1.Structure and Function of GPR126/ADGRG6
Ting-Ting WU ; Si-Qi JIA ; Shu-Zhu CAO ; De-Xin ZHU ; Guo-Chao TANG ; Zhi-Hua SUN ; Xing-Mei DENG ; Hui ZHANG
Progress in Biochemistry and Biophysics 2025;52(2):299-309
GPR126, also known as ADGRG6, is one of the most deeply studied aGPCRs. Initially, GPR126 was thought to be a receptor associated with muscle development and was primarily expressed in the muscular and skeletal systems. With the deepening of research, it was found that GPR126 is expressed in multiple mammalian tissues and organs, and is involved in many biological processes such as embryonic development, nervous system development, and extracellular matrix interactions. Compared with other aGPCRs proteins, GPR126 has a longer N-terminal domain, which can bind to ligands one-to-one and one-to-many. Its N-terminus contains five domains, a CUB (complement C1r/C1s, Uegf, Bmp1) domain, a PTX (Pentraxin) domain, a SEA (Sperm protein, Enterokinase, and Agrin) domain, a hormone binding (HormR) domain, and a conserved GAIN domain. The GAIN domain has a self-shearing function, which is essential for the maturation, stability, transport and function of aGPCRs. Different SEA domains constitute different GPR126 isomers, which can regulate the activation and closure of downstream signaling pathways through conformational changes. GPR126 has a typical aGPCRs seven-transmembrane helical structure, which can be coupled to Gs and Gi, causing cAMP to up- or down-regulation, mediating transmembrane signaling and participating in the regulation of cell proliferation, differentiation and migration. GPR126 is activated in a tethered-stalk peptide agonism or orthosteric agonism, which is mainly manifested by self-proteolysis or conformational changes in the GAIN domain, which mediates the rapid activation or closure of downstream pathways by tethered agonists. In addition to the tethered short stem peptide activation mode, GPR126 also has another allosteric agonism or tunable agonism mode, which is specifically expressed as the GAIN domain does not have self-shearing function in the physiological state, NTF and CTF always maintain the binding state, and the NTF binds to the ligand to cause conformational changes of the receptor, which somehow transmits signals to the GAIN domain in a spatial structure. The GAIN domain can cause the 7TM domain to produce an activated or inhibited signal for signal transduction, For example, type IV collagen interacts with the CUB and PTX domains of GPR126 to activate GPR126 downstream signal transduction. GPR126 has homology of 51.6%-86.9% among different species, with 10 conserved regions between different species, which can be traced back to the oldest metazoans as well as unicellular animals.In terms of diseases, GPR126 dysfunction involves the pathological process of bone, myelin, embryo and other related diseases, and is also closely related to the occurrence and development of malignant tumors such as breast cancer and colon cancer. However, the biological function of GPR126 in various diseases and its potential as a therapeutic target still needs further research. This paper focuses on the structure, interspecies differences and conservatism, signal transduction and biological functions of GPR126, which provides ideas and references for future research on GPR126.
