检索结果-南通市图书馆

NEUROSCIENCE BULLETIN 2024年第4期40卷 517-532页

作者： Shen, Yuhui Shao, Mingting Hao, Zhao-Zhe Huang, Mengyao Xu, Nana Liu, Sheng Sun Yat Sen Univ Zhongshan Ophthalm Ctr State Key Lab Ophthalmol Guangdong Prov Key Lab Ophthalmol & Visual Sci Guangzhou 510060 Peoples R China Guangdong Prov Key Lab Brain Funct & Dis Guangzhou 510080 Peoples R China

primates exhibit complex brain structures that augment cognitive function. The neocortex fulfills high-cognitive functions through billions of connected neurons. These neurons have distinct transcriptomic, morphological, and electrophysiological properties, and their connectivity principles vary. These features endow the primate brain atlas with a multimodal nature. The recent integration of next-generation sequencing with modified patch-clamp techniques is revolutionizing the way to census the primate neocortex, enabling a multimodal neuronal atlas to be established in great detail: (1) single-cell/single-nucleus RNA-seq technology establishes high-throughput transcriptomic references, covering all major transcriptomic cell types; (2) patch-seq links the morphological and electrophysiological features to the transcriptomic reference; (3) multicell patch-clamp delineates the principles of local connectivity. Here, we review the applications of these technologies in the primate neocortex and discuss the current advances and tentative gaps for a comprehensive understanding of the primate neocortex.

关键词： Neuron Brain atlas Patch-seq Connectivity primate RNA-SEQ ALZHEIMERS-DISEASE PYRAMIDAL NEURONS SYNAPTIC CONNECTIONS MOLECULAR DIVERSITY INHIBITORY NEURONS PREFRONTAL CORTEX NEURAL CIRCUITS MOUSE NEOCORTEX

Single-nucleus profiling unveils a geroprotective role of the Foxo3 in primate skeletal muscle aging

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Protein & Cell 2023年第7期14卷 499-514页

作者： Ying Jing Yuesheng Zuo Yang Yu Liang Sun Zhengrong Yu Shuai Ma Qian Zhao Guoqiang Sun Huifang Hu Jingyi Li Daoyuan Huang Lixiao Liu Jiaming Li Zijuan Xin Haoyan Huang Juan Carlos Izpisua Belmonte Weiqi Zhang Si Wang Jing Qu Guang-Hui Liu State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Advanced Innovation Center for Human Brain Protection National Clinical Research Center for Geriatric DisordersXuanwu Hospital Capital Medical UniversityBeijing 100053China University of Chinese Academy of Sciences Beijing 100049China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China China National Center for Bioinformation Beijing 100101China Aging Translational Medicine Center Intemational Center for Aging and CancerBeijing Municipal Geriatric Medical Research CenterXuanwu HospitalCapital Medical UniversityBeijing 100053China Department of Obstetrics and Gynecology Center for Reproductive MedicinePeking University Third HospitalBeijing 100191China The Key Laboratory of Geriatrics Beijing Institute of GeriatricsInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijing Hospital/National Center of Gerontology of National Health CommissionBeijing 100730China Clinical Stem Cell Research Center Peking University Third HospitalBeijing 100191China Department of Orthopaedics Peking University First HospitalBeijing 100034China Sino-Danish College University of Chinese Academy of SciencesBeijing 101408China Sino-Danish Center for Education and Research Beijing 101408China Altos Labs Inc.San DiegoCA 94022USA The Fifth People's Hospital of Chongqing Chongqing 400062China

Age-dependent loss of skeletal muscle mass and function is a feature of sarcopenia,and increases the risk of many aging-related metabolic diseases.Here,we report phenotypic and single-nucleus transcriptomic analyses of non-human primate skeletal muscle aging.A higher transcriptional fluctuation was observed in myonuclei relative to other interstitial cell types,indicating a higher susceptibility of skeletal muscle fiber to aging.We found a downregulation of Foxo3 in aged primate skeletal muscle,and identi-fied FOxo3 as a hub transcription factor maintaining skeletal muscle homeostasis.Through the establishment of a complementary experimental pipeline based on a human pluripotent stem cell-derived myotube model,we revealed that silence of Foxo3 accelerates human myotube senescence,whereas genetic activation of endogenous FOxO3 alleviates human myotube aging.Altogether,based on a combination of monkey skeletal muscle and human myotube aging research models,we unraveled the pivotal role of the FOxO3 in safeguarding primate skeletal muscle from aging,providing a comprehensive resource for the development of clinical diagnosis and targeted therapeutic interventions against human skeletal muscle aging and the onset of sarcopenia along with aging-relateddisorders.

