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| 1 | Precise nanomedicine for intelligent therapy of cancer显示文摘Precise nanomedicine has been extensively explored for efficient cancer imaging and targeted cancer therapy, as evidenced by a few breakthroughs in their preclinical and clinical explorations. Here, we demonstrate the recent advances of intelligent cancer nanomedicine, and discuss the comprehensive understanding of their structure-function relationship for smart and efficient cancer nanomedicine including various imaging and therapeutic applications, as well as nanotoxicity. In particular, a few emerging strategies that have advanced cancer nanomedicine are also highlighted as the emerging focus such as tumor imprisonment, supramolecular chemotherapy, and DNA nanorobot. The challenge and outlook of some scientific and engineering issues are also discussed in future development. We wish to highlight these new progress of precise nanomedicine with the ultimate goal to inspire more successful explorations of intelligent nanoparticles for future clinical translations. | Huabing Chen Zhanjun Gu Hongwei An Chunying Chen Jie Chen Ran Cui Siqin Chen Weihai Chen Xuesi Chen Xiaoyuan Chen Zhuo Chen Baoquan Ding Qian Dong Qin Fan Ting Fu Dayong Hou Qiao Jiang Hengte Ke Xiqun Jiang Gang Liu Suping Li Tianyu Li Zhuang Liu Guangjun Nie Muhammad Ovais Daiwen Pang Nasha Qiu Youqing Shen Huayu Tian Chao Wang Hao Wang Ziqi Wang Huaping Xu Jiang-Fei Xu Xiangliang Yang Shuang Zhu Xianchuang Zheng Xianzheng Zhang Yanbing Zhao Weihong Tan Xi Zhang Yuliang Zhao | 2018 | Science China Chemistry2018，61，12： | 19 |
| 2 | Spatial and temporal variations of vegetation cover and the relationships with climate factors in Inner Mongolia based on GIMMS NDVI3g data显示文摘Variation in vegetation cover in Inner Mongolia has been previously studied by the remote sensing data spanning only one decade. However, spatial and temporal variations in vegetation cover based on the newly released GIMMS NDVI3g data spanning nearly thirty years have yet to be analyzed. In this study, we applied the methods of the maximum value composite(MVC) and Pearson's correlation coefficient to analyze the variations of vegetation cover in Inner Mongolia based on GIMMS NDVI3g data spanning from 1982 to 2013. Our results indicate that the normalized difference vegetation index(NDVI) increased at a rate of 0.0003/a during the growing seasons despite of the drier and hotter climate in Inner Mongolia during the past three decades. We also found that vegetation cover in the southern agro-pastoral zone significantly increased, while it significantly decreased in the central Alxa. The variations in vegetation cover were not significant in the eastern and central regions. NDVI is positively correlated with precipitation(r=0.617, P=0.000) and also with air temperature(r=0.425, P=0.015), but the precipitation had a greater effect than the air temperature on the vegetation variations in Inner Mongolia. | TONG Siqin ZHANG Jiquan BAO Yuhai Wurina Terigele Weilisi Lianxiao | 2017 | Journal of Arid Land2017，9，3： | 10 |
| 3 | Transcriptome analysis and metabolic profiling reveal the key role of carotenoids in the petal coloration of Liriodendron tulipifera显示文摘Liriodendron tulipifera,also known as tuliptree,is a popular ornamental horticultural plant with extraordinary tulipshaped flowers characterized by an orange band near their base.The mechanisms underlying petal band-specific pigmentation during L.tulipifera flower development are unclear.Here,we combined nontargeted and targeted metabolomics and transcriptomics to identify a pathway cascade leading to carotenoid biosynthesis that is specifically activated in the petal band.The comparative analysis of carotenoid metabolites between L.tulipifera and Liriodendron hybrids indicates thatγ-carotene,a rare carotene in plants,is the most likely orange pigment responsible for the coloration of the petal band.Phenotypic and transcriptomic analyses of developing petals reveal that the band area is first predefined by the loss of green color.Later,the