2.Heterogeneity of Adipose Tissue From a Single-cell Transcriptomics Perspective
Yong-Lang WANG ; Si-Si CHEN ; Qi-Long LI ; Yu GONG ; Xin-Yue DUAN ; Ye-Hui DUAN ; Qiu-Ping GUO ; Feng-Na LI
Progress in Biochemistry and Biophysics 2025;52(4):820-835
Adipose tissue is a critical energy reservoir in animals and humans, with multifaceted roles in endocrine regulation, immune response, and providing mechanical protection. Based on anatomical location and functional characteristics, adipose tissue can be categorized into distinct types, including white adipose tissue (WAT), brown adipose tissue (BAT), beige adipose tissue, and pink adipose tissue. Traditionally, adipose tissue research has centered on its morphological and functional properties as a whole. However, with the advent of single-cell transcriptomics, a new level of complexity in adipose tissue has been unveiled, showing that even under identical conditions, cells of the same type may exhibit significant variation in morphology, structure, function, and gene expression——phenomena collectively referred to as cellular heterogeneity. Single-cell transcriptomics, including techniques like single-cell RNA sequencing (scRNA-seq) and single-nucleus RNA sequencing (snRNA-seq), enables in-depth analysis of the diversity and heterogeneity of adipocytes at the single-cell level. This high-resolution approach has not only deepened our understanding of adipocyte functionality but also facilitated the discovery of previously unidentified cell types and gene expression patterns that may play key roles in adipose tissue function. This review delves into the latest advances in the application of single-cell transcriptomics in elucidating the heterogeneity and diversity within adipose tissue, highlighting how these findings have redefined the understanding of cell subpopulations within different adipose depots. Moreover, the review explores how single-cell transcriptomic technologies have enabled the study of cellular communication pathways and differentiation trajectories among adipose cell subgroups. By mapping these interactions and differentiation processes, researchers gain insights into how distinct cellular subpopulations coordinate within adipose tissues, which is crucial for maintaining tissue homeostasis and function. Understanding these mechanisms is essential, as dysregulation in adipose cell interactions and differentiation underlies a range of metabolic disorders, including obesity and diabetes mellitus type 2. Furthermore, single-cell transcriptomics holds promising implications for identifying therapeutic targets; by pinpointing specific cell types and gene pathways involved in adipose tissue dysfunction, these technologies pave the way for developing targeted interventions aimed at modulating specific adipose subpopulations. In summary, this review provides a comprehensive analysis of the role of single-cell transcriptomic technologies in uncovering the heterogeneity and functional diversity of adipose tissues.
3.Challenges in the study of self-assembled aggregates in decoction of traditional Chinese medicine: A preliminary review
Qi WANG ; Xiao-meng GUO ; Qian-kun NI ; Mei-jing LI ; Rui XU ; Xing-jie LIANG ; Mu-xin GONG
Acta Pharmaceutica Sinica 2024;59(1):94-104
Decoction is the most commonly used dosage form in the clinical treatment of traditional Chinese medicine (TCM). During boiling, the violent movement of various active ingredients in TCM creates molecular forces such as hydrogen bonding,
4.Short-term efficacy of surgical treatment for multiple pulmonary nodules: A retrospective study in a single center
Qi ZHANG ; Ling GUO ; Xin GAO ; Shaohua XIE ; Qiang LI ; Xiang ZHUANG ; Run XIANG
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2024;31(02):255-262
Objective To summarize and analyze the clinical diagnosis, surgical treatment and prognosis of multiple pulmonary nodules (MPNs). Methods The clinical data of lung cancer patients who received surgical treatment in our hospital from 2018 to 2020 were collected. The short-term efficacy of surgical treatment for MPNs was analyzed. Results A total of 97 patients were enrolled, including 30 males and 67 females with an average age of 56.1±10.0 years at onset ill. There were 62 patients with double lesions, 22 patients with three lesions, 4 patients with four lesions, and 9 patients with more than four lesions. A total of 213 lesions were surgically treated, including 88 pure ground-glass nodules, 81 partially solid nodules, and 7 solid nodules. There were 87 simultaneous surgeries and 10 staged surgeries, with an average operation interval of 5.2 months. The pathological combination type included adenocarcinoma-adenocarcinoma in 96 (99.0%) patients, squamous cell carcinoma-squamous cell carcinoma in 1 (1.0%) patient, and no lymph node metastasis was found. The 2-year disease-free survival (DFS) rate was 92.1%, and the overall survival (OS) rate was 100.0%. Univariate analysis showed that high-risk lesion size>2 cm (P=0.316), residual lesions (P=0.782) and pathological combination type (P=0.913) had statistical effect on the 2-year DFS rate. Conclusion MPNs are mainly diagnosed with multiple primary lung cancers, and the pathological combination is mostly adenocarcinoma-adenocarcinoma combination. Imaging examination is of great help to the surgical approach selection, diagnosis and differential diagnosis of MPNs. During the operation, maximal preservation of lung function and complete resection of high-risk nodules should be taken as the principle, and the prognosis is satisfactory.
