1.Development and Application of RNA-cleaving Deoxyribozyme Catalytic Amplification in MicroRNA Biosensors
Shu-Ji WANG ; Ru-Fei CAO ; Xiao-Lei DUAN
Chinese Journal of Biochemistry and Molecular Biology 2024;40(7):889-896
MicroRNAs(miRNAs)are small non-coding RNAs that are closely associated with the occur-rence and progression of tumors and other diseases.However,miRNAs require high-sensitivity and high-specificity detection due to their low abundance,high sequence homology,and rapid degradation.The RNA-cleaving deoxyribozyme(RCD)is a functional single-stranded DNA molecule that enables specific cleavage of substrates to release miRNAs that can be recycled with the assistance of metal ions,prompting cyclic signal amplification.Recently,developing new methods based on RCD catalytic amplification for miRNA high-sensitivity detection has become the focus of researchers.Based on combing with the various new technologies and materials in miRNA biosensors,this study classifies and reviews the new methods for detecting miRNAs based on deoxyribozyme catalytic amplification developed in recent years.We sepa-rate these miRNA detection strategies into three categories:RCDs combined with DNA self-assembly,i-sothermal amplification,and nanomaterials.We explore the basic principles of each approach,the latest research advancements,and application scenarios in biomedical sensors and medical detection.This re-view provides a foundation and reference for further research of highly sensitive and accurate miRNA de-tection strategies.
2.Emerging role of Jumonji domain-containing protein D3 in inflammatory diseases
Li XIANG ; Chen RU-YI ; Shi JIN-JIN ; Li CHANG-YUN ; Liu YAN-JUN ; Gao CHANG ; Gao MING-RONG ; Zhang SHUN ; Lu JIAN-FEI ; Cao JIA-FENG ; Yang GUAN-JUN ; Chen JIONG
Journal of Pharmaceutical Analysis 2024;14(9):1282-1300
Jumonji domain-containing protein D3(JMJD3)is a 2-oxoglutarate-dependent dioxygenase that specif-ically removes transcriptional repression marks di-and tri-methylated groups from lysine 27 on histone 3(H3K27me2/3).The erasure of these marks leads to the activation of some associated genes,thereby influencing various biological processes,such as development,differentiation,and immune response.However,comprehensive descriptions regarding the relationship between JMJD3 and inflammation are lacking.Here,we provide a comprehensive overview of JMJD3,including its structure,functions,and involvement in inflammatory pathways.In addition,we summarize the evidence supporting JMJD3's role in several inflammatory diseases,as well as the potential therapeutic applications of JMJD3 inhibitors.Additionally,we also discuss the challenges and opportunities associated with investigating the functions of JMJD3 and developing targeted inhibitors and propose feasible solutions to provide valuable insights into the functional exploration and discovery of potential drugs targeting JMJD3 for inflammatory diseases.
3.The Application of Adeno-asscociated Virus in Lipid Metabolism Research and Lipid-lowering Gene Therapy
Zi-Yang YAN ; Qian-Ru WANG ; Xiao-Fei HUANG ; Chun-Yu CAO
Progress in Biochemistry and Biophysics 2024;51(9):2073-2081
Cardiovascular and cerebrovascular diseases, usually result from atherosclerosis, has the highest mortality rate globally. Lipid metabolism disorder is the main cause of atherosclerotic cardiovascular and cerebrovascular diseases, which not only lead to acute diseases such as myocardial infarction, stroke, acute pancreatitis, but also chronic kidney disease. In recent years, the advancement of gene therapy technologies has provided novel means for lipid metabolism study, and has also made it possible to cure patients with congenital lipid metabolism abnormalities. Adeno-associatd virus has a wide host range, high safety, low immunogenicity, and especially the ability of long-term stable expression in vivo, making it the preferred delivery tool for gene therapy of monogenic genetic diseases. Alipogene triprivec, also known as Glybera, was approved by the European Medicines Agency in 2012. It is the first gene therapy drug that uses recombinant AAV1 vector to directly deliver a highly active LPL protein S447X mutant to muscle cells for the treatment of patients with hereditary LPL deficiency. To enhance the targeted transduction efficiency of AAV carriers, recombinantAAV8.TBG.hLDLR utilizes the tissue tropsim of AAV8 to liver, meanwhile utilizes a liver specific thyroxine binding globulin promoter to control gene transcription, thereby achieving liver cell specific high expressionof human low-density lipoprotein receptors (LDLR). In patients with familial hypercholesterolemia,AAV8.TBG.hLDLR treatment effectively lower the level of plasma LDL for a long time, thus preventing the occurrence of atherosclerosis.Proprotein convert subunit kexin 9 (PCSK9) is secreted by