关键词： single-nucleus RNA sequencing primate aging skeletal muscle FOxO3

Aging hallmarks of the primate ovary revealed by spatiotemporal transcriptomics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

PROTEIN & CELL 2024年第5期15卷 364-384页

作者： Lu, Huifen Jing, Ying Zhang, Chen Ma, Shuai Zhang, Weiqi Huang, Daoyuan Zhang, Bin Zuo, Yuesheng Qin, Yingying Liu, Guang-Hui Yu, Yang Qu, Jing Wang, Si Capital Med Univ Xuanwu Hosp Natl Clin Res Ctr Geriatr Disorders Adv Innovat Ctr Human Brain Protect Beijing 100053 Peoples R China Capital Med Univ Xuanwu Hosp Aging Translat Med Ctr Int Ctr Aging & Canc Beijing Municipal Geriatr Med Res Ctr Beijing 100053 Peoples R China Chinese Acad Sci Inst Zool State Key Lab Membrane Biol Beijing 100101 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China Beijing Inst Stem Cell & Regenerat Med Beijing 100101 Peoples R China Chinese Acad Sci Inst Stem cell & Regenerat Beijing 100101 Peoples R China Chinese Acad Sci Inst Zool Key Lab Organ Regenerat & Reconstruct Beijing 100101 Peoples R China Aging Biomarker Consortium Beijing 100101 Peoples R China Fifth Peoples Hosp Chongqing Chongqing 400062 Peoples R China Chinese Acad Sci Inst Zool State Key Lab Stem Cell & Reprod Biol Beijing 100101 Peoples R China Chinese Acad Sci Beijing Inst Genom CAS Key Lab Genom & Precis Med Beijing 100101 Peoples R China China Natl Ctr Bioinformat Beijing 100101 Peoples R China Univ Chinese Acad Sci Sino Danish Coll Beijing 101408 Peoples R China Sino Danish Ctr Educ & Res Beijing 101408 Peoples R China Peking Univ Third Hosp Ctr Reprod Med Dept Obstet & Gynecol Beijing 100191 Peoples R China Peking Univ Third Hosp Clin Stem Cell Res Ctr Beijing 100191 Peoples R China Shandong Univ Cheeloo Coll Med Ctr Reprod Med Jinan 250012 Peoples R China Natl Res Ctr Assisted Reprod Technol & Reprod Gene Shandong Prov Clin Res Ctr Reprod Hlth Shandong Key Lab Reprod Med Key Lab Reprod EndocrinolMinist Educ Jinan 250012 Peoples R China

The ovary is indispensable for female reproduction, and its age-dependent functional decline is the primary cause of infertility. However, the molecular basis of ovarian aging in higher vertebrates remains poorly understood. Herein, we apply spatiotemporal transcriptomics to benchmark architecture organization as well as cellular and molecular determinants in young primate ovaries and compare these to aged primate ovaries. From a global view, somatic cells within the non-follicle region undergo more pronounced transcriptional fluctuation relative to those in the follicle region, likely constituting a hostile microenvironment that facilitates ovarian aging. Further, we uncovered that inflammation, the senescent-associated secretory phenotype, senescence, and fibrosis are the likely primary contributors to ovarian aging (PCOA). Of note, we identified spatial co-localization between a PCOA-featured spot and an unappreciated MT2 (Metallothionein 2) highly expressing spot (MT2high) characterized by high levels of inflammation, potentially serving as an aging hotspot in the primate ovary. Moreover, with advanced age, a subpopulation of MT2high accumulates, likely disseminating and amplifying the senescent signal outward. Our study establishes the first primate spatiotemporal transcriptomic atlas, advancing our understanding of mechanistic determinants underpinning primate ovarian aging and unraveling potential biomarkers and therapeutic targets for aging and age-associated human ovarian disorders.

