94 research outputs found
Teaching the History of Women in China and Japan: Challenges and Sources
Studying the history of Chinese and Japanese women provides American students with a thematic approach to Asian Studies. This paper reflects on the challenges I face in teaching womenâs histories in China and Japan. It also discusses the pedagogy and sources I use in teaching the course. The paper argues that teaching the history of women in China and Japan will allow us to move beyond the conventionally regional or national focused approach to Asian Studies and enable us to re-imagine old narratives and to introduce students to new methods of understanding both the universality and diversity within Asian history
Medaka Cleavage Embryos Are Capable of Generating ES-Like Cell Cultures
Mammalian embryos at the blastocyst stage have three major lineages, which in culture can give rise to embryonic stem (ES) cells from the inner cell mass or epiblast, trophoblast stem cells from the trophectoderm, and primitive endoderm stem cells. None of these stem cells is totipotent, because they show gene expression profiles characteristic of their sources and usually contribute only to the lineages of their origins in chimeric embryos. It is unknown whether embryos prior to the blastocyst stage can be cultivated towards totipotent stem cell cultures. Medaka is an excellent model for stem cell research. This laboratory fish has generated diploid and even haploid ES cells from the midblastula embryo with ~2000 cells. Here we report in medaka that dispersed cells from earlier embryos can survive, proliferate and attach in culture. We show that even 32-cells embryos can be dissociated into individual cells capable of producing continuously growing ES-like cultures. Our data point to the possibility to derive stable cell culture from cleavage embryos in this organism
Identification of Pluripotency Genes in the Fish Medaka
Stem cell cultures can be derived directly from early developing embryos and indirectly from differentiated cells by forced expression of pluripotency transcription factors. Pluripotency genes are routinely used to characterize mammalian stem cell cultures at the molecular level. However, such genes have remained unknown in lower vertebrates. In this regard, the laboratory fish medaka is uniquely suited because it has embryonic stem (ES) cells and genome sequence data. We identified seven medaka pluripotency genes by homology search and expression in vivo and in vitro. By RT-PCR analysis, the seven genes fall into three groups of expression pattern. Group I includes nanog and oct4 showing gonad-specific expression; Group II contains sall4 and zfp281 displaying gonad-preferential expression; Group III has klf4, ronin and tcf3 exhibiting expression also in several somatic tissues apart from the gonads. The transcripts of the seven genes are maternally supplied and persist at a high level during early embryogenesis. We made use of early embryos and adult gonads to examine expression in stem cells and differentiated derivatives by in situ hybridization. Strikingly, nanog and oct4 are highly expressed in pluripotent blastomeres of 16-cell embryos. In the adult testis, nanog expression was specific to spermatogonia, the germ stem cells, whereas tcf3 expression occurred in spermatogonia and differentiated cells. Most importantly, all the seven genes are pluripotency markers in vitro, because they have high expression in undifferentiated ES cells but dramatic down-regulation upon differentiation. Therefore, these genes have conserved their pluripotency-specific expression in vitro from mammals to lower vertebrates
Normally occurring NKG2D+CD4+ T cells are immunosuppressive and inversely correlated with disease activity in juvenile-onset lupus
The NKG2D receptor stimulates natural killer cell and T cell responses upon engagement of ligands associated with malignancies and certain autoimmune diseases. However, conditions of persistent NKG2D ligand expression can lead to immunosuppression. In cancer patients, tumor expression and shedding of the MHC class Iârelated chain A (MICA) ligand of NKG2D drives proliferative expansions of NKG2D+CD4+ T cells that produce interleukin-10 (IL-10) and transforming growth factor-ÎČ, as well as Fas ligand, which inhibits bystander T cell proliferation in vitro. Here, we show that increased frequencies of functionally equivalent NKG2D+CD4+ T cells are inversely correlated with disease activity in juvenile-onset systemic lupus erythematosus (SLE), suggesting that these T cells may have regulatory effects. The NKG2D+CD4+ T cells correspond to a normally occurring small CD4 T cell subset that is autoreactive, primed to produce IL-10, and clearly distinct from proinflammatory and cytolytic CD4 T cells with cytokine-induced NKG2D expression that occur in rheumatoid arthritis and Crohn's disease. As classical regulatory T cell functions are typically impaired in SLE, it may be clinically significant that the immunosuppressive NKG2D+CD4+ T cells appear functionally uncompromised in this disease