liver cells. PCSK9 binds and transports LDLR to lysosomes for degradation, preventing the circulation and regeneration of LDLR, leading to accelerated degradation of LDLR and finally resulting in the accumulation of low-density lipoprotein cholesterol in plasma. Using AAV to deliver Cas9 of Staphylococcus aureus and gRNA targeting the Pcsk9 gene can knock out Pcsk9 in mouse liver, leading to a long-term significant decrease in plasma cholesterol levels in mice. Hepatocyte specific angiopoietin related protein 3 (Angptl3) is an endogenous inhibitor of LPL. Using the AAV9 mediated AncBE4max system and the dCas9 mediated single base gene editing system to introduce early termination codons, the knockout of Angptal3 in liver cells was achieved with an average knockout efficiency of 63.3%. After 2-4 weeks of administration in mice, the Angptl3 protein was completely undetectable in the peripheral blood, and serum triglycerides and total cholesterol decreased by 58% and 61%, respectively. Ring finger containing protein 130 (RNF130) is an E3 ubiquitin ligase. Research has shown that overexpression of RNF130 using AAV2/8 leads to ubiquitination degradation and redistribution of LDLR on the cell membrane, significantly reducing LDLR expression on liver cells and increasing plasma LDLC levels, while knocking out Rnf130 gene using the AAV-CRISPR system results in the opposite effect. This AAV mediated RNF130 function study proves that RNF130 is a posttranslational regulatory protein of LDLR and plays an important role in the regulation of serum LDLC. As mentioned above, recently, various lipid-lowering gene therapy drugs carried by different serotypes of adeno-associated virus have been applied in clinic or are undergoing clinical trials, and adeno-associated virus has emerging to be an important tool for lipid metabolism research.This article reviews the new progress of adeno-associated virus vectors in lipid metabolism study and lipid-lowering gene therapy.
4.Solid Tumors With Cold Agglutinins:Report of Two Cases and Literature Review.
Hong-Xiang XIE ; Ru-Hui PAN ; Fei-Fei ZHOU ; Su-Mei WANG ; Su-Feng CHEN ; Wen-Jing CAO ; Jia-Jun JI
Acta Academiae Medicinae Sinicae 2023;45(4):689-694
Cold agglutinins(CA),autoantibodies against the antigen I or i on the surface of red blood cells,are mainly of IgM class,and the majority have κ light chains.They can lead to red blood cell agglutination at decreased body temperature and are usually associated with infections,drug reactions,autoimmune diseases,and hematological malignancies.However,solid tumors with CA are rare.We reported two cases of CA in the peripheral blood of patients with solid tumors.Peripheral complete blood cell count of the patients at admission showed reduced erythrocyte count and hematocrit,mismatching between erythrocyte count and hemoglobin,abnormally elevated levels of mean corpuscular hemoglobin and mean cell hemoglobin concentration.Peripheral blood smear showed erythrocyte aggregation.After the sample was preheated at 37 ℃ for 30 min,the reversibility of red blood cell aggregation was observed,and the erythrocyte parameters were corrected.
Humans
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Autoantibodies/isolation & purification*
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Female
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Breast Neoplasms/immunology*
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Ovarian Neoplasms/immunology*
5.Association between body mass index and coronary heart disease in Qingdao: a prospective study.
Jia Hui SONG ; Chi PAN ; Fei Fei LI ; Xiao Jia XUE ; Yu GUO ; Pei PEI ; Xiao Cao TIAN ; Shao Jie WANG ; Ru Qin GAO ; Zeng Chang PANG ; Zhengming CHEN ; Liming LI
Chinese Journal of Epidemiology 2022;43(9):1357-1363
Objective: To analyze the association between body mass index (BMI) and coronary heart disease. Methods: The data for the present study were from the prospective cohort study of China Kadoorie Biobank (CKB) in Qingdao, a total of 33 355 participants aged 30-79 years were included in the study. Cox regression analyses were performed to evaluate the association between BMI and coronary heart disease. Results: During the follow-up for an average 9.2 years, a total of 2 712 cases of ischemic heart disease (IHD) and 420 cases of major coronary events (MCE) were found. Multivariate Cox regression analysis showed that, compared with participants with normal BMI, the participants who were overweight had a 41% and 87% higher risk of IHD and MCE, the adjusted HR were 1.41 (95%CI: 1.27-1.56) and 1.87 (95%CI: 1.43-2.44), respectively. The participants who were obesity had 91% and 143% higher risk of IHD and MCE, the adjusted HR were 1.91 (95%CI: 1.72-2.13) and 2.43 (95%CI: 1.82-3.24), respectively. Conclusion: Overweight and obesity might increase the risk for IHD and MCE.