5.Identification of the effect of cisplatin on the transcriptome of human hepatocellular carcinoma cell lines
Xin GUO ; Mengdie JI ; Qi WANG ; Xueyuan LI ; Yang CHEN
Basic & Clinical Medicine 2024;44(3):352-360
Objective To investigate the effect of cisplatin treatment on the transcriptional level of human liver cancer cells by conducting transcriptome sequencing analysis after treating human liver cancer cell lines with differ-ent concentrations of cisplatin(CDDP).Methods Liver cancer cell lines HepG2 and Huh7 were incubated with cisplatin at different final concentrations of 0,20,50,100 and 200 μmol/L.After 12 hours,cell viability,immuno-fluorescence and RNA-sequencing(RNA-seq)were performed.Differential gene expression analysis(DEG),KEGG pathway analysis,and protein-protein interaction network analysis were conducted.Results Cisplatin de-creased cell viability and increased DNA damage in HepG2,Huh7 cells.Among the genes regulated after cisplatin treatment at different concentrations,59 genes were commonly up-regulated in both HepG2 and Huh7 cells,while 81 genes were commonly down-regulated.The commonly upregulated genes were mainly enriched in cancer initiation and progression pathways.The 81 commonly down-regulated genes were mainly enriched in Rap1 signaling pathway,Ras signaling pathway,signaling pathways regulating pluripotency of stem cells,axon guidance,and cell adhesion-related pathways.Survival analysis of key nodes in the protein-protein interaction network of commonly up-regulated and downregulated genes revealed a significant correlation between high expression of Jun proto-oncogene,AP-1 transcription factor subunit(JUN)and prolonged patient survival and a significant correlation between low ex-pression of growth arrest and DNA damage inducible alpha(GADD45A)and prolonged patient survival.Conclu-sions The study revealed common transcriptional changes in liver cancer cells under cisplatin treatment.Differential expression of JUN and GADD45A is a potential core mechanism to explain drug resistance.This conclusion provides some important prognostic indicators for clinical treatment.
6.Study on Traditional Chinese Medicine Syndrome Characteristics of 1676 Heart Failure Inpatients: A Cross-Sectional Survey Based on Real-World Electronic Medical Record Information
Yi DU ; Zheng LI ; Guanlin YANG ; Shuqi DONG ; Wenshuai HUANG ; Nanxing XIAN ; Puyu GUO ; Jiajie QI ; Bohang CHEN ; Xin XU ; Zhe ZHANG ; Yi YANG
Journal of Traditional Chinese Medicine 2024;65(3):299-307
ObjectiveTo analyse the clinical characteristics of different traditional Chinese medicine (TCM) syndromes in patients with heart failure based on information from electronic medical record. MethodsA cross-sectional study was conducted to collect clinical data of all inpatients with heart failure in the Department of Cardiology, Affiliated Hospital of Liaoning University of Traditional Chinese Medicine from January 1, 2019 to December 31, 2020. A database of clinical TCM data was established to explore the characteristics of clinical data of basic information, syndromes and syndrome element types, and biochemical indexes. The distribution of TCM syndromes and syndrome elements in heart failure patients were also analysed, and the basic information and biochemical indexes of the patients with top 7 different TCM syndrome types were compared. ResultsA total of 1676 inpatients with heart fai-lure were included. The top 7 TCM syndromes of heart failure were syndrome of phlegm turbidity and blood stasis (477 cases, 28.46%), syndrome of qi deficiency and blood stasis (439 cases, 26.19%), syndrome of qi deficiency and blood stasis with water retention (274 cases, 16.35%), syndrome of yang deficiency with water retention (145 cases, 8.65%), syndrome of qi and yin deficiency (104 cases, 6.21%), syndrome of qi and yin deficiency with blood stasis (80 cases, 4.77%), syndrome of heart yang deficiency (59 cases, 3.52%). Among the 1676 patients, 6 syndrome elements accounted for more than 5%. Blood stasis accounted for the highest proportion of TCM syndrome element type (1292 cases, 77.09%), followed by qi deficiency (919 cases, 54.83%), phlegm (498 cases, 29.71%), water retention (434 cases, 25.89%), yang deficiency (215 cases, 12.82%) and yin deficiency (191 cases, 11.40%). Among the 1676 patients, 1308 cases of acute