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Injectable hydrogels for anti-tumour treatment:a review

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Biosurface and Biotribology 2020年第3期6卷 59-74页

作者： Huan He chaoming xie Xiong Lu Key Lab of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong University610031 ChengduSichuanPeople’s Republic of China

Injectable hydrogels have become the material of choice for the treatment of solid tumours based on their advantages in loading anti-tumour *** study reviews the main scientific research achievements on antitumour injectable hydrogels in recent *** gel-forming mechanism of anti-tumour injectable hydrogels was listed,and the advantages and difficulties of each gel-forming mechanism were *** addition,several current anti-tumour methods based on injectable hydrogels were discussed,including chemotherapy,hyperthermiabased therapy,catalytic therapy and immune therapy,as well as the integration of diagnosis and treatment to monitor the progress of cancer *** anti-tumour mechanism and the advantages and disadvantages of various tumour treatments were ***,the future development trend of injectable hydrogels for anti-tumour therapy was discussed.

关键词： treatment. treatment mechanism

Natural polymer-based adhesive hydrogel for biomedical applications

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Biosurface and Biotribology 2022年第2期8卷 69-94页

作者： Siyu Long chaoming xie Xiong Lu Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduChina Yibin Research Institute Southwest Jiaotong UniversityYibinChina

Hydrogel is a polymer network system that can form a hydrophilic three-dimensional network structure through different cross-linking *** recent years,hydrogels have received considerable attention due to their good biocompatibility and biodegradability by introducing different cross-linking mechanisms and functional *** with synthetic hydrogels,natural polymer-based hydrogels have low biotoxicity,high cell affinity,and great potential for biomedical fields;however,their mechanical properties and tissue adhesion capabilities have been unable to meet clinical *** recent years,many efforts have been made to solve these *** this review,the recent progress in the field of natural polymer-based adhesive hydrogels is *** authors first introduce the general design principles for the natural polymer-based adhesive hydrogels being used as excellent tissue adhesives and the challenges associated with their ***,their usages in biomedical applications are summarised,such as wound healing,haemostasis,nerve repair,bone tissue repair,cartilage tissue repair,electronic devices,and other tissue ***,the potential challenges of natural polymer-based adhesive hydrogels are presented.

关键词： biomedical applications design principles mechanical properties natural polymer-based adhesive hydrogels tissue adhesion

The Petrology, Geochemistry, and Petrogenesis of E-MORB-type Mafic Rocks from the Guomangco Ophiolitic Mélange, Tibet

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Acta Geologica Sinica(English Edition) 2014年第5期88卷 1437-1453页

作者： XU Mengjing LI Cai WU Yanwang xie chaoming College of Earth Science Jilin University

The Guomangco ophiolitic melange is situated in the middle part of the Shiquanhe- Yongzhu-Jiali ophiolitic melange belt （SYJMB） and possesses all the subunits of a typical Penrose- type ophiolite pseudostratigraphy. The study of the Guomangco ophiolitic melange is very important for investigating the tectonic evolution of the SYJMB. The mafic rocks of this ophiolitic melange mainly include diabases, sillite dikes, and basalts. Geochemical analysis shows that these dikes mostly have E-MORB major and trace element signatures; this is the first time that this has been observed in the SYJMB. The basalts have N-MORB and IAB affinities, and the mineral chemistry of harzburgites shows a composition similar to that of SSZ peridotites, indicating that the Guomangco ophiolitic melange probably originated in a back-arc basin. The Guomangco back-arc basin opened in the Middle Jurassic, which was caused by southward subduction of the Neo-Tethys Ocean in central Tibet. The main spreading of this back-arc basin occurred during the Late Jurassic, and the basalts were formed during this time. With the development of the back-arc basin, the subducted slab gradually retreated, and new mantle convection occurred in the mantle wedge. The recycling may have caused the metasomatized mantle to undergo a high degree of partial melting and to generate E- MORBs in the Early Cretaceous. E-MORB-type dikes probably crystallized from melts produced by about 20%-30% partial melting of a spinel mantle source, which was metasomatized by melts from low-degree partial melting of the subducted slab.