band is maintained by locally activating and repressing carotenoid and chlorophyll biosynthesis genes,respectively.Two rate-limiting genes of carotene biosynthesis,carotenoid isomerase(CRTISO)and epsilon lycopene cyclase(ε-LCY),encode the core enzymes responsible for petal band-specific orange pigmentation in L.tulipifera.In particular,a putative additionalε-LCY copy specific to L.tulipifera may contribute to the distinct petal coloration pattern,compared with L.chinense.Taken together,our work provides a first glimpse of the metabolome and transcriptome dynamics in tuliptree flower coloration and provides a valuable resource for flower breeding or metabolic engineering as well as for understanding flower evolution in an early woody angiosperm. | Zhaodong Hao Siqin Liu Lingfeng Hu Jisen Shi Jinhui Chen | 2020 | Horticulture Research2020，7，1： | 7 |
| 4 | Derivation of hypermethylated pluripotent embryonic stem cells with high potency显示文摘天真的 hypomethylated 胚胎的 pluripotent 干细胞(转换字符) 离胚囊的 preimplantation epiblast 发展地最靠近,与潜力到贡献所有胚胎的纸巾和 germline,除了在妄想的胚胎的胚胎外的纸巾。由对比,类似于 postimplantation epiblast 的 epiblast 干细胞(EpiSCs ) 是相对更多的 methylated 和表演为 chimerism 的一个有限潜力。第一次,这里,我们在 pluripotent 房间以外发展地揭示先进 pluripotent 干细胞(ASC ) ,它是在内部房间团中,但是与更高的力量比 EpiSCs。因此,单个 ASC 在怪物很高效地作出贡献到胎儿, germline,蛋黄囊和胎盘的迷宫。因为他们是,发展地,更多进展了, ASC 不贡献 trophoblast。ASC 在与 Activin A 和基本成纤维细胞生长因素补充的化学上定义的媒介在二个步骤从胚囊被导出,在包含 ActA, BMP4, CHIR99021 和白血病的 ABCL 媒介由 culturing 列在后面禁止的因素。尤其是, ASC 与天真的 pluripotency 基因,以及 mesodermal 的表示展出不同 transcriptome 体的基因;Eomes,时代, Tdgf1, Evx1, hand1, Wnt5a 和不同重复元素。到 ASC 的确定的转换字符的变换也是可完成的。重要地, ASC 作为与 hypomethylated 相比展出稳定的 hypermethylated epigenome 和主要未经触动的印记胚囊和天真的转换字符的内部房间质量。ASC 的性质建议他们以在 pluripotency 的天真、告知的状态之间的一个中间的细胞的状态代表房间。 | Siqin Bao Walfred WC Tang Baojiang Wu Shinseog Kim Jingyun Li Lin Li Toshihiro Kobayashi Caroline Lee Yanglin Chen Mengyi Wei Shudong Li Sabine Dietmann Fuchou Tang Xihe Li | 2018 | Cell Research2018，28，1： | 4 |
| 5 | Surgical outcomes of hand-assisted laparoscopic liver resection vs. open liver resection: A retrospective propensity scorematched cohort study显示文摘Objective: Hand-assisted laparoscopic liver resection has the advantages of open and laparoscopic surgeries.There is still lack of comparison of surgical outcomes between hand-assistied laparoscopic liver resection(HALLR)and open liver resection(OLR). This study compared the surgical outcomes of the two approaches between wellmatched patient cohorts.Methods: Patients who received liver resection during January 2014 and October 2017 in Cancer Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College were included in this retrospective study. Propensity score matching(PSM) was performed to reduce selection bias between the two groups. Operation and short-term surgical outcomes were compared between the well matched groups.Results: During this period, 232 patients with a median age of 55.1 years old received OLR, while 49 patients with a median age of 54.7 years old received HALLR. Compared with HALLR group, OLR group has a higher proportion in male patients(190/232, 81.9% vs. 34/49, 69.4%, P=0.048) and lower albumin(43.2±4.5 vs. 44.8±3.7,P=0.020). After PSM, 49 patients from each group were included in the following analysis. Two groups were well balanced in their baseline characteristics, liver functions, preoperative treatments, abdominal surgery history, and surgical difficulty. None perioperative mortality was observed in both groups. Operation time and postoperative complications were similar in two groups(P=0.935, P=0.056). The HALLR group showed less bleeding amount(177.8±217.1 mL vs. 283.1±225.0 mL, P=0.003) and shorter postoperative stay period(6.9±2.2 d vs. 9.0±3.5 d,P=0.001).Conclusions: We demonstrated that hand-assisted laparoscopic surgery is feasible and safe for liver resection,including some difficult cases. HALLR can provide better bleeding control and faster recovery after surgery. | Shengtao Lin Fan Wu Liming Wang Yunhe Liu Yiling Zheng Tana Siqin Weiqi Rong Jianxiong Wu | 2019 | Chinese Journal of Cancer Research2019，31，5： | 4 |
