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Chinese Journal of Natural Medicines 2022年第4期20卷 290-300页

作者： DU Bing-Xin lin Pei LIN Jun School of Life Sciences and Health Engineering Jiangnan UniversityWuxi 214122China

Catechins have been proven to exert antitumor effects in different kinds of cancers.However,the underlying mechanisms have not been completely clarified yet.This study aimed to assess the effects and mechanisms of(-)-epigallocatechin-3-gallate(EGCG)and(-)-epicatechin-3-gallate(ECG)on human melanoma skin A375 cells.Results showed that EGCG and ECG inhibited the proliferation of A375 cells and ECG showed better inhibitory effect.Flow cytometry analysis had shown that EGCG and ECG induced apoptosis and led to cell cycle arrest.EGCG and ECG decreased Bcl-2 expression and upregulated Caspase-3 protein level,indicating the development of apoptosis.Furthermore,EGCG and ECG could decreased mitochondrial membrane potential of A375 cells.In addition,the expression of Beclin-1,LC3 and Sirt3 were downregulated at protein levels,which known to be associated with autophagy.After autophagy was increased by rapamycin,the apoptotic trend was not change,indicating that apoptosis and autophagy are independent.Mechanistically,EGCG and ECG treatments decreased phosphorylated-AMPK(p-AMPK)and increased the ratios of P-PI3K,p-AKT and p-mTOR in melanoma cells.Conclusively,EGCG and ECG induced apoptosis via mitochondrial signaling pathway,downregulated autophagy through modulating the AMPK/mTOR and PI3K/AKT/mTOR signaling pathway.It indicated that EGCG and ECG may be utilized in human melanoma treatment.

关键词： EGCG ECG Apoptosis Autophagy PI3K/AKT/mTOR

Five Rutaceae family ethanol extracts alleviate H2O2 and LPS-induced inflammation via NF-κB and JAK-STAT3 pathway in HaCaT cells

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Chinese Journal of Natural Medicines 2022年第12期20卷 937-947页

作者： HONG Mengsa XIAO Kun lin Pei LIN Jun School of Life sciences and Health Engineering Jiangnan UniversityWuxi 214122China

This study was designed to investigate the effects of five Rutaceae family ethanol extracts(FRFEE):Citrus medica linn(CML),Citrus aurantium L.Cv.Daidai(CAD),Citrus medica linn.***.sarcodactylis(Noot.)Swingle(CMS),Citrus sinensis L.Osbeck(CSO)and Zanthoxylum bungeanum Maxim(ZBM)on retarding the progression of H_(2)O_(2) and LPS-induced HaCaT cells.Cell inflammatory injury model was established by H_(2)O_(2) and LPS.The alleviative effects of FRFEE were evaluated by detecting the activity of superoxide dismutase(SOD),glutathione(GSH)and the generation of reactive oxygen species(ROS).The inflammatory signaling pathways of NF-κB and JAK-STAT3 were detected by Western blotting,the mRNA expression levels of inflammatory factors and skin barrier factors were detected by RT-PCR.50%ethanol extracts of five medicinal and food homologous herbs of Rutaceae family showed different levels of anti-oxidant and anti-inflammatory activities.The FRFEE effectively improved SOD and GSH content and decreased ROS levels.Meanwhile,FRFEE strongly suppressed two inflammatory signaling pathways NF-κB and JAK-STAT3.The RT-PCR examination of inflammatory factors and skin barrier factor revealed significant anti-inflammatory effects of FRFEE.It was worth noting that among the five extracts,Zanthoxylum bungeanum Maxim extract had the best anti-inflammatory and anti-oxidation effects.In addition,it could strongly inhibit the expression of psoriasis factor CCL20.In summary,these results suggested that Zanthoxylum bungeanum Maxim extract could be used as an anti-psoriatic agent in the treatment of psoriasis among FRFEE.

关键词： Rutaceae Medicinal and food homologous herbs Oxidative stress Anti-inflammation Psoriasis

Spontaneous uterine perforation of pyometra leads to acute abdominal pain and septic shock:a case report

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World Journal of Emergency Medicine 2022年第6期13卷 504-506页

作者： Xiao-li Li jun lin Department of Gynecology the Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310009China Department of General Gynecology Women’s HospitalSchool of MedicineZhejiang UniversityHangzhou 310006China

Dear editor,Uterine pyometra is a rare disease that mostly affects elderly women and is usually asymptomatic.Pyometra is defined as an accumulation of pus in the uterine cavity caused by genital tract malignancy or benign cervical diseases such as senile cervicitis,cervical polyps,or remaining intrauterine devices after menopause.[1]The incidence of spontaneous uterine perforation due to pyometra is extremely low,ranging from 0.01%to 0.05%.[2]Although it has low morbidity,it can progress to diffuse peritonitis,and the mortality rate associated with septic shock is as high as 25%-40%.[3]It is still difficult for emergency doctors to provide an accurate diagnosis and perform surgery on time.Here,we present a rare case of a 72-year-old woman who was diagnosed with spontaneous uterine perforation of pyometra and successfully treated with an emergency laparotomy.