关键词： Guomangco ophiolitic melange E-MORB Geochemistry Petrogenesis Tibet

^(40)Ar/^(39)Ar Thermochronology Constraints on Jurassic Tectonothermal Event of Nyainrong Microcontinent

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Journal of Earth Science 2014年第1期25卷 98-108页

作者： chaoming xie Cai Li Yanwang Wu Ming Wang Peiyuan Hu College of Earth Science Jilin University

To reveal the Jurassic tectonothermal event occurring to the Nyainrong microcontinent which is gripped among the Bangong-Nujiang suture zone,^40Ar/^39Ar dating was carried out on the basement orthogneiss and Jurassic granitc gneiss in the microcontinent. In the heating stage, four sam- pies exhibited a flat plateau age, with the value Tp concentrated in the range of 166-176 Ma; isochron age Ti was concentrated in the range of 165-175 Ma, and their corresponding ages were the consistent within allowable range. The ages should be representative of the era of the final deformation of the Amdo gneiss and cooling emplacement of the magmatic rock in the Jurassic. The geochronological studies have shown that the final deformation of microcontinent crystalline basement and the cooling of the Mesozoic large-scale tectonothermal events occurred in late Middle Jurassic. In Middle Jurassic, Nyainrong microcontinent experienced strong tectonic movement. Combining with the geochronologi- cal with isotope geochemistry for the microcontinent, the cause of the tectonothermal event should be attributed to the collision between the Nyainrong microcontinent and South Qiangtang Block following the northward subduction of Bangong-Nujiang oceanic crust.

关键词： Tibet Plateau Nyainrong microcontinent Jurassic tectonothermal event, ^40Ar/^39Ar thermochronology.

Petrology, Geochemistry and Tectonic Significance of the Metamorphic Peridotites from Longmuco-Shuanghu Ophiolitic Melange belt, Tibet

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Acta Geologica Sinica(English Edition) 2013年第2期87卷 426-439页

作者： WU Yanwang LI Cai xie chaoming WANG Ming HU Peiyuan College of Earth Science Jilin University

Taoxinghu metamorphic peridotite is a firstly reported mantle sequence of ophiolite since Longmuco-Shuanghu-Lancangjiang suture zone （LSLSZ） was proposed, and it is also an important discovered for ophiolite studying in central Qiangtang. Based on detailed analyses of whole-rock geochemistry of Taoxinghu metamorphic peridotites and contrast to metamorphic peridotites in typical ophiolites worldwide, the paper investigates their petrogenesis and geological implication. The petrologic results show that the protolith of Taoxinghu metamorphic perdotites have the mineral assemblage and texture characteristic of mantle peridotite. Most metamorphic peridotites hav near global abyssal peridotites major elements contents, while the few is similar to SSZ-type peridotites. They exhibit typically U-shaped REE patterns, characterized by slight enrichment of LREE and HREE relative to MREE and a low fractionated LREE to HREE segment. Trace elements contents are low and all samples are strong enrichment in Cs, U, Pb, weak enrichment in Ba and depletion in Th, but negative Nb anomalies are only observed in few samples. That suggests Taoxinghu metamorphic peridotites have depletion mantle and suprasubduction affinities. A two-stage evolution history is considered： Taoxinghu metamorphic peridotites originated as the residue from melting at a ridge with 7%-20% degree of fraction melting and were subsequently modified by interaction with mafic melt and aqueous fluid within mantle wedge on subducted zone. Combined with previous studies, we preliminarily propose Taoxinghu metamorphic peridotites may be the Products of initial rifting of palo-Tethys, forming at middle Ordivician-upper Cambrian, and they may be the direct evidences for spreading of palo-Tethys.

关键词： geochemistry metamorphic peridotite Taoxinghu Longmuco-Shuanghu suturezone Tibetan plateau

Zircon U-Pb Age,Geochemical Data:Constraints on the Origin and Tectonic Evolution of the Metamafic Rocks from Longmuco-Shuanghu-Lancang Suture Zone,Tibet

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Journal of Earth Science 2017年第3期28卷 422-432页

作者： Yanwang Wu Cai Li Mengjing Xu chaoming xie Ming Wang School of Geology and Geomatics Tianjin Chengjian University College of Earth Science Jilin University

Bulk-rock major and trace elements and zircon U-Pb data are reported for Permian metamafic rocks from Guoganjianan, in the western part of Longmuco-Shuanghu-Lancang suture zone. These results offer new insights into mantle source characteristics and geodynamic setting of Permian ophiolitic fragments. U-Pb isotopic dating using SHRIMP II method reveals that the metamafic rocks were formed at 274.7± 3.9 and 279.8± 3.6 Ma. The metamafic rocks mostly show N-MORB-typed rare earth element patterns and are enrichment in large-ion lithophile elements, indicating that they are probably derived from partial melting of a depleted mantle in a back-arc basin. Our new data, together with recent studied results on Paleozoic ophiolitic fragments suggest the Paleo-Tethys Ocean in Central Qiangtang opened at Cambrian and widened between Ordovician and Devonian. Northward subduction started in the Late Devonian–Early Carboniferous and a back-arc basin developed during Permian.

