The mechanism and function of extracellular matrix protein Mindin in the colon cancer progression

在世界范围内，结直肠癌是临床上常见的恶性肿瘤之一。结肠癌的发病机制也在不断细致、深入的研究。然而结肠癌这种实体肿瘤不像单纯的肠癌细胞系。相反，它是由多种类型的细胞和细胞外基质组成的功能失调的器官。细胞外基质是肿瘤微环境的重要组成部分，包含各种各样的细胞因子和代谢产物，具有向细胞传导各种环境信号的作用。这些信号对于细胞生命过程的方方面面都必不可少，包括增殖、分化和死亡等。然而，细胞外基质蛋白在结肠癌发生发展的演变过程中的作用尚未完全明确。 分泌型的细胞外基质蛋白Mindin作为Mindin-F-spondin家族的重要成员在先天和后天免疫中发挥了及其重要的作用。然而它在结肠癌发生发展过程中的作...Colorectal cancer (CRC) is one of the most common cancers worldwide. The mechanism of CRC initiation has been analyzed in detail. However, solid tumors are not simply clones of cancer cells. Instead, they are abnormal organs that are composed of multiple cell types and extracellular matrix (ECM). The ECM, one component of the tumor microenvironment, contains various peptide factors and metabolites...学位：理学博士院系专业：医学院_生理学学号：2452012015396

Ethical Reflection on Standardized Management of Intestinal Microbiota Transplantation

肠道微生态系统是人体健康所必需的重要且复杂的生物系统。肠道微生态系统的紊乱参与人体多种疾病的发生发展过程。而肠菌移植技术可有效调节肠道菌群，修复失衡的肠道微生态，为当今多种胃肠道及胃肠以外疾病的治疗带来新的突破。然而，目前尚缺乏完整的、系统性的肠菌移植技术管理规范。就肠菌移植技术规范化管理所涉及的内容进行探讨，并从医学伦理学角度思考规范化管理中所涉及的伦理问题，以期推动肠菌移植技术的临床应用。Intestinal microecology is an important and complex biological system necessary for human health. Its disorder is involved in the development of various diseases of human body. The technology of intestinal microbio- ta transplantation can effectively regulate the intestinal flora, repair the imbalance of the intestinal microecology, and bring a new breakthrough for the treatment of many diseases of gastrointestinal tract and outside gastrointestinal tract. However, there is still no systematic and complete management standard for intestinal microbiota transplanta- tion technology. This paper discussed related content involved in standardized management of intestinal microbiota transplantation technology and reflected the ethical problems involved in standardized management from the perspec- tive of medical ethics, in order to promote the clinical application of intestinal microbiota transplantation technology

Distribution of Bone-Marrow-Derived Endothelial and Immune Cells in a Murine Colitis-Associated Colorectal Cancer Model

National Natural Science Foundation of China [81072013, 91229201]; Fundamental Research Funds for the Central Universities in China [2010111082]; Foundations of Health Bureau of Xiamen in China [3502Z200940010]Inflammatory bowel disease (IBD) can lead to an increased risk of developing colorectal cancer (CRC). The aim of this study was to establish a model for combined bone marrow transplantation (BMT) and colitis-associated colorectal cancer (CAC) and to define the contribution of BM-derived cells during the inflammation associated with carcinogenesis. We established a model for BMT using green fluorescent protein (GFP) transgenic mice, followed by AOM/DSS-induced CAC, and performed confocal microscopy analysis on in vivo living tissue and frozen tumor sections. Our imaging analyses showed that GFP-positive cells extensively infiltrated the tumor stroma and that some WGA and GFP or CD31 and GFP double-positive cells were observed in the lining of tumor vessels. Flow cytometry analysis of the tumor-infiltrating cells showed that the GFP-positive CD11c+ DCs cells were one-third of the GFP+/CD11C-cells, and that half of these DCs (0.96% vs 1.02%) were GFP-positive BM-derived cells. The majority of CD4(+) T cells were GFP-negative (12.02% vs 1.9%), and we discovered a novel CD4(+) CD11c(+) DC subset (0.34% vs 1.64%). In conclusion, we defined the distribution of BM-derived endothelial cells, CD11c(+) DCs and CD4(+) T cells in tumors. This model might be useful for elucidating the diverse BM-derived cell types and functions during the progression of colitis-associated colorectal cancer

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies