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GRP75 of CHO Cells Responds to Ribosylation 被引量:1
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作者 LU Yang HE Rong-Qiao 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2014年第11期1191-1192,共2页
关键词 GRP75 CHO 生物化学 生物物理
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Visualization of Mitochondrial Membrane Dynamics in Primary Cultured Neurons by Cryo-electron Tomography 被引量:1
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作者 WANG Pei TIAN Bu-Yun +4 位作者 FENG Feng-Ping LUAN Hui-Qin XU Xiao-Jun JI Wei XUE Yan-Hong 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2021年第11期1365-1368,共4页
Dear Editor,Mitochondria acts as a cellular organelle that produces ATP and buffers Ca2+,and plays an important role in neuronal growth,survival and function[1].Loss of mitochondria will make the ATP supply insufficie... Dear Editor,Mitochondria acts as a cellular organelle that produces ATP and buffers Ca2+,and plays an important role in neuronal growth,survival and function[1].Loss of mitochondria will make the ATP supply insufficient,resulting in synaptic transmission dysfunction[2].Further,presynaptic mitochondrial dysfunctions are often associated with severe neurological diseases[3].Abnormal mitochondrial function can also lead to neurodegenerative diseases because of the degeneration of synapse transmission,such as Alzheimer’s disease[4]and Parkinson’s disease[5].In neurons,mitochondria have a wide range of size,shape and number,which can be constantly changed through fission and fusion events to form a highly dynamic and organized network[6]and also a way of mitochondrial quality control. 展开更多
关键词 DISEASES DEGENERATION ALZHEIMER
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Mechanism of mechanical regulated Notch activation and structural bases of Notch NRR related T-lineage acute lymphoblastic leukemia(T-ALL)
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作者 Jizhong Lou 《医用生物力学》 EI CAS CSCD 北大核心 2013年第S1期53-54,共2页
Notch proteins are transmembrane receptors which can transduce signals between cells.Upon binding to their ligands on the neighboring cells,notch receptors can be activated and undergo conformational changes which ena... Notch proteins are transmembrane receptors which can transduce signals between cells.Upon binding to their ligands on the neighboring cells,notch receptors can be activated and undergo conformational changes which enable their proteolysis by ADAM-family of metalloproteases<sup>[1]</sup>.The cleavage site of notch protein located on its hetrodimerizaton domain(HD)of the negative regulatory region(NRR)proximal to the N-terminal of the transmembrane helix.Recent crystal structures on several notch proteins<sup>[2-4]</sup>indicated that a series of three Lin12/Notch repeats(LNRs)wrap around the HD and bury the cleavage site to prevent it from proteolysis at the normal conditions without ligand binding.Studies indicated that notch/ligand binding may al- 展开更多
关键词 NOTCH LYMPHOBLASTIC NOTCH TRANSMEMBRANE conformational enable BASES helix REPEATS ADAM
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Ingestion of Carbon Nanotubes and Mesoporous Silica Nanospheres by Caenorhabditis Elegans
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作者 ZHANG Ye WEI Qing +2 位作者 BI Hong QI Linxiang ZHANG Hong 《矿物学报》 CAS CSCD 北大核心 2013年第S1期139-139,共1页