In-depth serum proteomics reveals biomarkers of psoriasis severity and response to traditional Chinese medicine
Serum and plasma contain abundant biological information that reflect the bodyâs physiological and pathological conditions and are therefore a valuable sample type for disease biomarkers. However, comprehensive profiling of the serological proteome is challenging due to the wide range of protein concentrations in serum. Methods: To address this challenge, we developed a novel in-depth serum proteomics platform capable of analyzing the serum proteome across ~10 orders or magnitude by combining data obtained from Data Independent Acquisition Mass Spectrometry (DIA-MS) and customizable antibody microarrays. Results: Using psoriasis as a proof-of-concept disease model, we screened 50 serum proteomes from healthy controls and psoriasis patients before and after treatment with traditional Chinese medicine (YinXieLing) on our in-depth serum proteomics platform. We identified 106 differentially-expressed proteins in psoriasis patients involved in psoriasis-relevant biological processes, such as blood coagulation, inflammation, apoptosis and angiogenesis signaling pathways. In addition, unbiased clustering and principle component analysis revealed 58 proteins discriminating healthy volunteers from psoriasis patients and 12 proteins distinguishing responders from non-responders to YinXieLing. To further demonstrate the clinical utility of our platform, we performed correlation analyses between serum proteomes and psoriasis activity and found a positive association between the psoriasis area and severity index (PASI) score with three serum proteins (PI3, CCL22, IL-12B). Conclusion: Taken together, these results demonstrate the clinical utility of our in-depth serum proteomics platform to identify specific diagnostic and predictive biomarkers of psoriasis and other immune-mediated diseases
26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 - Meeting Abstracts - Antwerp, Belgium. 15â20 July 2017
This work was produced as part of the activities of FAPESP Research,\ud
Disseminations and Innovation Center for Neuromathematics (grant\ud
2013/07699-0, S. Paulo Research Foundation). NLK is supported by a\ud
FAPESP postdoctoral fellowship (grant 2016/03855-5). ACR is partially\ud
supported by a CNPq fellowship (grant 306251/2014-0)
Culture, political movement, and revolution: The formation of the Chinese communist movement in the Chongqing region, 1890-1926.
U.S. scholarship on the origins of the Chinese communist revolution has been focused primarily on the political dimension and on the May Fourth period. The rise of the Chinese communist revolution is viewed as a special and isolated political and intellectual phenomenon, with very little connection to China's everyday life, to China's social and cultural environment at the time and to the revolutionary precursors of the May Fourth era. Lack of examination of these factors results in a failure to recognize the complexity of the rise of Chinese communism. In this study the rise of the early Chinese communist movement in the Chongqing region is conceptualized as a result of an ongoing revolutionary process during the first two decades of the century which evolved in the context of local history and culture, not a product of the May Fourth era alone. Revolutionary movements and traditions of the 1900s and the 1910s were very important precursors of the rise of the Chinese communist movement in the region. The leading figures of the communist movement in the region began their revolutionary trajectory and made their revolutionary commitment to save China in the early 1900s. Their connection to local society and participation in the major Republican revolutions and local political movements played an important role in the rise of the communist movement in the region. Examining local material, elite political and popular cultures of the period, this study tries not only to give a cultural explanation to the rise of Chinese communist revolution in the region, but also to transcend the revolution's abstract image of being formed from ideological and political organizations only and to reveal the human dimensions of the revolutionary process, the material and cultural world in which the local communists lived and to which they responded. It attempts to show that the rise of the Chinese communist revolution was also part of the orderly development of local history and culture and that informal structures of local culture also played an important role in the rise of Chinese communism.Ph.D.Asian historyEconomic historyPolitical scienceSocial SciencesUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/131931/2/9938474.pd
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