| 6 | Matrix stiffness modulates tip cell formation through the p-PXN-Rac1-YAP signaling axis显示文摘Endothelial tip cell outgrowth of blood-vessel sprouts marks the initiation of angiogenesis which is critical in physiological and pathophysiological procedures.However,how mechanical characteristics of extracellular matrix(ECM)modulates tip cell formation has been largely neglected.In this study,we found enhanced CD31 expression in the stiffening outer layer of hepatocellular carcinoma than in surrounding soft tissues.Stiffened matrix promoted sprouting from endothelial cell(EC)spheroids and upregulated expressions of tip cell-enriched genes in vitro.Moreover,tip cells showed increased cellular stiffness,more actin cytoskeleton organization and enhanced YAP nuclear transfer than stalk and phalanx ECs.We further uncovered that substrate stiffness regulates FAK and Paxillin phosphorylation in focal adhesion of ECs promoting Rac1 transition from inactive to active state.YAP is subsequently activated and translocated into nucleus,leading to increased tip cell specification.p-Paxillin can also loosen the intercellular connection which also facilitates tip cell specification.Collectively our present study shows that matrix stiffness modulates tip cell formation through p-PXN-Rac1-YAP signaling axis,shedding light on the role of mechanotransduction in tip cell formation.This is of special significance in biomaterial design and treatment of some pathological situations. | Yaru Guo Feng Mei Ying Huang Siqin Ma Yan Wei Xuehui Zhang Mingming Xu Ying He Boon Chin Heng Lili Chen Xuliang Deng | 2022 | Bioactive Materials2022，7，1： | 4 |
| 7 | New Fossil Beetles of the Family Ommatidae (Coleoptera: Archostemata) from the Jehol Biota of China显示文摘A new genus with one new species and five new species of genus Amblomma of fossil ommatids are described and illustrated: Euryomma tylodes gen. et sp. nov., Amblomma cyclodonta sp. nov., Amblomma miniscula sp. nov., Amblomma porrecta sp. nov., Amblomma eumeura sp. nov., and Amblomma protensa sp. nov. All of them were collected from the Upper Jurassic or Lower Cretaceous Yixian Formation of western Liaoning, China. A key to the species of Amblomma is given. The wide epipleural space shows that Euryomma may be a primitive genus in Ommatidae. Many different species of Amblomma occurred within the same sedimentary horizon in this area could be environmental changes caused by frequent volcanic activities during the deposition of the Yixian Formation. | TAN Jingjing REN Dong SHIH Chungkun GE Siqin | 2006 | Acta Geologica Sinica(English Edition)2006，80，4： | 3 |
| 8 | Genome-wide identification and cold stress-induced expression analysis of the CBF gene family in Liriodendron chinense显示文摘Cold-resistance pathways that operate in model plants such as Arabidopsis thaliana and Oryza sativa have been studied extensively.It has been found that CBF genes play an important role in plant cold resistance.Liriodendron chinense,a tree known for its graceful tree shape and widely spread in south China,has weak cold tolerance.However,little is known about its response to cold.To further study the function of L.chinense CBF gene family,we started by characterizing all members of this gene family in the L.chinense genome and their expression profiling.Phylogenetic analysis found that 14 CBF genes in L.chinense are more closely related to their homologues in woody plants and A.thaliana than those in O.sativa.Cis-acting elements and GO analysis showed that some LcCBF genes participated in the biological process of cold stress response.The transcriptomic and RT-qPCR data showed that most of LcCBF genes displayed an initially increasing and subsequently decreasing trend during cold stress course and the expression profile of each member was different.Some LcCBF genes exhibited a different abundance in callus,root,stem and leaf tissues.The structure and expression characteristics of LcCBF genes imply that they may have similar and different functions in response to cold stress conditions.The identification and analysis of LcCBF gene family have laid the foundation for future studies into L.chinense cold stress mechanisms and for the cultivation of cold-resistance cultivars. | Yuanlin Guan Siqin Liu Weihuang Wu Kaiyue Hong Rongxue Li Liming Zhu Yang Liu Ye Lu Jinhui Chen Liming Yang Jisen Shi | 2021 | Journal of Forestry Research2021，32，6： | 3 |