The toxic effects to microorganism induced by nanomaterials have received considerable attentions in the past decades [1]. Herein, two diverse nanomaterials i.e. multi-walled carbon nanotubes (MWCNTs) and mesoporous s... The toxic effects to microorganism induced by nanomaterials have received considerable attentions in the past decades [1]. Herein, two diverse nanomaterials i.e. multi-walled carbon nanotubes (MWCNTs) and mesoporous silica nanospheres (MSNs) were prepared to investigate their deleterious effects on Caenorhabditis. elegans (C. elegans)[2-3]. As shown in Figure 1A, histidine functionalized MWCNTs (his-MWCNTs) were in length of ~500 nm with outer diameter ~20 nm, while fluorescein isothiocyanate dyed MSNs (FITC-MSNs) were in an average diameter of ~70 nm (Figure 1B). Microscopic images display his-MWCNTs having been ingested into intestine of C. elegans after co-incubation for 2 h, as arrowed in Figure 1C and 1E. In contrast, no MSNs were observed to be ingested after co-incubating in the same liquid medium. However, fluorescence microscopic images (Figure 1D and 1F) demonstrate that FITC-MSNs could be ingested by C. elegans after co-incubation for 24 h or longer time via seeding Kingagar plates with FITC-MSNs. 展开更多
关键词 carbon nanotubes MESOPOROUS silica NANOSPHERES CAENORHABDITIS ELEGANS
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Engineering The Neck Hinge Reshapes The Processive Movement of Kinesin-3
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作者 LI Dong REN Jin-Qi +2 位作者 SONG Yin-Long LIANG Xin FENG Wei 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2024年第10期2730-2740,共11页
Objective In kinesin-3,the neck coil correlates with the following segments to form an extended neck that contains a characteristic hinge diverse from a proline in KIF13B to a long flexible linker in KIF1A.The functio... Objective In kinesin-3,the neck coil correlates with the following segments to form an extended neck that contains a characteristic hinge diverse from a proline in KIF13B to a long flexible linker in KIF1A.The function of this neck hinge for controlling processive movement,however,remains unclear.Methods We made a series of modifications to the neck hinges of KIF13B and KIF1A and tested their movement using a single-molecule motility assay.Results In KIF13B,the insertion of flexible residues before or after the proline differentially impacts the processivity or velocity,while the removal of this proline increases the both.In KIF1A,the deletion of entire flexible neck hinge merely enhances the processivity.The engineering of these hinge-truncated necks of kinesin-3 into kinesin-1 similarly boosts the processive movement of kinesin-1.Conclusion The neck hinge in kinesin-3 controls its processive movement and proper modifications tune the motor motility,which provides a novel strategy to reshape the processive movement of kinesin motors. 展开更多
关键词 intracellular transport molecular motor kinesin-3 neck hinge processive movement
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Progress of Research on Origins of Life in China
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作者 ZHAO Yufen HUA Yuejin +4 位作者 ZHANG Hongyu HE Yujian ZHU Ting LIU Yan WU Li 《空间科学学报》 CAS CSCD 北大核心 2020年第5期937-945,共9页
The development of Chinese space science and technology plays a great role in promoting the researches in the field of the origin of life.With the multidisciplinary cooperation,there are fruitful achievements in this ... The development of Chinese space science and technology plays a great role in promoting the researches in the field of the origin of life.With the multidisciplinary cooperation,there are fruitful achievements in this research field obtained over the past two years.This report summarizes the major progress of the basic researches about the origin of life in China during 2018–2020. 展开更多
关键词 Origin of genetic code Origin of metabolism Evolution prototype of modern enzyme Mirrorimage biological system EXTREMOPHILES
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BRIEF REPORT OF ACTIVE CONTROLLED AND OBSERVABLE PROTEIN CRYSTALLIZATION FACILITY
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作者 JIANG Peidong FU Shimi CANG Huaixin BI Ruchang 《空间科学学报》 CAS CSCD 北大核心 2002年第z1期152-152,共1页
  There are two tendency of development on space protein crystal growth facility.Increase the number of samples, for commercial purpose, or observe and control the crystallization process, for study of crystallizati...   There are two tendency of development on space protein crystal growth facility.Increase the number of samples, for commercial purpose, or observe and control the crystallization process, for study of crystallization process.…… 展开更多
