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| 1 | Biochemistry of mammalian ferritins in the regulation of cellular iron homeostasis and oxidative responses显示文摘Ferritin,an iron-storage protein,regulates cellular iron metabolism and oxidative stress.The ferritin structure is characterized as a spherical cage,inside which large amounts of iron are deposited in a safe,compact and bioavailable form.All ferritins readily catalyze Fe(II)oxidation by peroxides at the ferroxidase center to prevent free Fe(II)from participating in oxygen free radical formation via Fenton chemistry.Thus,ferritin is generally recognized as a cytoprotective stratagem against intracellular oxidative damage.The expression of cytosolic ferritins is usually regulated by iron status and oxidative stress at both the transcriptional and post-transcriptional levels.The mechanism of ferritin-mediated iron recycling is far from clarified,though nuclear receptor co-activator 4(NCOA4)was recently identified as a cargo receptor for ferritin-based lysosomal degradation.Cytosolic ferritins are heteropolymers assembled by H-and L-chains in different proportions.The mitochondrial ferritins are homopolymers and distributed in restricted tissues.They play protective roles in mitochondria where heme-and Fe/S-enzymes are synthesized and high levels of ROS are produced.Genetic ferritin disorders are mainly related to the L-chain mutations,which generally cause severe movement diseases.This review is focused on the biochemistry and function of mammalian intracellular ferritin as the major iron-storage and anti-oxidation protein. | Jianlin Zhang Xuehui Chen Juanji Hong Aifa Tang Yang Liu Ni Xie Guohui Nie Xiyun Yan Minmin Liang | 2021 | Science China(Life Sciences)2021，64，3： | 5 |
| 2 | Step‑by‑Step Modulation of Crystalline Features and Exciton Kinetics for 19.2%Efficiency Ortho‑Xylene Processed Organic Solar Cells显示文摘With plenty of popular and effective ternary organic solar cells(OSCs)construction strategies proposed and applied,its power conversion efficiencies(PCEs)have come to a new level of over 19%in single-junction devices.However,previous studies are heavily based in chloroform(CF)leaving behind substantial knowledge deficiencies in understanding the influence of solvent choice when introducing a third component.Herein,we present a case where a newly designed asymmetric small molecular acceptor using fluoro-methoxylated end-group modification strategy,named BTP-BO-3FO with enlarged bandgap,brings different morphological evolution and performance improvement effect on host system PM6:BTP-eC9,processed by CF and ortho-xylene(o-XY).With detailed analyses supported by a series of experiments,the best PCE of 19.24%for green solvent-processed OSCs is found to be a fruit of finely tuned crystalline ordering and general aggregation motif,which furthermore nourishes a favorable charge generation and recombination behavior.Likewise,over 19%PCE can be achieved by replacing spin-coating with blade coating for active layer deposition.This work focuses on understanding the commonly met yet frequently ignored issues when building ternary blends to demonstrate cutting-edge device performance,hence,will be instructive to other ternary OSC works in the future. | Bosen Zou Weiwei Wu Top Archie Dela Pena Ruijie Ma Yongmin Luo Yulong Hai Xiyun Xie Mingjie Li Zhenghui Luo Jiaying Wu Chuluo Yang Gang Li He Yan | 2024 | Nano-Micro Letters2024，16，2： | 0 |
| 3 | A natural nanozyme in life is found:the iron core within ferritin shows superoxide dismutase catalytic activity显示文摘Nanozymes are nanomaterials exhibiting intrinsic enzymatic properties,which suggests that inorganic nanoparticles could be bioactive.It’s in 2007,when we introduced the biological methodologies for natural enzymes to systematically study the enzymatic properties of iron oxide nanoparticles,we discovered nanozymes.We found that nanozymes,just as natural enzymes,are able to catalyze biochemical reactions under the physiological conditions,following the similar enzymatic kinetics and catalytic mechanisms(Gao et al.,2007).Since then,the developments of nanozymes bloomed,and lots of nanomaterials were found exhibiting various enzymatic activities(Huang et ah,2019). | Jianlin Zhang Shimin Li Ni Xie Guohui Nie Aifa Tang Xian-En Zhang Minmin Liang Xiyun Yan | 2021 | Science China(Life Sciences)2021，64，8： | 0 |
| 4 | The prototypes of nanozyme-based nanorobots显示文摘Artificial nanorobot is a type of robots designed for executing complex tasks at nanoscale.The nanorobot system is typically consisted of four systems,including logic control,driving,sensing and functioning.Considering the subtle structure and complex functionality of nanorobot,the manufacture of nanorobots requires designable,controllable and multi-functional nanomaterials.Here,we propose that nanozyme is a promising candidate for fabricating nanorobots due to its unique properties,including flexible designs,controllable enzyme-like activities,and nano-sized physicochemical characters.Nanozymes may participate in one system or even combine several systems of nanorobots.In this review,we summarize the advances on nanozyme-based systems for fabricating nanorobots,and prospect the future directions of nanozyme for constructing nanorobots.We hope that the unique properties of nanozymes will provide novel ideas for designing and fabricating nanorobotics. | Jiaying Xie Yiliang Jin Kelong Fan Xiyun Yan | 2020 | Biophysics Reports2020，6，6： | 0 |
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