关键词： uterine diagnosis mortality

Antiaromaticity-promoted radical anion stability in α-vinyl heterocyclics

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Organic Chemistry Frontiers 2022年第5期9卷 1427-1436页

作者： Lu lin jun Zhu State Key Laboratory of Physical Chemistry of Solid Surfaces Fujian Provincial Key Laboratory of Theoretical and Computational ChemistryDepartment of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005People’s Republic of China

As an electron-rich species,radical anions have a wide range of applications in organic synthesis.In addition,aromaticity is an essential concept in chemistry that has attracted considerable attention from experimenta... 详细信息

关键词： synthesis radical heterocyclic

Study of primordial deuterium abundance in Big Bang nucleosynthesis

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Nuclear Science and Techniques 2024年第3期35卷 208-215页

作者： Zhi-lin Shen Jian-jun He Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Institute of Radiation Technology Beijing Academy of Science and TechnologyBeijing 100875China

Big Bang nucleosynthesis(BBN)theory predicts the primordial abundances of the light elements^(2) H(referred to as deuterium,or D for short),^(3)He,^(4)He,and^(7) Li produced in the early universe.Among these,deuterium,the first nuclide produced by BBN,is a key primordial material for subsequent reactions.To date,the uncertainty in predicted deuterium abundance(D/H)remains larger than the observational precision.In this study,the Monte Carlo simulation code PRIMAT was used to investigate the sensitivity of 11 important BBN reactions to deuterium abundance.We found that the reaction rate uncertainties of the four reactions d(d,n)^(3)He,d(d,p)t,d(p,γ)^(3)He,and p(n,γ)d had the largest influence on the calculated D/H uncertainty.Currently,the calculated D/H uncertainty cannot reach observational precision even with the recent LUNA precise d(p,γ)^(3) He rate.From the nuclear physics aspect,there is still room to largely reduce the reaction-rate uncertainties;hence,further measurements of the important reactions involved in BBN are still necessary.A photodisintegration experiment will be conducted at the Shanghai Laser Electron Gamma Source Facility to precisely study the deuterium production reaction of p(n,γ)d.

关键词： Big Bang nucleosynthesis Abundance of deuterium Reaction cross section Reaction rate Monte Carlo method

Nanoplatform-based cellular reactive oxygen species regulation for enhanced oncotherapy and tumor resistance alleviation

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中国化学快报:英文版 2023年第9期34卷 85-99页

作者： Meifang Wang Ping’an Ma jun lin State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

The cancer cells realize their proliferation and metastasis activities based on the special redox adaptation to increased reactive oxygen species(ROS)level,which inversely makes them sensitive to external interference with their redox state.In view of this,in recent decades,researchers have made great efforts to construct a series of novel nanoplatform-based ROS-mediated cancer therapies through increasing ROS generation and inhibiting the ROS elimination.Besides,the multidrug resistance and thermoresistance of tumor are closely related to tumor redox state.Recently,numerous works have shown that ROS regulation in cancer cells can intervene in the expression,function and stability of related proteins to achieve reversal of tumor resistance.In this review,the recent researches about ROS-regulating nanoagents on cancer therapy and tumor resistance alleviation have been well summarized.Finally,the challenges and research directions of ROS-regulating nanoagents for future clinical translation are also discussed.

关键词： Nanoagents ROS regulation ROS-mediated cancer therapy Multidrug resistance Thermoresistance

Investigation on the influence of vortex generator on particle resuspension

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Particuology 2024年第3期86卷 126-136页

作者： Dongchi Yu jun-Li lin Jin-Han Xie ASML 80W Tasman DrSan Jose95134CaliforniaUSA Department of Mechanics and Engineering Science at College of Engineering and State Key Laboratory for Turbulence and Complex Systems Peking UniversityBeijing100081China

The vortex generator(VG)and its well-known effect in flow optimization are widely studied and employed across different engineering sectors.However,while the same working principles of VG may be well suited for the applications on surface-cleaning technologies,such promising potential is hardly,if any,explored in the published literature.Therefore,in the present study,the influence on flow-induced particle resuspension brought by a rectangular vG in a channel flow is investigated with the help of highfidelity computational fluid dynamics simulations.Substantial increases of particle removal forces and resuspension rates are discovered in long,strip-like regions with reduced boundary-layer thickness resulted from the vG-induced vortices,and the enhancement effect is especially significant for configurations with the VG installed at a greater angle of attack.It is also shown that while the resuspension enhancements on the lower and the upper surfaces of the channel exhibit distinct statistical characteristics,having a VG in the channel improves the overall particle-removing capability of the channel flow by introducing higher surface-averaged removal forces and particle resuspension rates.Last but not least,the increase of resuspension rate is especially significant for the smaller,micron-scale particles which are otherwise hardly disturbed by a VG-less channel flow,and such resuspension-enhancement effectgenerally subsides with increasing particle size.