| 9 | Microbial diversity and functionally distinct groups in produced water from the Daqing Oilfield,China显示文摘The microbial community structure and functionally distinct groups in three kinds of produced water samples from the shallow,mesothermic and low-salinity Daqing oil reservoir were systematically evaluated using both culture-dependent and culture-independent methods.Sequence analysis of the 16S rRNA genes indicated that the bacterial library was dominated by Acinetobacter and Arcobacter and the archaeal community was dominated by Methanosaeta and Methanolinea.Two isolated methanogens were closely related with Methanothermobacter thermautotrophicus and Methanoculleus receptaculi.The fermentative bacteria were identified as Pseudomonas,Haloanaerobium,Alcalibacter,Arcobacter,and Pannonibacter.The predominant nitrate-reducing bacteria fell within the genus Pseudomonas.The dominant members of the cultured hydrocarbon-oxidizing bacteria were phylogenetically associated with Micrococcus,Pseudomonas,and Bacillus.Enrichments of biosurfactants and biopolymer producing groups mainly yielded Pseudomonas,Bacillus,and Acenitobacter-related members.The functional groups related to polymer degradation were also affiliated with Pseudomonas and Bacillus.Results from this study provide the fresh insight into the diversity of microbial communities in Daqing petroleum reservoirs.The vast pool of functional strains retrieved in this study was presumed to include the promising strains that could be applied in microbial-enhanced oil recovery in future. | Li Hui Ai Mingqiang Han Siqin Guo Yanling Li Nana Shi Rongjiu Zeng Xiangling Leng Shengbing Zhao Jinyi Liu Xiaobo Zhang Ying | 2012 | Petroleum Science2012，9，4： | 3 |
| 10 | Co-delivery of photosensitizer and diclofenac through sequentially responsive bilirubin nanocarriers for combating hypoxic tumors显示文摘Considering that photodynamic therapy(PDT)-induced oxygen consumption and microvascular damage could exacerbate hypoxia to drive more glycolysis and angiogenesis, a novel approach to potentiate PDT and overcome the resistances of hypoxia is avidly needed. Herein, morpholine-modified PEGylated bilirubin was proposed to co-deliver chlorin e6, a photosensitizer, and diclofenac(Dc). In acidic milieu, the presence of morpholine could enable the nanocarriers to selectively accumulate in tumor cells, while PDT-generated reactive oxidative species(ROS) resulted in the collapse of bilirubin nanoparticles and rapid release of Dc. Combining with Dc showed a higher rate of apoptosis over PDT alone and simultaneously triggered a domino effect, including blocking the activity and expression of lactate dehydrogenase A(LDHA), interfering with lactate secretion, suppressing the activation of various angiogenic factors and thus obviating hypoxia-induced resistance-glycolysis and angiogenesis. In addition, inhibition of hypoxia-inducible factor-1a(HIF-1a) by Dc alleviated hypoxia-induced resistance. This study offered a sequentially responsive platform to achieve sufficient tumor enrichment, on-demand drug release and superior anti-tumor outcomes in vitro and in vivo. | Yang Zhou Fan Tong Weilong Gu Siqin He Xiaotong Yang Jiamei Li Yue-Dong Gao Huile Gao | 2022 | Acta Pharmaceutica Sinica B2022，12，3： | 2 |
