1
|
Zeng J, Yi D, Sun W, Liu Y, Chang J, Zhu L, Zhang Y, Pan X, Dong Y, Zhou Y, Lai M, Bian G, Zhou Q, Liu J, Chen B, Ma F. Overexpression of HOXA9 upregulates NF-κB signaling to promote human hematopoiesis and alter the hematopoietic differentiation potentials. Cell Regen 2021; 10:9. [PMID: 33426581 PMCID: PMC7797385 DOI: 10.1186/s13619-020-00066-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 10/22/2020] [Indexed: 12/23/2022]
Abstract
Background The HOX genes are master regulators of embryogenesis that are also involved in hematopoiesis. HOXA9 belongs to a cluster of HOX genes that play extensively studied roles in hematopoiesis and leukemogenesis. Methods We established HOXA9-inducible human embryonic stem cells (HOXA9/hESCs) with normal pluripotency and potential for hematopoiesis, which could be used to analyze gene function with high accuracy. HOXA9/hESCs co-cultured with aorta–gonad–mesonephros-derived stromal cells (AGM-S3) were induced to overexpress HOXA9 with doxycycline (DOX) at various times after hematopoiesis started and then subjected to flow cytometry. Results Induction of HOXA9 from Day 4 (D4) or later notably promoted hematopoiesis and also increased the production of CD34+ cells and derived populations. The potential for myelogenesis was significantly elevated while the potential for erythrogenesis was significantly reduced. At D14, a significant promotion of S phase was observed in green fluorescent protein positive (GFP+) cells overexpressing HOXA9. NF-κB signaling was also up-regulated at D14 following induction of HOXA9 on D4. All of these effects could be counteracted by addition of an NF-κB inhibitor or siRNA against NFKB1 along with DOX. Conclusions Overexpression of HOXA9 starting at D4 or later during hematopoiesis significantly promoted hematopoiesis and the production of myeloid progenitors while reduced the production of erythroid progenitors, indicating that HOXA9 plays a key role in hematopoiesis and differentiation of hematopoietic lineages. Supplementary Information The online version contains supplementary material available at 10.1186/s13619-020-00066-0.
Collapse
Affiliation(s)
- Jiahui Zeng
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Danying Yi
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Wencui Sun
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Yuanlin Liu
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Jing Chang
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Lijiao Zhu
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Yonggang Zhang
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Xu Pan
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Yong Dong
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Ya Zhou
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Mowen Lai
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Guohui Bian
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Qiongxiu Zhou
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Jiaxin Liu
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China
| | - Bo Chen
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China.
| | - Feng Ma
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Institute of Blood Transfusion, No. 26, Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China. .,State Key Laboratory of Biotherapy, Sichuan University, Chengdu, 610065, China. .,State Key Laboratory of Experimental Hematology, CAMS & PUMC, Tianjin, 300020, China.
| |
Collapse
|
2
|
Bian G, Gu Y, Xu C, Yang W, Pan X, Chen Y, Lai M, Zhou Y, Dong Y, Mao B, Zhou Q, Chen B, Nakathata T, Shi L, Wu M, Zhang Y, Ma F. Early development and functional properties of tryptase/chymase double-positive mast cells from human pluripotent stem cells. J Mol Cell Biol 2020; 13:104-115. [PMID: 33125075 PMCID: PMC8104937 DOI: 10.1093/jmcb/mjaa059] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 07/03/2020] [Accepted: 07/13/2020] [Indexed: 12/15/2022] Open
Abstract
Mast cells (MCs) play a pivotal role in the hypersensitivity reaction by regulating the innate and adaptive immune responses. Humans have two types of MCs. The first type, termed MCTC, is found in the skin and other connective tissues and expresses both tryptase and chymase, while the second, termed MCT, which only expresses tryptase, is found primarily in the mucosa. MCs induced from human adult-type CD34+ cells are reported to be of the MCT type, but the development of MCs during embryonic/fetal stages is largely unknown. Using an efficient coculture system, we identified that a CD34+c-kit+ cell population, which appeared prior to the emergence of CD34+CD45+ hematopoietic stem and progenitor cells (HSPCs), stimulated robust production of pure Tryptase+Chymase+ MCs (MCTCs). Single-cell analysis revealed dual development directions of CD34+c-kit+ progenitors, with one lineage developing into erythro-myeloid progenitors (EMP) and the other lineage developing into HSPC. Interestingly, MCTCs derived from early CD34+c-kit+ cells exhibited strong histamine release and immune response functions. Particularly, robust release of IL-17 suggested that these early developing tissue-type MCTCs could play a central role in tumor immunity. These findings could help elucidate the mechanisms controlling early development of MCTCs and have significant therapeutic implications.