关键词： Particle resuspension Vortexgenerator CFD Surface cleaning

Effects of Maxingloushi decoction on immune inflammation and programmed death markers in mice with chronic obstructive pulmonary disease

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World Journal of Emergency Medicine 2022年第1期13卷 40-45页

作者： Li Li jun Yan lin-qin Ma Wei Bi Cai-jun Wu Emergency Department Dongzhimen HospitalBeijing University of Chinese MedicineBeijing 100700China Institute of Sepsis Beijing University of Chinese MedicineBeijing 100029China

BACKGROUND: To investigate effects of Maxingloushi decoction on lung inflammation and programmed death markers(programmed death-1 [PD-1], programmed death-ligand 1 [PD-L1]) in the lung tissue, peripheral blood, and bronchoalveolar lavage fl uid(BLF) in a mouse model of chronic obstructive pulmonary disease(COPD).METHODS: Thirty-six mature male BALB/C mice were randomly divided into normal group(group A, n=6), COPD model group(group B, n=10), Maxingloushi decoction + COPD group(group C, n=10), and PD-1 inhibitor + COPD group(group D, n=10). The COPD model was established by smoke inhalation combined with lipopolysaccharide(LPS). Levels of PD-1 and PD-L1 in plasma and BLF were measured by enzyme-linked immunosorbent assay(ELISA). Histopathological techniques were used to semi-quantitatively analyze the immuno-fluorescence optical density(IOD) value of the lung tissue. RESULTS: In plasma and BLF, the expression of PD-1 in the group B was higher than that in the group A, and the expression of PD-L1 was lower than that in the group A. The expression of PD-1 and PD-L1 in the lung tissue was normalized in the group C in comparison with the group B(P<0.05) and the group D(P<0.05), and infl ammatory cell infiltration in the lung tissue was also improved.CONCLUSIONS: These findings reveal that COPD causes an immune imbalance in the peripheral blood and lung tissue, and that both Maxingloushi decoction and PD-1 inhibitor treatment can mitigate lung inflammation in COPD by reducing PD-1 expression and increasing PD-L1 expression. The treatment effect of Maxingloushi decoction may be superior to that of PD-1 inhibitor.

关键词： Chronic obstructive pulmonary disease Programmed death-1 Programmed death-ligand 1 Mice Immune Maxingloushi decoction

The Macrophage IL-23/IL-17A Pathway:A New Neuro-Immune Mechanism in Female Mechanical Pain

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Neuroscience Bulletin 2022年第4期38卷 453-455页

作者： Zhi Tan Zhen-Jia lin Long-jun Wu Li-jun Zhou Department of Physiology and Pain Research Center Zhongshan School of MedicineSun Yat-sen UniversityGuangzhou 510080China Department of Neurology Mayo ClinicRochesterMN 55905USA

Considerable clinical evidence has demonstrated that the prevalence and severity of many chronic pain syndromes differ across sex,and are more predominant in womenthan inmen[l]But most preclinical research on chronic pain mechanisms has been performed primarily in male animals.It is generally understood that inflammatory responses in the peripheral and central nervous systems are critical for chronic pain[2,3],Given that sex dimorphism influences immunity in various diseases[4].

关键词： immunity clinical pain

Chimeric antigen receptor engineered innate immune cells in cancer immunotherapy

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Science China(Life Sciences) 2019年第5期62卷 633-639页

作者： Chu lin jun Zhang Department of Immunology School of Basic Medical Sciences NHC Key Laboratory of Medical Immunology (Peking University) Peking University Health Science Center

Introducing chimeric antigen receptor into immune cells against malignancies has contributed to a revolutionary innovation in cancer immunotherapy. As an important type of adaptive immune cells, T cells first caught researchers' attention and became great success in chimeric antigen receptor-based immunotherapy. However, engineered T cells seem to hit their bottleneck when resistance of cancerous cells, less encouraging responses in solid tumors and unwanted toxicities to the host remain to be solved.Meanwhile, innate immune cells get to join the race. Representatives such as natural killer cells, natural killer T cells, γδT cells and macrophages also prove to be well redirected with chimeric antigen receptors. Compared to chimeric antigen receptor engineered T cells, these engineered innate immune cells may possess multiple targeting and killing mechanisms, have the potential to crack the barrier of solid tumors and have less side effects in the host. Besides, possible universal access to cell resources and improvements in expansion and transduction techniques make these cells promising candidates with huge potential in translational medicine. Therefore, innate immune cells claim a brand-new dimension and are likely to supplement T cells greatly in the field of chimeric antigen receptor-based immunotherapy.

关键词： chimeric antigen receptor cancer immunotherapy innate immune cell