| 11 | The role of intraoperative electron radiotherapy in centrally located hepatocellular carcinomas treated with narrow-margin (<1 cm) hepatectomy: a prospective, phase 2 study显示文摘Background: Postoperative radiotherapy (RT) is known to play an important role in the treatment of hepatocellular carcinomas (HCCs), but the specific role of intraoperative electron radiotherapy (IOERT) in HCCs remains unclear. The aim of this study was to investigate the safety and efficacy of IOERT in centrally located HCCs treated with narrow-margin (<1 cm) hepatectomy. Methods: This was a single-center, phase 2, prospective non-randomized controlled study, including 268 patients with centrally located HCCs who underwent narrow-margin hepatectomy. The patients were subsequently allocated to the IOERT group (n=59) or to the control group (n=65). The primary outcome of the study was to compare recurrence-free survival (RFS) between the IOERT group and the control group, and the secondary outcome was to compare overall survival (OS) rate between the two groups. Results: Of 268 patients enrolled, a total of 124 were included in the study: 59 in IOERT group, 65 in control group. The 1-, 2-, 3-year RFS rates were 79.3%, 62.1% and 45.8% for patients in the IOERT group, and 47.6%, 28.6%, and 22.9% for patients in the control group, respectively (P=0.025). The 1-, 2-, and 3-year OS rates were 100.0%, 94.9%, and 83.7% for patients in the IOERT group, and 92.3%, 87.5%, and 79.4% for patients in the control group, respectively (P=0.314). Subgroup analysis of MVI (+) patients revealed that RFS and OS are significantly prolonged in the IOERT subgroup as compared to the control, whereas there was no significant difference of RFS and OS between the two groups in MVI (−) patients. Conclusions: IOERT for centrally located HCCs with concurrent narrow-margin hepatectomy was feasible and safe. Statistically better RFS rate was observed in the IOERT group compared to the control group. Subgroup analysis revealed that IOERT was more beneficial for postoperative survival of HCC patients with MVI. Trial Registration: ChiCTR-TRC-12002802;www.who.int/ictrp. | Liming Wang Yunhe Liu Weiqi Rong Fan Wu Weibo Yu Kan Liu Shengtao Lin Yiling Zheng Kai Zhang Tana Siqin Changcheng Tao Mei Liu Bo Chen Qinfu Feng Jianxiong Wu | 2022 | Hepatobiliary Surgery and Nutrition2022，11，4： | 2 |
| 12 | Variation in contact load at the most loaded position of the outer raceway of a bearing in high-speed train gearbox显示文摘For the fatigue failure and tribological property of a rolling element bearing,the contact load variation plays a significant role while the most loaded position of the bearing outer raceway takes the greatest risk of failure.This paper focuses on the variation in contact load on the most loaded position of the outer raceway of a gearbox bearing in high-speed train.Under operation conditions of different input speeds and torques,the dynamic contact load distribution in a gearbox bearing of high-speed train was measured by instrumenting the bearing with strain gauges.The most loaded position was identified accordingly and the features and reasons of the variation in contact load on this position were suggested.Three factors were found to have varying degrees of impact on the contact load variation under different gear meshing conditions:modal vibration of the cage or shaft,radial geometrical differences among the rollers and vibration of the gearbox housing. | Yu Hou Xi Wang Hongbo Que Rubing Guo Xinhai Lin Siqin Jin Chengpan Wu Yue Zhou Xiaolong Liu | 2021 | Acta Mechanica Sinica2021，37，11： | 2 |
| 13 | Electrochemical properties of niobium and phosphate doped spherical Li-rich spinel LiMn2O4 synthesized by ion implantation method显示文摘Spherical Li-rich lithium manganese oxide(LMO) spinel material was synthesized by an ion implanted method assisted by polyalcohol doped with Niobium and Phosphate simultaneously.The material was characterized by scanning electron microscopy,X-ray diffraction and BET specific surface area analysis.The electrochemical performances were investigated with galvanostatic techniques and cyclic voltammetry.The synthesis process was investigated with TG/DSC.The results show that the lithium ion can be immersed into the pore of manganese dioxide at a low temperature with the ion implanted method.The prepared materials have a higher discharge capacity and better crystallization than those prepared by solid phase method.The doped Nb can improve the capacity of the Li-rich LMO spinel and reinforce the crystal growth along(111) and(400) planes.The crystal grains show circular and smooth morphology,which makes the specific surface area greatly decreased.Phosphate-doped LMO spinel exhibits good high-rate capacity and structure stability.The prepared Li_(1.09)Mn_(1.87)Nb_(0.031)O_(3.99)(PO_4)_(0.021)delivers a discharge capacity of 119mAhg^(-1) at 0.2C(1C=148mAg^(-1)) and 112.8 mAhg^(-1) at 10 C,the discharge capacity retention reaches 98% at 1 ℃ after 50 cycles at 25 ℃ and 94% at 55 ℃. | Wei Li Gao-Wa Siqin Zhi Zhu Lu Qi Wen-Huai Tian | 2017 | Chinese Chemical Letters2017，28，7： | 2 |