heart failure mainly showed syndrome of phlegm turbidity and blood stasis (386 cases, 29.51%), and 368 of chronic heart fai-lure mainly showed syndrome of qi deficiency and blood stasis (118 cases, 32.07%). Patients with syndrome of phlegm turbidity and blood stasis had the shortest disease duration of 0.3 months, while those with syndrome of heart yang deficiency had the longest disease duration of 15 months. The proportion of syndrome of phlegm turbidity and blood stasis was the highest in patients with heart failure combined with coronary artery disease, the proportion of syndrome of qi deficiency and blood stasis with water retention was the highest in patients with heart failure combined with atrial fibrillation, and the proportion of patients with syndrome of qi deficiency and blood stasis with water retention and syndrome of yang deficiency with water retention in those applying diuretics during the hospital stay was the highest with more than 86%. The different 7 TCM syndromes showed statistically difference in patients with complications including coronary artery disease, old myocardial infarction, atrial fibrillation, pre and post-admission medication usage including intravenous vasodilators, cardiac stimulants, diuretics, and level of blood chloride, blood urea, blood creatinine, blood bicarbonate, blood albumin, and blood total bilirubin (P<0.05). ConclusionThe most common TCM syndromes in patients with heart failure are syndrome of phlegm turbidity and blood stasis and syndrome of qi deficiency and blood stasis. Different TCM syndromes have different characteristics in gender, disease complications, medication before and after admission, and blood indexes.
7.Study on the chemical constituents of triterpenoids in Patrinia villosa Juss.
Qi-guo WU ; Le-yi HUANG ; Zhi CHEN ; Dong-feng LIU ; Yong-li WANG ; Gui-xin CHOU
Acta Pharmaceutica Sinica 2024;59(4):1005-1009
Seven triterpenoids were isolated and purified from the 95% aqueous EtOH extract whole plants of
8.Research on species identification of commercial medicinal and food homology scented herbal tea
Jing SUN ; Zi-yi HUANG ; Si-qi LI ; Yu-fang LI ; Yan HU ; Shi-wen GUO ; Ge HU ; Chuan-pu SHEN ; Fu-rong YANG ; Yu-lin LIN ; Tian-yi XIN ; Xiang-dong PU
Acta Pharmaceutica Sinica 2024;59(9):2612-2624
The adulteration and counterfeiting of herbal ingredients in medicinal and food homology (MFH) have a serious impact on the quality of herbal materials, thereby endangering human health. Compared to pharmaceutical drugs, health products derived from traditional Chinese medicine (TCM) are more easily accessible and closely integrated into consumers' daily life. However, the authentication of the authenticity of TCM ingredients in MFH has not received sufficient attention. The lack of clear standards emphasizes the necessity of conducting systematic research in this area. This study utilized DNA barcoding technology, combining ITS2,
9.Effects of Needle Retention Time for Scalp Acupuncture on Motor Dysfunction and Serum C-Reactive Protein,Blood Glucose and Blood Lipid of Post-Stroke Patients
Qi ZHONG ; Hai-Yan CAI ; Bing-Xu JIN ; Zhan-Xin HUO ; Hui-Yi LUO ; Qiu-Xia ZHONG ; Hao-Xun GUO ; Jia-Wen CHEN ; Shu-Hui ZOU
Journal of Guangzhou University of Traditional Chinese Medicine 2024;41(6):1510-1516
Objective To observe the improvement of motor dysfunction and serum levels of C-reactive protein(CRP),blood glucose and blood lipid in post-stroke patients treated with scalp acupuncture at different needle retention time.Methods A total of 120 patients with motor dysfunction after stroke were randomly divided into control group,observation group 1 and observation group 2,with 40 cases in each group.The patients in the 3 groups were treated with scalp acupuncture,body acupuncture and routine rehabilitation exercise,once a day and 6 times a week,lasting for 2 weeks.The control group was given scalp acupuncture with retaining of needles for 30 minutes,the observation group 1 was given scalp acupuncture with retaining of needles for one hour,and the observation group 2 was given scalp acupuncture with retaining of needles for 2 hours.Before and after treatment,the 3 groups were observed in the changes of the scale scores of National Institutes of Health Stroke Scale(NIHSS),Fugl-Meyer Assessment(FM A),Berg Balance Scale(BBS)and