关键词： spatial transcriptome primate ovary aging senescence inflammation ENDOCRINOLOGY SENESCENCE DYNAMICS CANCER ATLAS CELLS GENE

Single-nucleus transcriptomics reveals a gatekeeper role for FoxP1 in primate cardiac aging

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Protein & Cell 2023年第4期14卷 279-293页

作者： Yiyuan Zhang Yandong Zheng Si Wang Yanling Fan Yanxia Ye Yaobin Jing Zunpeng Liu Shanshan Yang Muzhao Xiong Kuan Yang Jinghao Hu Shanshan Che Qun Chu Moshi Song Guang-Hui Liu Weiqi Zhang Shuai Ma Jing Qu National Laboratory of Biomacromolecules CAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 10o101China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing100049China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of SciencesBeijing 100101China China National Center for Bioinformation Beijing 100101China Aging Translational Medicine Center Xuanwu HospitalCapital Medical UniversityBeijing 100053China Advanced Innovation Center for Human Brain Protection National Clinical Research Center for Geriatric DisordersXuanwu Hospital Capital Medical UniversityBeijing 100053China The Fifth People's Hospital of Chongqing Chongqing 400062China Sino-Danish College University of Chinese Academy of SciencesBeijing 101408China

Aging poses a major risk factor for cardiovascular diseases,the leading cause of death in the aged population.However,the cell type-specific changes underlying cardiac aging are far from being clear.Here,we performed single-nucleus RNA-sequencing analysis of left ventricles from young and aged cynomolgus monkeys to define cell composition changes and transcriptomic alterations across different cell types associated with age.We found that aged cardiomyocytes underwent a dramatic loss in cell numbers and profound fluctuations in transcriptional profles.Via transcription regulatory network analysis,we identified FOxP1,a core transcription factor in organ development,as a key downregulated factor in aged cardiomyocytes,concomitant with the dysregulation of FoxP1 target genes associated with heart function and cardiac diseases.Consistently,the deficiency of FOxP1 led to hypertrophic and senescent phenotypes in human embryonic stem cell-derived cardiomyocytes.Altogether,our findings depict the celiular and molecular landscape of ventricular aging at the single-cell resolution,and identify drivers for primate cardiac aging and potential targets for intervention against cardiac aging and associated diseases.

关键词： single-nucleus RNA-sequencing primate aging FOxP1 cardiomyocyte

A single-nucleus transcriptomic atlas of primate testicular aging reveals exhaustion of the spermatogonial stem cell reservoir and loss of Sertoli cell homeostasis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Protein & Cell 2023年第12期14卷 888-907页

作者： Daoyuan Huang Yuesheng Zuo Chen Zhang Guoqiang Sun Ying Jing Jinghui Lei Shuai Ma Shuhui Sun Huifen Lu Yusheng Cai Weiqi Zhang Fei Gao Andy Peng Xiang Juan Carlos Izpisua Belmonte Guang-Hui Liu Jing Qu Si Wang Advanced Innovation Center for Human Brain Protection National Clinical Research Center for Geriatric DisordersXuanwu Hospital Capital Medical UniversityBeijing100053China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Aging Translational Medicine Center International Center for Aging and CancerBeijing Municipal Geriatric Medical Research CenterXuanwu HospitalCapital Medical UniversityBeijing 100053China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of SciencesBeijing 100101China Institute for Stemcell and Regeneration CAsBeijing100101China China National Center for Bioinformation Beijing 100101China The Fifth People's Hospital of Chongqing Chongqing 400062China 11Sino-Danish College University of Chinese Academy of SciencesBeijing 101408China Sino-Danish Center for Education and Research Beijing 101408China Center for Stem Cell Biology and Tissue Engineering Key Laboratory for Stem Cells and Tissue EngineeringMinistry of EducationSun Yat-sen UniversityGuangzhou510000China Department of Biochemistry Zhongshan School of MedicineSun Yat-sen UniversityGuangzhou 510000China Altos Labs Inc.San DiegoCA 92121USA and Aging Biomarker Consortium China

The testis is pivotal for male reproduction,and its progressive functional decline in aging is associated with infertility.However,the regulatory mechanism underlying primate testicular aging remains largely elusive.Here,we resolve the aging-related cellular and molecular alterations of primate testicular aging by establishing a single-nucleus transcriptomic atlas.Gene-expression patterns along the spermatogenesis trajectory revealed molecular programs associated with attrition of spermatogonial stem cell reservoir,disturbed meiosis and impaired spermiogenesis along the sequential continuum.Remarkably,Sertoli cell was identified as the cell type most susceptible to aging,given its deeply perturbed age-associated transcriptional profiles.Concomitantly,downregulation of the transcription factor Wilms'Tumor 1(WTi),essential for Sertoli cell homeostasis,was associated with accelerated cellular senescence,disrupted tight junctions,and a compromised cell identity signature,which altogether may help create a hostile microenvironment for spermatogenesis.Collectively,our study depicts in-depth transcriptomic traits of non-human primate(NHP)testicular aging at single-cell resolution,providing potential diagnostic biomarkers and targets for therapeutic interventions against testicular aging and age-related male reproductive diseases.