关键词： Tibet Longmuco-Shuanghu-Lancang suture zone metamafic rock zircon SHRIMP U-Pb dating geochemistry

Protein hydrogels for biomedical applications

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Biosurface and Biotribology 2024年第3期10卷 106-131页

作者： Xinyi Wang Yue Hou Xiong Lu chaoming xie Yanan Jiang Institute of Biomedical Engineering College of MedicineSouthwest Jiaotong UniversityChengduSichuanChina Key Lab of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduSichuanChina Obesity and Metabolism Medicine-Engineering Integration Laboratory Department of General SurgeryThe Third People's Hospital of ChengduThe Affiliated Hospital of Southwest Jiaotong UniversityChengduSichuanChina

Hydrogels,characterised as highly hydrophilic three-dimensional polymer networks,have gained increasing attention due to their unique physicochemical properties,finding applications in various *** polymer hydrogels exhibit higher biocompatibility and biodegradability compared to traditional synthetic polymer ***,being the principal materials of natural polymer hydrogels,bear numerous modifiable functional *** resultant hydrogel possesses responsiveness,adjustable degradability,and underway as an excellent *** common raw materials used to construct protein hydrogels are *** terms of comparing natural polymer hydrogels with traditional synthetic polymer hydrogels,the authors conduct a detailed analysis and comparison,highlighting the advantages of natural polymer hydrogels in terms of biocompatibility and biodegradability,and summarising their *** authors also address the limitations of various protein hydrogels and list existing strengthening cross-linking strategies,proposing new insights to overcome the application limits of protein ***,the applications of protein hydrogels in drug delivery,biosensing,bio-inks and tissue engineering are *** authors conclude by summarising the current challenges faced by protein hydrogels and prospecting its future development.

关键词： biomaterials biomedical application

Petrology, Geochemistry and Geochronology of Gabbros from the Zhongcang Ophiolitic Mélange, Central Tibet: Implications for an Intra-Oceanic Subduction Zone within the Neo-Tethys Ocean

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Journal of Earth Science 2014年第2期25卷 224-240页

作者： Mengjing Xu Cai Li Wei Xu chaoming xie Peiyuan Hu Ming Wang College of Earth Science Jilin University

In order to investigate the evolution of Shiquanhe-Yongzhu-Jiali ophiolitic melange belt, the gabbros from new discovered Zhongcang ophiolitic melange are studied through petrology, whole-rock geochemistry, zircon U-Pb dating and Lu-Hf isotope. The gabbros investigated in this paper contain cumulate gabbro and gabbro dike, and they have undergone greenschist-amphibolite facies metamorphism. The chondrite normalized rare earth element （REE） patterns of most of these rocks show flat types with slightly light REE （LREE） depletion and the N-MORB normalized incompatible elements diagrams indicate depletion in high field strength elements （HFSE）（Nb, Ta） and enrichment in large ion lithophile elements （LILE）. These gabbros have island arc and mid-ocean ridge basalt af- finities, suggesting that they were originated in an oceanic back arc basin. Whole rock geochemistry and high positive εNd（t） values show that these gabbros were derived from -30% partial melting of a spinel lherzolite mantle, which was enriched by interaction with slab-derived fluids and melts from sediment. U-Pb analyses of zircons from cumulate gabbro yield a weighted mean age of 114.3±1.4 Ma. Based on our data and previous studies, we propose that an intra-oceanic subduction system and back arc basin operated in the Neo-Tethy Ocean of central Tibet during Middle Jurassic and Early Creta- ceous, resembling modern active intra-oceanic subduction systems in the western Pacific.

关键词： Tibet Zhongcang ophiolitic melange gabbro Shiquanhe-Yongzhu-Jiali ophiolitic me- lange belt geochemistry.

Preparation of metal‐organic frameworks and their derivatives for supercapacitors

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Biosurface and Biotribology 2022年第3期8卷 151-164页

作者： Youjian Li Donglin Gan Xu Deng Lili Jiang chaoming xie Xiong Lu Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduSichuanChina Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Jiangsu Key Laboratory of Bio‐functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjingJiangsuChina Institute of Fundamental and Frontier Science University of Electronic Science and Technology of ChinaChengduChina Key Laboratory of Fluid and Power Machinery of Ministry of Education School of Materials Science and EngineeringXihua UniversityChengduChina

To satisfy the requirements of social power development,it is urgently necessary to develop innovative and sustainable new energy storage *** have attracted considerable attention as a new type of energy storage device,owing to their high energy density,high power density,fast charging and discharging speeds,and long cycle *** electrode material is an important factor in determining the electrochemical performance of *** recent years,researchers explored the application of metal‐organic frameworks(MOFs)and their derivatives as electrode materials for *** this paper,the preparation of monometallic,bimetallic,and conductive MOFs,and their derivatives for application in supercapacitors are *** addition,challenges facing MOFs in the field of supercapacitors and their future development prospects are discussed.

关键词： bimetallic MOFs conductive MOFs derivatives monometallic MOFs supercapacitors