| 14 | To move or stay?A cellular automata model to predict urban growth in coastal regions amidst rising sea levels显示文摘Low-lying coastal cities are widely acknowledged as the most densely populated places of urban settlement;they are also more vulnerable to risks resulting from intensive land use and land cover change,human activities,global climate change,and the rising sea levels.This study aims to predict how urban growth is affected by sea level rise(SLR)in the Australian context.We develop an urban cellular automata model incorporating urban planning policies as potential drivers or constraints of urban growth under different SLR scenarios and adaption strategies.Drawing on data capturing the socioeconomic and environmental factors in South East Queensland,Australia,our model is positioned to address one core research question:how does SLR affect future urban growth and human resettlement?Results show that urban growth in coastal regions varies depending on the extent to which the sea level rises and is affected by a combination of factors relating to urban planning and human adaptation strategies.Our study demonstrates the complexity of urban growth in coastal regions and the nuanced outcomes under different adaptation strategies in the context of rising sea levels. | Siqin Wang Yan Liu Yongjiu Feng Zhenkun Lei | 2021 | International Journal of Digital Earth2021，14，9： | 2 |
| 15 | The expansion graph and the properties of its speetrum显示文摘 | A Yongga Siqin | 2009 | Journal of Baoji University of Arts and Sciences (Natural Science)2009，29，3： | 1 |
| 16 | Measured load spectra of the bearing in high-speed train gearbox under different gear meshing conditions显示文摘The load spectrum is a crucial factor for assess-ing the fatigue reliability of in-service rolling element bear-ings in transmission systems.For a bearing in a high-speed train gearbox,a measurement technique based on strain detection of bearing outer ring was used to instrument the bearing and determine the time histories of the distributed load in the bearing under different gear meshing conditions.Accordingly,the load spectrum of the total radial load car-ried by the bearing was compiled.The mean value and class interval of the obtained load spectrum were found to vary non-monotonously with the speed and torque of gear mesh-ing,which was considered to be caused by the vibration of the shaft and the bearing cage.As the realistic service load input of bearing life assessment,the measured load spectrum under different gear meshing conditions can be used to pre-dict gearbox bearing life realistically based on the damage-equivalent principle and actual operating conditions. | Yu Hou Xi Wang Shouguang Sun Hongbo Que Rubing Guo Xinhai Lin Siqin Jin Chengpan Wu Yue Zhou Xiaolong Liu | 2023 | Railway Engineering Science2023，31，1： | 1 |
| 17 | Improvement of valve seating performance of engine' s electromagnetic valvetrain显示文摘 | Liu Liang Chang Siqin | 2011 | Mechatronics2011，21，7： | 1 |
| 18 | Dy3+ and Nd3+in- duced genetic mutation of bacillus alpha-amylase 显示文摘 | Zhang DY Hu JH Siqin B | 2009 | Journal of Inorganic Biochemistry2009，103，7： | 1 |
| 19 | Extended State Observer-based Time-optimal Control for Fast and Precise Point-to-point Motions Driven by a Novel Electromagnetic Linear Actuator 显示文摘 | SHI Xinxin CHANG Siqin | 2013 | Meehatronics2013，23，4： | 1 |
| 20 | The cycle expansion and point cycle of N2 -locally connected graphs显示文摘 | A Yongga Siqin | 1993 | Journal of Hebei Insti- tute of Mechano-Electric Engeineering1993，，4： | 1 |
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