role of SWI/SNF Chromatin Remodeling Complex in Tumor Drug Resistance
Gui-Zhen ZHU ; Qiao YE ; Yuan LUO ; Jie PENG ; Lu WANG ; Zhao-Ting YANG ; Feng-Sen DUAN ; Bing-Qian GUO ; Zhu-Song MEI ; Guang-Yun WANG
Progress in Biochemistry and Biophysics 2025;52(1):20-31
Tumor drug resistance is an important problem in the failure of chemotherapy and targeted drug therapy, which is a complex process involving chromatin remodeling. SWI/SNF is one of the most studied ATP-dependent chromatin remodeling complexes in tumorigenesis, which plays an important role in the coordination of chromatin structural stability, gene expression, and post-translation modification. However, its mechanism in tumor drug resistance has not been systematically combed. SWI/SNF can be divided into 3 types according to its subunit composition: BAF, PBAF, and ncBAF. These 3 subtypes all contain two mutually exclusive ATPase catalytic subunits (SMARCA2 or SMARCA4), core subunits (SMARCC1 and SMARCD1), and regulatory subunits (ARID1A, PBRM1, and ACTB, etc.), which can control gene expression by regulating chromatin structure. The change of SWI/SNF complex subunits is one of the important factors of tumor drug resistance and progress. SMARCA4 and ARID1A are the most widely studied subunits in tumor drug resistance. Low expression of SMARCA4 can lead to the deletion of the transcription inhibitor of the BCL2L1 gene in mantle cell lymphoma, which will result in transcription up-regulation and significant resistance to the combination therapy of ibrutinib and venetoclax. Low expression of SMARCA4 and high expression of SMARCA2 can activate the FGFR1-pERK1/2 signaling pathway in ovarian high-grade serous carcinoma cells, which induces the overexpression of anti-apoptosis gene BCL2 and results in carboplatin resistance. SMARCA4 deletion can up-regulate epithelial-mesenchymal transition (EMT) by activating YAP1 gene expression in triple-negative breast cancer. It can also reduce the expression of Ca2+ channel IP3R3 in ovarian and lung cancer, resulting in the transfer of Ca2+ needed to induce apoptosis from endoplasmic reticulum to mitochondria damage. Thus, these two tumors are resistant to cisplatin. It has been found that verteporfin can overcome the drug resistance induced by SMARCA4 deletion. However, this inhibitor has not been applied in clinical practice. Therefore, it is a promising research direction to develop SWI/SNF ATPase targeted drugs with high oral bioavailability to treat patients with tumor resistance induced by low expression or deletion of SMARCA4. ARID1A deletion can activate the expression of ANXA1 protein in HER2+ breast cancer cells or down-regulate the expression of progesterone receptor B protein in endometrial cancer cells. The drug resistance of these two tumor cells to trastuzumab or progesterone is induced by activating AKT pathway. ARID1A deletion in ovarian cancer can increase the expression of MRP2 protein and make it resistant to carboplatin and paclitaxel. ARID1A deletion also can up-regulate the phosphorylation levels of EGFR, ErbB2, and RAF1 oncogene proteins.The ErbB and VEGF pathway are activated and EMT is increased. As a result, lung adenocarcinoma is resistant to epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs). Although great progress has been made in the research on the mechanism of SWI/SNF complex inducing tumor drug resistance, most of the research is still at the protein level. It is necessary to comprehensively and deeply explore the detailed mechanism of drug resistance from gene, transcription, protein, and metabolite levels by using multi-omics techniques, which can provide sufficient theoretical basis for the diagnosis and treatment of poor tumor prognosis caused by mutation or abnormal expression of SWI/SNF subunits in clinical practice.
10.Research on The Role of Dopamine in Regulating Sleep and Wakefulness Through Exercise
Li-Juan HOU ; Ya-Xuan GENG ; Ke LI ; Zhao-Yang HUANG ; Lan-Qun MAO
Progress in Biochemistry and Biophysics 2025;52(1):88-98
Sleep is an instinctive behavior alternating awakening state, sleep entails many active processes occurring at the cellular, circuit and organismal levels. The function of sleep is to restore cellular energy, enhance immunity, promote growth and development, consolidate learning and memory to ensure normal life activities. However, with the increasing of social pressure involved in work and life, the incidence of sleep disorders (SD) is increasing year by year. In the short term, sleep disorders lead to impaired memory and attention; in the longer term, it produces neurological dysfunction or even death. There are many ways to directly or indirectly contribute to sleep disorder and keep the hormones, including pharmacological alternative treatments, light therapy and stimulus control therapy. Exercise is also an effective and healthy therapeutic strategy for improving sleep. The intensities, time periods, and different types of exercise have different health benefits for sleep, which can be found through indicators such as sleep quality, sleep efficiency and total sleep time. So it is more and more important to analyze the mechanism and find effective regulation targets during sleep disorder through exercise. Dopamine (DA) is an important neurotransmitter in the nervous system, which not only participates in action initiation, movement regulation and emotion regulation, but also plays a key role in the steady-state remodeling of sleep-awakening state transition. Appreciable evidence shows that sleep disorder on humans and rodents evokes anomalies in the dopaminergic signaling, which are also implicated in the development of psychiatric illnesses such as schizophrenia or substance abuse. Experiments have shown that DA in different neural pathways plays different regulatory roles in sleep behavior, we found that increasing evidence from rodent studies revealed a role for ventral tegmental area DA neurons in regulating sleep-wake patterns. DA signal transduction and neurotransmitter release patterns have complex interactions with behavioral regulation. In addition, experiments have shown that exercise causes changes in DA homeostasis in the brain, which may regulate sleep through different mechanisms, including cAMP response element binding protein signal transduction, changes in the circadian rhythm of biological clock genes, and interactions with endogenous substances such as adenosine, which affect neuronal structure and play a neuroprotective role. This review aims to introduce the regulatory effects of exercise on sleep disorder, especially the regulatory mechanism of DA in this process. The analysis of intracerebral DA signals also requires support from neurophysiological and chemical techniques. Our laboratory has established and developed an in vivo brain neurochemical analysis platform, which provides support for future research on the regulation of sleep-wake cycles by movement. We hope it can provide theoretical reference for the formulation of exercise prescription for clinical sleep disorder and give some advice to the combined intervention of drugs and exercise.

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