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THE SPACE EXPERIMENT OF PROTEIN CRYSTALLIZATION ABOARD THE CHINESE SPACECRAFT SZ-3
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作者 BI Ruchang 《空间科学学报》 CAS CSCD 北大核心 2002年第z1期153-153,共1页
  Using a new flight hardware, a Chinese mission of space protein crystallization has been performed on the Chinese spacecraft SZ-3 for seven days from March 25 to Apr. 1, 2002. The rate of yielding crystals in the ...   Using a new flight hardware, a Chinese mission of space protein crystallization has been performed on the Chinese spacecraft SZ-3 for seven days from March 25 to Apr. 1, 2002. The rate of yielding crystals in the 60 samples is 75%, a little higher than the ground control experiment. Preliminary analysis of the experimental results have shown that among the 16 proteins involved in the mission, about 4 kinds of better diffraction-quality protein crystals were produced in space. At least one kind of protein crystals, i.e. crystals of cytochrome b5 mutant could diffract X ray beyond the highest resolution reported so far. In addition, some rules derived from our numerical studies of the liquid/liquid diffusion protein crystallization were proved by the crystallization of lysozyme as model protein in this space experiment,which also clearly showed the advantages and disadvantages of the gelled protein solution used in microgravity growth of protein crystals. In order to exploit this mission, more diffraction work with the grown crystals and detailed analysis of data to be obtained will be done in the next few months.…… 展开更多
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Hepatocyte Nuclear Factor 4α Transcriptionally Activates TM4SF5 Through The DR1 Motif
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作者 GUO Yi-Ming ZHANG Xiao-Fei +1 位作者 FENG Han ZHENG Li 《生物化学与生物物理进展》 北大核心 2025年第5期1241-1251,共11页
Objective Hepatocyte nuclear factor 4-alpha(HNF4A)is a critical transcription factor in the liver and pancreas.Dysfunctions of HNF4A lead to maturity onset diabetes of the young 1(MODY1).Notably,MODY1 patients with HN... Objective Hepatocyte nuclear factor 4-alpha(HNF4A)is a critical transcription factor in the liver and pancreas.Dysfunctions of HNF4A lead to maturity onset diabetes of the young 1(MODY1).Notably,MODY1 patients with HNF4A pathogenic mutations exhibit decreased responses to arginine and reduced plasma triglyceride levels,but the mechanisms remain unclear.This study aims to investigate the potential target genes transcriptionally regulated by HNF4A and explore its role in these metabolic pathways.Methods A stable 293T cell line expressing the HNF1A reporter was overexpressed with HNF4A.RNA sequencing(RNA-seq)was performed to analyze transcriptional differences.Transcription factor binding site prediction was then conducted to identify HNF4A binding motifs in the promoter regions of relevant target genes.Results RNA-seq results revealed a significant upregulation of transmembrane 4 L six family member 5(TM4SF5)mRNA in HNF4A-overexpressing cells.Transcription factor binding predictions suggested the presence of five potential HNF4A binding motifs in the TM4SF5 promoter.Finally,we confirmed that the DR1 site in the-57 to-48 region of the TM4SF5 promoter is the key binding motif for HNF4A.Conclusion This study identified TM4SF5 as a target gene of HNF4A and determined the key binding motif involved in its regulation.Given the role of TM4SF5 as an arginine sensor in mTOR signaling activation and triglyceride secretion,which closely aligns with phenotypes observed in MODY1 patients,our findings provide novel insights into the possible mechanisms by which HNF4A regulates triglyceride secretion in the liver and arginine-stimulated insulin secretion in the pancreas. 展开更多