关键词： single-nucleus RNA sequencing primate testis aging WT1

Neural Correlates of Spatial Navigation in primate Hippocampus

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2023年第2期39卷 315-327页

作者： Dun Mao Center for Excellence in Brain Science and Intelligent Technology Institute of NeuroscienceChinese Academy of SciencesShanghai 200031China University of Chinese Academy of Sciences Beijing 100049China

The hippocampus has been extensively implicated in spatial navigation in rodents and more recently in bats.Numerous studies have revealed that various kinds of spatial information are encoded across hippocampal regions.In contrast,investigations of spatial behavioral correlates in the primate hippocampus are scarce and have been mostly limited to head-restrained subjects during virtual navigation.However,recent advances made in freely-moving primates suggest marked differences in spatial representations from rodents,albeit some similarities.Here,we review empirical studies examining the neural correlates of spatial navigation in the primate(including human)hippocampus at the levels of local field potentials and single units.The lower frequency theta oscillations are often intermittent.Single neuron responses are highly mixed and task-dependent.We also discuss neuronal selectivity in the eye and head coordinates.Finally,we propose that future studies should focus on investigating both intrinsic and extrinsic population activity and examining spatial coding properties in large-scale hippocampal-neocortical networks across tasks.

关键词： Spatial navigation primate Hippocampus Theta activity Mixed selectivity Task dependency Eye and head coordinates

primate stem cells: bridge the translation from basic research to clinic application

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2019年第1期62卷 12-21页

作者： Tianqing Li Zongyong Ai Weizhi Ji Yunnan Key Laboratory of primate Biomedical Research Institute of Primate Translational Medicine Kunming University of Science and Technology

A growing body of literature has shown that stem cells are very effective for the treatment of degenerative diseases in rodents but these exciting results have not translated to clinical practice. The difference results from the divergence in genetic, metabolic, and physiological phenotypes between rodents and humans. The high degree of similarity between non-human primates(NHPs) and humans provides the most accurate models for preclinical studies of stem cell therapy. Using a NHP model to understand the following key issues, which cannot be addressed in humans or rodents, will be helpful for extending stem cell applications in the basic science and the clinic. These issues include pluripotency of primate stem cells, the safety and efficiency of stem cell therapy, and transplantation procedures of stem cells suitable for clinical translation. Here we review studies of the above issues in NHPs and current challenges of stem cell applications in both basic science and clinical therapies. We propose that the use of NHP models, in particular combining the serial production and transplantation procedures of stem cells is the most useful for preclinical studies designed to overcome these challenges.

关键词： non-human primate pluripotent stem cells monkey disease model stem cell therapy pluripotency state transition transplantation procedures

A single-cell transcriptomic atlas of primate pancreatic islet aging

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

National Science Review 2021年第2期8卷 17-31页

作者： Jingyi Li Yuxuan Zheng Pengze Yan Moshi Song Si Wang Liang Sun Zunpeng Liu Shuai Ma Juan Carlos Izpisua Belmonte Piu Chan Qi Zhou Weiqi Zhang Guang-Hui Liu Fuchou Tang Jing Qu Gene Expression Laboratory Salk Institute for Biological Studies Ministry of Education Key Laboratory of Cell Proliferation and Differentiation National Laboratory of Biomacromolecules CAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of Sciences Beijing Institute for Brain Disorders Advanced Innovation Center for Human Brain ProtectionNational Clinical Research Center for Geriatric DisordersXuanwu Hospital Capital Medical University The MOH Key Laboratory of Geriatrics Beijing HospitalNational Center of Gerontology Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary StudiesPeking University State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of Sciences Institute for Stem Cell and Regeneration Chinese Academy of Sciences State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of Sciences Beijing Advanced Innovation Center for Genomics Biomedical Pioneering Innovation CenterCollege of Life SciencesPeking University CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of Sciences University of Chinese Academy of Sciences China National Center for Bioinformation

Aging-related degeneration of pancreatic islet cells contributes to impaired glucose tolerance and diabetes.Endocrine cells age heterogeneously, complicating the efforts to unravel the molecular drivers underlying endocrine aging. To overcome these obstacles, we undertook single-cell RNA sequencing of pancreatic islet cells obtained from young and aged non-diabetic cynomolgus monkeys. Despite sex differences and increased transcriptional variations, aged β-cells showed increased unfolded protein response(UPR) along with the accumulation of protein aggregates. We observed transcriptomic dysregulation of UPR components linked to canonical ATF6 and IRE1 signaling pathways, comprising adaptive UPR during pancreatic aging. Notably, we found aging-related β-cell-specific upregulation of HSP90 B1, an endoplasmic reticulum-located chaperone, impeded high glucose-induced insulin secretion. Our work decodes aging-associated transcriptomic changes that underlie pancreatic islet functional decay at single-cell resolution and indicates that targeting UPR components may prevent loss of proteostasis,suggesting an avenue to delaying β-cell aging and preventing aging-related diabetes.