Body Mass Index
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Coronary Disease/epidemiology*
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Humans
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Myocardial Ischemia/epidemiology*
;
Obesity/epidemiology*
;
Overweight/epidemiology*
;
Prospective Studies
6.Key points of post-marketing evaluation of classic traditional Chinese medicine prescriptions based on combination of disease and syndrome.
Xin-Lu WANG ; Ming-Jun ZHU ; Jian-Ru WANG ; Bin LI ; Rui YU ; Guang-Cao PENG ; Qi-Fei ZHAO ; Yong-Xia WANG
China Journal of Chinese Materia Medica 2021;46(8):2004-2009
Classic prescriptions, hospital preparations and famous traditional Chinese medicine(TCM) experience prescriptions are the main sources of new drug development and innovation. The multi-components and multi-targets treatment characteristics of TCM are advantages, but at the same time, broad indications, unclear clinical positioning and lack of evidence-based evidence support are the key problems affecting the play of TCM efficacy and restricting its promotion and application. The hot in recent research was to how to break through the bottleneck, precise clinical positioning, highlight the advantages of the classic TCM prescriptions, and complete the transformation from clinical practice, clinical research to clinical evidence, but at the same time, it is also the difficulty. The clinical research model of the combination of disease and syndrome can fully reflect the ancient medical case evidence of classic TCM prescriptions, the historical experience of human used and the characteristics of syndrome differentiation and treatment, and highlight the advantages of Chinese medicine. At the same time, under the modern disease classification system and research mode, is conducive to established the standardized clinical evidence report and evaluation system, is conducive to promote the integration of clinical research evidence, and avoids excessive attenuation of information. Based on the previous work of our team, the intention of this study was to make a comment about the key points of the post-marketing evaluation of the classic TCM prescriptions under the combination of disease and syndrome and includes key points:(1)With the syndrome as the carrier, connected with the classical prescription and clinical diseases, focused on the clinical positioning on macroscopically.(2)The combination of syndrome visualization, standardization and pharmacological molecular basis, focus on clinical precise positioning in microscopic.(3)Innovating therapeutic effect evaluation methods, reflecting the curative effect characteristics based on syndrome differentiation.(4)The combination of "randomized controlled evidence-based studies" and "real world evidence-based evaluation", focusing on clinical advantages, fully evidence-based evidence.(5)Make full use of clinical registration studies and pay attention to safety.
Drugs, Chinese Herbal/therapeutic use*
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Humans
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Marketing
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Medicine, Chinese Traditional
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Prescriptions
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Reference Standards
7.Application Value of Abbreviated Comprehensive Geriatric Assessment in Elderly Female Breast Cancer Patients.
Yan LIN ; Yu SONG ; Ying XU ; Ru YAO ; Xing-Tong ZHOU ; Chang-Jun WANG ; Xin HUANG ; Xue-Fei WANG ; Xi CAO ; Qiang SUN
Acta Academiae Medicinae Sinicae 2021;43(3):395-401
Objective To evaluate the application value of abbreviated comprehensive geriatric assessment(aCGA)in elderly female breast cancer patients. Methods Eight aspects of the traditional CGA were simplified to form the aCGA assessment table,based on which the patients were classified into three grades of A,B and C according to the total scores.This study enrolled the elderly female patients with breast cancer aged 70 years and above who were treated in PUMC Hospital from June 2018 to January 2020.Eastern Cooperative Oncology Group(ECOG)scoring and aCGA grading were performed respectively,and the results of the two methods were compared. Results Of the 162 patients,111(68.5%)were classified by the aGGA method as grade A,43(26.5%)as grade B,and 8(5.0%)as grade C;131(80.9%)cases have concurrent diseases,and the most common complications were hypertension(
Aged
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Breast Neoplasms
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Female
;
Geriatric Assessment
;
Humans
8.Rapid chemome profiling of Cistanche salsa using DI-MS/MS~(ALL).