关键词 HNF4A RNA-SEQ TM4SF5 DR1 motif MODY1
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光谱学方法对钝顶螺旋藻异藻蓝蛋白活性构象研究(英文) 被引量:5
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作者 邵思蜜 苏海楠 +3 位作者 张熙颖 PENG Guo-hong 周百成 张玉忠 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 2010年第6期1643-1646,共4页
采用羟基磷灰石层析和离子交换层系的方法从钝顶螺旋藻(Spirulina platensis)中分离纯化出异藻蓝蛋白。对异藻蓝蛋白光谱性质受溶液pH变化的影响做了研究。异藻蓝蛋白吸收光谱峰值在650 nm,在620 nm处有1个肩峰,荧光激发光谱的最大发射... 采用羟基磷灰石层析和离子交换层系的方法从钝顶螺旋藻(Spirulina platensis)中分离纯化出异藻蓝蛋白。对异藻蓝蛋白光谱性质受溶液pH变化的影响做了研究。异藻蓝蛋白吸收光谱峰值在650 nm,在620 nm处有1个肩峰,荧光激发光谱的最大发射波长在660 nm。以紫外-可见光吸收光谱表征异藻蓝蛋白对光能的吸收能力,以荧光光谱表征其光能传递能力,以圆二色谱表征其二级结构变化。光谱分析结果表明异藻蓝蛋白在pH为4 ~10的范围之内,其光能吸收和传递的能力保持在一个相对较稳定的范围内,同时异藻蓝蛋白维持三聚体的形式,而其二级结构则会发生一定程度扰动。在pH值低于4或高于10的范围内,异藻蓝蛋白三聚体发生解聚,二级结构发生剧烈变化,其光能吸收和传递能力迅速被破坏。 展开更多
关键词 异藻蓝蛋白 吸收光谱 荧光光谱 圆二色谱 活性构象
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雌性GK糖尿病大鼠的核糖,AGEs和转酮酶变化 被引量:1
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作者 CAO Xiao YU Le-Xiang +2 位作者 WEI Yan QU Mei-Hua HE Rong-Qiao 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2022年第5期949-952,共4页
Dear Editor,Type 2 diabetes is a chronic disease characterized by high glucose levels in the blood.Recently,it has been found that type 2 diabetic patients suffer from glucose and ribose dysmetabolism[1-3].The GotoKak... Dear Editor,Type 2 diabetes is a chronic disease characterized by high glucose levels in the blood.Recently,it has been found that type 2 diabetic patients suffer from glucose and ribose dysmetabolism[1-3].The GotoKakizaki(GK)rat is a nonobese,nonhypertensive model of type 2 diabetes,which,like humans,shares a susceptibility locus on chromosome 10[4-5]. 展开更多
关键词 METABOLISM HYPERTENSIVE diabetes
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人源核小体组装蛋白1类似蛋白5(NAP1L5)促进293T细胞增殖(英文)
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作者 李敏 张海涛 +2 位作者 李总红 侯俊杰 徐小兰 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2018年第4期471-474,共4页
Dear Editor,The nucleosome assembly protein 1(NAP-1),being a histone chaperone[1],primarily participates in the processes of nucleosome assembly and disassembly,histone transport,and histone eviction.
关键词 核小体组装蛋白 蛋白质 医学研究 发展现状
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Targeting androgen receptor and trail: a novel treatment paradigm for breast cancer
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作者 Ya-ping TU Yan XIE +2 位作者 Peter W ABEL Tao-tao WEI Xu LUO 《中国药理学与毒理学杂志》 CAS CSCD 北大核心 2017年第10期954-954,共1页
OBJECTIVE TNF-related apoptosis-inducing ligand(TRAIL)is a promising cancer therapeutic agent due to its minimal toxicity to normal tissues and remarkable apoptotic activity in tumors.However,most breast cancer cells ... OBJECTIVE TNF-related apoptosis-inducing ligand(TRAIL)is a promising cancer therapeutic agent due to its minimal toxicity to normal tissues and remarkable apoptotic activity in tumors.However,most breast cancer cells are resistant to TRAIL-induced apoptosis.Our objectives are to investigate the underlying molecular mechanisms and to develop strategies to overcome such resistance.METHODS To identify modulators of TRAIL-induced apoptosis,we carried out a genome wide si RNA screen.To validate the screening result,we either silenced or overexpressed the identified genes in various breast cancer cells and changes in growth and TRAIL-induced cell apoptosis were determined in vitro and in an orthotopic xenograft mouse model.Finally,we investigated whether small molecules targeting the identified genes improve the effectiveness of TRAIL-therapy.RESULTS We unexpectedly identified androgen receptor(AR)to be responsible for TRAIL resistance.While AR is classically viewed as the key factor in prostate cancer progression,we found that AR expression levels were markedly elevated in human invasive breast cancer specimens including triple-negative breast cancers(TNBC)that are highly aggressive with poor prognosis.Importantly,breast cancer cell lines express different