modified Barthel Index(MBI),and the levels of laboratory indicators of peripheral blood CRP,fasting plasma glucose(FPG),total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C)and low-density lipoprotein cholesterol(LDL-C).After treatment,the clinical safety of the three groups was evaluated.Results(1)After treatment,the scale scores of NIHSS in the three groups were lower(P<0.01)and the scale scores FMA,BBS and MBI were higher than those before treatment(P<0.05 or P<0.01).The comparison of post-treatment scale scores showed that the differences among the three groups were statistically significant(P<0.01).The intergroup comparison showed that the decrease of NIHSS score and the increase of FMA,BBS and MBI scores in the observation group 2 were significantly superior to those in the control group and the observation group 1(P<0.01);the improvement of FMA score in the observation group 1 was significantly superior to that in the control group(P<0.01),while the improvement of NIHSS,BBS and MBI scores tended to be superior to that in the control group without statistically significant differences(P>0.05).The results indicated that the curative effect of scalp acupuncture plus exercise regimen was positively correlated with the duration of needle retention for scalp acupuncture.(2)After treatment,the laboratory indicator levels of CRP and FPG in the peripheral blood of the three groups,the levels of TG and LDL-C in the two observation groups and the level of HDL-C in the observation group 2 were improved compared with those before treatment(P<0.05 or P<0.01).Statistically significant differences were presented in the post-treatment levels of CRP and TG in peripheral blood among the three groups(P<0.05 or P<0.01).The intergroup comparison showed that the improvement of CRP and TG levels in the observation group 2 was significantly superior to that in the control group,and the improvement of CRP level in the observation group 2 was significantly superior to that in the observation group 1,the differences being statistically significant(P<0.05 or P<0.01).The TC level in the three groups after treatment did not differ from that before treatment,and there was no significant difference in TC level after treatment among the three groups either(P>0.05).(3)During the treatment,no adverse reactions such as fainting,needle breaking and hematoma occurred in the three groups,the vital signs of the patients were stable,and there were no obvious abnormal changes in pulse,blood pressure and respiratory rate.Conclusion Scalp acupuncture can effectively improve the motor function of post-stroke patients in a pasitive time-effect relationship with the needle retention,and better the curative effect can be achieved by retaining of the needle for 2 h.
10.The status and its influencing factors of tissue silence of nurses in 3 Grade A general hospitals
Ni XIAO ; Xuan ZHAO ; Jiajia MA ; Yifan QI ; Minna WANG ; Xin XING ; Yongxing WU ; Litao GUO
Modern Clinical Nursing 2024;23(7):17-23
Objective To investigate the status quo and its influencing factors of nurses'organizational silence in 3 Grade A general hospitals.Methods Convenient sampling method was used to investigate clinical nurses in 3 Grade A general hospitals in Xi'an from April to August 2023 by general data questionnaire,nurses'organizational silence questionnaire and hospital magnetic factor scale.Multiple linear regression was used to analyze the influencing factors of organizational silence.Results A total of 855 nurses completed the study.The total silence score of nurses was(56.33±8.55);The total score of hospital magnetic level was(107.63±12.85).There was a negative correlation between nurse tissue silence and hospital magnetic level(r=-0.318,P<0.01).Hospital magnetic level,age,job title and working time were the influential factors of nurses'organizational silence(all P<0.001),which together explained 62.60%of the variation.Conclusions The silence of nurses'tissue and the level of hospital magnetism are in the low-medium level.Nurses are younger in age,lower in professional title,shorter in nursing age and lower in hospital magnetism level,the higher the tissue age level is,the nursing managers can reduce the tissue silence of nurses by improving the hospital magnetism level.

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