Li-Bo CAO ; Xing-Cheng GONG ; Jin-Ru JIA ; Qian CAO ; Peng-Fei TU ; Qing-Qing SONG ; Yue-Lin SONG
China Journal of Chinese Materia Medica 2021;46(16):4150-4156
The current study aims to rapidly and comprehensively profile the chemical composition of Cistanche salsa using direct infusion coupled with MS/MS~(ALL)(DI-MS/MS~(ALL)). The C. salsa extract was directly imported into electrospray ionization(ESI) source of quadrupole time-of-flight(Q-TOF) mass spectrometer with an infusion pump at a flow rate of 10 μL·min~(-1). Acquisition program was applied under negative ionization polarity to collect one MS~1 spectrum(m/z 50-1 200), followed by 1 150 MS~2 spectra with precursor isolation window(m/z 1) amongst mass range m/z 50-1 200. After each MS~2 spectrum was matched to its precursor ion, putative identification was conducted through matching mass spectral data with literature and database. A total of 31 components were identified from C. salsa, including 9 phenylethanoid glycosides, 2 iridoids, 4 saccharides, 9 organic acids, and 7 other compounds, similar to those from C. tubulosa and C. deserticola. In conclusion, DI-MS/MS~(ALL), a facile and reliable analytical tool, can be employed for qualitative analysis of chemical constituents in C. salsa. The research offers a promising strategy to achieve rapid chemome profiling of herbal medicine and provides an alternative source of Cistanches Herba.
Chromatography, High Pressure Liquid
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Cistanche
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Drugs, Chinese Herbal
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Glycosides
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Plants, Medicinal
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Tandem Mass Spectrometry
9.Correlations Between Severity of Heart Failure Related to Coronary Heart Disease of Qi Deficiency and Blood Stasis Syndrome and Biological Indexes
Jing-jing WEI ; Bin LI ; Guang-cao PENG ; Xin-lu WANG ; Qi-fei ZHAO ; Jian-ru WANG ; Rui YU ; Yong-xia WANG ; Ming-jun ZHU
Chinese Journal of Experimental Traditional Medical Formulae 2021;27(19):97-103
Objective:To explore the correlations of the severity of heart failure related to coronary heart disease arising from Qi deficiency and blood stasis with cardiac function indexes, energy metabolism indexes, coagulation function indexes, and inflammatory factors, in order to provide a scientific basis for further research on the biological foundation of this disease. Method:Two hundred patients with heart failure related to coronary heart disease of Qi deficiency and blood stasis syndrome were collected and then classified into mild, moderate and severe groups according to their scores of Qi deficiency and blood stasis syndrome. Meanwhile, 40 healthy persons confirmed by physical examination during the same period were included into the control group. Such biological indexes as cardiac function indexes, energy metabolism indexes, coagulation function indexes, and inflammatory factors were determined in patients of each group for comparison. Then the Spearman rank correlation analysis was conducted to figure out the correlations between differential indexes and the severity of Qi deficiency and blood stasis syndrome, followed by the determination of risk factors for the severity of Qi deficiency and blood stasis syndrome by ordered logistic regression analysis. Result:The cardiac function indexes, energy metabolism indexes, coagulation function indexes, and inflammatory factors in patients with heart failure related to coronary heart disease arising from Qi deficiency and blood stasis varied significantly. There were significant statistical differences in the levels of N-terminal pro-B-type natriuretic peptide (NT-ProBNP), 6-minute walk test (6MWT), heart-type fatty acid-binging protein (H-FABP), prothrombin time (PT), activated partial thromboplastin time (APTT), tumor necrosis factor-
10.Chemical and pharmacological progress on a Tibetan folk medicine formula Bawei Chenxiang Powder.
Jia-Ming WANG ; Jing-Ru CAO ; Xiao-Li GAO ; Lu-Lu KANG ; Zhuan-Zhuan YANG ; Wuken SHA-NA ; Jun-Jun LI ; Peng-Fei TU ; Xing-Yun CHAI
China Journal of Chinese Materia Medica 2020;45(9):2063-2072
Bawei Chenxiang Powder is a traditional Tibetan folk medicine formula, consisting of resinous wood of Aquilaria sinensis, kernel of Myristica fragrans, fruit of Choerospondias axillaris, travertine, resin of Boswellia carterii or B. bhaw-dajiana, stem of Aucklandia lappa, fruit of Terminalia chebula(roasted), and flower of Gossampinus malabarica. It has the function of clearing heart heat, nourishing heart, tranquilizing mind, and inducing resuscitation, which has been used for the treatment of coronary heart disease and angina pectoris. Modern research shows that the medicine materials of this formula mainly contain terpenoids like sesquiterpenes and triterpenes and polyphenols like flavonoids, lignans, and tannins, displaying some pharmacological activities such as anti-myocardial ischemia, anti-cerebral ischemia, and spatial learning and memory promotion. This review summaries the traditional uses, chemical constituents, and pharmacological activities research progress, hopefully to provide a reference for clarification of its pharmacological active ingredients.
Drugs, Chinese Herbal
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Flavonoids
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Medicine, Tibetan Traditional
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Terminalia
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Tibet

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