levels of AR that correlated with their TRAIL resistance.AR overexpression in MDA-MB-231 and MDA-MB-436 cells suppressed the TRAIL sensitivity whereas knockdown of AR rendered MCF-7 and MDA-MB-453 cells sensitive to TRAIL-induced apoptosis.AR overexpression also induced TRAIL resistance in breast tumors in vivo.Further,we observed an upregulation of the TRAIL receptor,death receptor 5(DR5)in breast cancer cells,following the removal or inhibition of AR by its antagonists Casodex and MDV3100.Treatment with AR antagonists also enhanced TRAIL-induced breast cancer cell apoptosis.CONCLUSION AR signaling suppresses TRAIL-induced breast cancer cell apoptosis,in part,by suppressing DR5 expression,and a combination of AR antagonists together with TRAIL may be a novel and effective therapy for TNBC. 展开更多
关键词 TNF-related apoptosis-inducing ligand APOPTOSIS resistance breast cancer death receptor 5 androgen receptor ANTAGONISTS
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链脲霉素诱导2型糖尿病雄性大鼠核糖与核糖激酶的变化
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作者 康念欣 于乐祥 +1 位作者 刘缨 赫荣乔 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2023年第5期1235-1238,共4页
Dear Editor,Type 2 diabetes mellitus(T2DM)is a metabolic disorder that impacts multiple organs including brain activity through mechanisms such as glucose toxicity,insulin resistance,mitochondrial dysfunction,and vasc... Dear Editor,Type 2 diabetes mellitus(T2DM)is a metabolic disorder that impacts multiple organs including brain activity through mechanisms such as glucose toxicity,insulin resistance,mitochondrial dysfunction,and vascular damage^([1-2]).As described by Su and his colleagues^([3])in 2013,type 2 diabetics had abnormally high levels of urine ribose,suggesting that the patients suffered from not only glucose metabolism disorders,but also ribose metabolism disorders^([4]). 展开更多
关键词 链脲霉素 ORGANS URINE damage
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理解运动行为抑制调控的新视角:乙酰胆碱门控氯离子通道受体
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作者 司光伟 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2023年第6期1243-1243,共1页
Acetylcholine,the first identified neurotransmitter,plays crucial roles in various brain functions.One well-known case is its involvement as an activating neurotransmitter in the regulation of locomotion.However,its i... Acetylcholine,the first identified neurotransmitter,plays crucial roles in various brain functions.One well-known case is its involvement as an activating neurotransmitter in the regulation of locomotion.However,its inhibitory regulatory role,particularly in locomotion,remains poorly understood. 展开更多
关键词 FUNCTIONS 门控 INVOLVEMENT
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Optical-neural Stimulation in Non-human Primates:Modulating Brain Function and Behavior
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作者 CHEN Yi-Bing WANG Huan YANG Yan 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2024年第10期2379-2391,共13页
Optical-neural stimulation,which encompasses cutting-edge techniques such as optogenetics and infrared neurostimulation,employs distinct mechanisms to modulate brain function and behavior.These advanced neuromodulatio... Optical-neural stimulation,which encompasses cutting-edge techniques such as optogenetics and infrared neurostimulation,employs distinct mechanisms to modulate brain function and behavior.These advanced neuromodulation techniques offer accurate manipulation of targeted areas,even selectively modulating specific neurons,in the brain.This makes it possible to investigate the cause-and-effect connections between neural activity and behavior,allowing for a better comprehension of the intricate brain dynamics towards complex environments.Non-human primates serve as an essential animal model for investigating these complex functions in brain research,bridging the gap between the basic research and clinical applications.One of the earliest optical studies utilizing optogenetic neuromodulation in monkeys was conducted in 2009.Since then,the optical-neural stimulations have been effectively applied in non-human primates.This review summarises recent research that employed optogenetics or infrared neurostimulation techniques to regulate brain function and behavior in non-human primates.The current state of optical-neural stimulations discussed here demonstrates their efficacy in advancing the understanding of brain systems.Nevertheless,there are still challenges that need to be addressed before they can fully achieve their potential. 展开更多
关键词 optical-neural stimulation OPTOGENETICS infrared neurostimulation non-human primates
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脑磁图:从标量探测迈向矢量探测
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作者 卓彦 《生物化学与生物物理进展》 SCIE CSCD 北大核心 2023年第12期2791-2791,共1页
Since its emergence half a century ago,magnetoencephalography(MEG)technology has been recognized as one of the most ideal non-invasive measures to explore functional brain activities^([1]).However,its subsequent devel... Since its emergence half a century ago,magnetoencephalography(MEG)technology has been recognized as one of the most ideal non-invasive measures to explore functional brain activities^([1]).However,its subsequent development has fallen short of expectations,e.g.. 展开更多
关键词 脑磁图 subsequent measures
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Free Fatty Acids Induce Pyroptosis in Pancreatic β-Cells
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作者 LI Zong-Hong XUE Miao-Miao +3 位作者 LIU Hong-Yang HOU Jun-Jie XU Tao ZHOU Yi-Fa 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2018年第3期375-378,共4页
关键词 《生物化学与生物物理进展》 期刊 编辑工作 发行工作
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CRISPR/Cas9系统:脑与认知科学研究的一个重要工具(英文)
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作者 WANG Hao YAN Yan +3 位作者 MIN Lu ZHU Ling-Yun ZHANG Dong-Yi JIAO Ren-Jie 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2017年第9期799-805,共7页
Brain function is associated with the morphologies,organizations,synaptic connections,and circuit activities of neurons.As the building blocks of the brain,neurons display remarkable morphological diversity and form n... Brain function is associated with the morphologies,organizations,synaptic connections,and circuit activities of neurons.As the building blocks of the brain,neurons display remarkable morphological diversity and form neural circuits with synaptic connections.Understanding the'wiring'connectomes among synapses and their roles in neural networks 展开更多
关键词 科学研究 脑与认知 Cas9系统 生物技术
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机械力诱导MHC-Ⅰ构象变化增强TCR抗原识别及T细胞活化
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作者 Peng Wu Tongtong Zhang +19 位作者 Baoyu Liu Panyu Fei Lei Cui Rui Qin Huaying Zhu Danmei Yao Ryan Martinez Wei Hu Chenyi An Yong Zhang Junwei Liu Weiwei Yin Jie Sun Chun Zhou Xun Zeng Jianan Wang Brian Evavold Cheng Zhu Jizhong Lou Wei Chen 《医用生物力学》 EI CAS CSCD 北大核心 2019年第A01期35-35,共1页
CD8+T细胞主要通过T细胞表面受体(T cell recep tor,TCR)识别并与Ⅰ型主要组织性复合物提呈的抗原(pMHC-Ⅰ)相互作用[1]。TCR对刺激型抗原的识别在CD8+T细胞毒性和适应性免疫中发挥着关键作用。许多证据表明机械力可以延长TCR与刺激性p... CD8+T细胞主要通过T细胞表面受体(T cell recep tor,TCR)识别并与Ⅰ型主要组织性复合物提呈的抗原(pMHC-Ⅰ)相互作用[1]。TCR对刺激型抗原的识别在CD8+T细胞毒性和适应性免疫中发挥着关键作用。许多证据表明机械力可以延长TCR与刺激性pMHC作用的键合时间(bond lifetime)形成抗原特异性逆锁键(catch bond)[2],并且这种逆锁键对抗原识别非常重要。然而,机械力调控TCR抗原识别的具体结构机制仍不清楚。通过分子动力学模拟、单分子生物膜力学探针、磁镊、T细胞活化实验和动物模型对此问题展开了系统的研究[4]。发现作用在TCR-pMHC-Ⅰ复合体上的拉力可以作用在TCR-pMHC-Ⅰ复合体上的拉力可以打破MHC-I分子内部α1-α2和β2结构域间的相互作用,导致α1-α2结构域旋转并发生构象变化。力诱导的MHC-I构象变化可以进一步别构地调节TCR与刺激性抗原肽及α1-α2结构域的构象及相互作用,诱导产生新的氢键,增强TCR-pMHC-Ⅰ之间的键合时间,但并不能增强TCR与抑制性pMHC-Ⅰ之间的作用。当用点突变阻断这些新形成的氢键,或者α1-α2和β2结构域被二硫键锁住时,最佳力诱导的TCR-pMHC-Ⅰ作用的键合时间明显缩短并且T细胞的活化受到抑制。另外,在人TCR和HLA-A2相互作用中发现了类似机制,并且与肿瘤相关的HLA-A2点突变[3]可以通过限制HLA-A2α1--α2和β2结构域之间的构象打开减弱TCR对肿瘤抗原的识别及T细胞的功能。研究结果表明,机械力诱导的MHC-I构象变化对TCR抗原识别和T细胞活化非常重要,进一步地阐明了机械力调控TCR抗原识别机制,为临床肿瘤的免疫治疗和药物设计提供了新思路和新靶点。 展开更多
关键词 TCR 刺激性 机械力 细胞活化 抗原识别 构象变化 MHC
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