关键词： islet β-cell aging single-cell RNA sequencing primate

Single-nucleus transcriptomic landscape of primate hippocampal aging

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Protein & Cell 2021年第9期12卷 695-716页

作者： Hui Zhang Jiaming Li Jie Ren Shuhui Sun Shuai Ma Weiqi Zhang Yang Yu Yusheng Cai Kaowen Yan Wei Li Baoyang Hu Piu Chan Guo-Guang Zhao Juan Carlos Izpisua Belmonte Qi Zhou Jing Qu Si Wang Guang-Hui Liu State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Advanced Innovation Center for Human Brain Protection National Clinical Research Center for Geriatric DisordersXuanwu Hospital Capital Medical UniversityBeijing 100053China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of SciencesBeijing 100101China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China China National Center for Bioinformation Beijing 100101China Aging Translational Medicine Center Xuanwu HospitalCapital Medical UniversityBeijing 100053China Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijing 100053China Sino Danish CollegeUniversity of Chinese Academy of SciencesBeijing 101408China Sino Danish Center for Education and ResearchBeijing 101408China Department of Obstetrics and Gynecology Center for Reproductive MedicinePeking University Third HospitalBeijing 100191China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China Stem Cell Research Center Peking University Third HospitalBeijing 100191China Gene Expression Laboratory Salk Institute for Biological StudiesLa JollaCAUSA

The hippocampus plays a crucial role in learning and memory,and its progressive deterioration with age is functionally linked to a variety of human neurodegenerative diseases.Yet a systematic profiling of the aging effects on various hippocampal cell types in primates is still missing.Here,we reported a variety of new aging-associated phenotypic changes of the primate hippocampus.These include,in particular,increased DNA damage and heterochromatin erosion with time,alongside loss of proteostasis and elevated inflammation.To understand their cellular and molecular causes,we established the first single-nucleus transcriptomic atlas of primate hippocampal aging.Among the 12 identified cell types,neural transiently amplifying progenitor cell(TAPC)and microglia were most affected by aging.In-depth dissection of gene-expression dynamics revealed impaired TAPC division and compromised neuronal function along the neurogenesis trajectory;additionally elevated pro-inflammatory responses in the aged microglia and oligodendrocyte,as well as dysregulated coagulation pathways in the aged endothelial cells may contribute to a hostile microenvironment for neurogenesis.This rich resource for understanding primate hippocampal aging may provide potential diagnostic biomarkers and therapeutic interventions against age-related neurodegenerative diseases.

关键词： aging hippocampus primate single-cell RNA sequencing

Vocal individuality and rhythm in male and female duet contributions of a nonhuman primate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2020年第2期66卷 173-186页

作者： Dena J.CLINK Johny S.TASIRIN Holger KLINCK Bioacoustics Research Program Cornell Lab of OrnithologyCornell UniversityIthacaNY14850USA Faculty of Agriculture Sam Ratulangi UniversityManadoIndonesia

Duetting,or the stereotypical,repeated and often coordinated vocalizations between 2 individuals arose independently multiple times in the Order primates.Across primate species,there exists substantial variation in terms of timing,degree of overlap,and sex-specificity of duet contributions.There is increasing evidence that primates can modify the timing of their duet contributions relative to their partner,and this vocal flexibility may have been an important precursor to the evolution of human language.Here,we present the results of a fine-scale analysis of Gursky’s spectral tarsier Tarsius spectrumgurskyae duet phrases recorded in North Sulawesi,Indonesia.Specifically,we aimed to investigate individual-level variation in the female and male contributions to the duet,quantify individual-and pair-level differences in duet timing,and measure temporal precision of duetting individuals relative to their partner.We were able to classify female duet phrases to the correct individual with an 80%accuracy using support vector machines,whereas our classification accuracy for males was lower at 64%.Females were more variable than males in terms of timing between notes.All tarsier phrases exhibited some degree of overlap between callers,and tarsiers exhibited high temporal precision in their note output relative to their partners.We provide evidence that duetting tarsier individuals can modify their note output relative to their duetting partner,and these results support the idea that flexibility in vocal exchanges—a precursor to human language—evolved early in the primate lineage and long before the emergence of modern humans.

关键词： primate vocal communication rhythm vocal plasticity vocal individuality