Collapse
Affiliation(s)
- Guohui Bian
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Yanzheng Gu
- Stem Cell Key Laboratory of Jiangsu Province, Institute of Medical Biotechnology, Suzhou University, Suzhou 215123, China
| | - Changlu Xu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China
| | - Wenyu Yang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China
| | - Xu Pan
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Yijin Chen
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Mowen Lai
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Ya Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Yong Dong
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Bin Mao
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Qiongxiu Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Bo Chen
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Tatsutoshi Nakathata
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Lihong Shi
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China
| | - Min Wu
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58203, USA
| | - Yonggang Zhang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Feng Ma
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China.,State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China
| |
Collapse
|
3
|
Zeng J, Zhang H, Liu Y, Sun W, Yi D, Zhu L, Zhang Y, Pan X, Chen Y, Zhou Y, Bian G, Lai M, Zhou Q, Liu J, Chen B, Ma F. Overexpression of p21 Has Inhibitory Effect on Human Hematopoiesis by Blocking Generation of CD43+ Cells via Cell-Cycle Regulation. Int J Stem Cells 2020; 13:202-211. [PMID: 32587134 PMCID: PMC7378898 DOI: 10.15283/ijsc20033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/07/2020] [Accepted: 05/15/2020] [Indexed: 12/12/2022] Open
Abstract
Background and Objectives p21, an important member of the Cip/Kip family, is involved in inhibitory effects of RUNX1b overexpression during the early stage of human hematopoiesis. Methods and Results We established a human embryonic stem cell (hESC) line with inducible expression of p21 (p21/hESCs). Overexpression of p21 did not influence either mesoderm induction or emergence of CD34+ cells, but it significantly decreased the production of CD43+ cells and changed the expression profile of hematopoiesis-related factors, leading to the negative effects of p21 on hematopoiesis. Conclusions In RUNX1b/hESC co-cultures when RUNX1b was induced from D0, perturbation of the cell cycle caused by upregulation of p21 probably prevented the appearance of CD43+ cells, but not CD34+ cells. The mechanisms via which CD34+ cells are blocked by RUNX1b overexpression remain to be elucidated.
Collapse
Affiliation(s)
- Jiahui Zeng
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Huifang Zhang
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Yuanling Liu
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Wencui Sun
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Danying Yi
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Lijiao Zhu
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Yonggang Zhang
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Xu Pan
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Yijing Chen
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Ya Zhou
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Guohui Bian
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Mowen Lai
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Qiongxiu Zhou
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Jiaxin Liu
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Bo Chen
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Feng Ma
- Research Center for Stem Cell Therapies, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China.,State Key Laboratory of Biotherapy, Sichuan University, Chengdu, China.,State Key Laboratory of Experimental Hematology, CAMS & PUMC, Tianjin, China
| |
Collapse
|
4
|
Dong Y, Bai J, Zhang Y, Zhou Y, Pan X, Li X, Zhou Q, Chen Y, Lai M, Mao B, Bian G, Feng J, Xie F, Chen B, Nakahata T, Zhang Y, Ma F. Alpha lipoic acid promotes development of hematopoietic progenitors derived from human embryonic stem cells by antagonizing ROS signals. J Leukoc Biol 2020; 108:1711-1725. [PMID: 32640500 PMCID: PMC7754144 DOI: 10.1002/jlb.1a0520-179r] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/18/2020] [Accepted: 06/10/2020] [Indexed: 12/14/2022] Open
Abstract
Antagonism of ROS signaling can inhibit cell apoptosis and autophagy, thus favoring the maintenance and expansion of hematopoietic stem cells. Alpha lipoic acid (ALA), a small antioxidant molecule, affects cell apoptosis by lowering the ROS level. In this study, we show that ALA promoted production of human pluripotent stem cells (hPSCs) derived hemogenic endothelial cells and hematopoietic stem/progenitor cells in vitro. Transcriptome analysis of hPSCs derived hemogenic endothelial cells showed that ALA promoted endothelial‐to‐hematopoietic transition by up‐regulating RUNX1, GFI1, GFI1B, MEIS2, and HIF1A and down‐regulating SOX17, TGFB1, TGFB2, TGFB3, TGFBR1, and TGFBR2. ALA also up‐regulated sensor genes of ROS signals, including HIF1A, FOXO1, FOXO3, ATM, PETEN, SIRT1, and SIRT3, during the process of hPSCs derived hemogenic endothelial cells generation. However, in more mature hPSC‐derived hematopoietic stem/progenitor cells, ALA reduced ROS levels and inhibited apoptosis. In particular, ALA enhanced development of hPSCs derived hematopoietic stem/progenitor cells by up‐regulating HIF1A in response to a hypoxic environment. Furthermore, addition of ALA in ex vivo culture greatly improved the maintenance of functional cord blood HSCs by in vivo transplantation assay. Our findings support the conjecture that ALA plays an important role in efficient regeneration of hematopoietic stem/progenitor cells from hPSCs and maintenance of functional HSCs, providing insight into understanding of regeneration of early hematopoiesis for engineering clinically useful hPSCs derived hematopoietic stem/progenitor cells transplantation. Thus, ALA can be used in the study of hPSCs derived HSCs.
Collapse
Affiliation(s)
- Yong Dong
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Ju Bai
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Yimeng Zhang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Ya Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Xu Pan
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Xiaohong Li
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Qiongxiu Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Yijin Chen
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Mowen Lai
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Bin Mao
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Guohui Bian
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Jia Feng
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Fangxin Xie
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Bo Chen
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Tatsutoshi Nakahata
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Yonggang Zhang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Feng Ma
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China.,State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, CAMS & PUMC, Tianjin, China
| |
Collapse
|
5
|
Sun W, Zeng J, Chang J, Xue Y, Zhang Y, Pan X, Zhou Y, Lai M, Bian G, Zhou Q, Liu J, Chen B, Ma F. RUNX1-205, a novel splice variant of the human RUNX1 gene, has blockage effect on mesoderm-hemogenesis transition and promotion effect during the late stage of hematopoiesis. J Mol Cell Biol 2020; 12:386-396. [PMID: 32313936 PMCID: PMC7288743 DOI: 10.1093/jmcb/mjaa019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/07/2019] [Accepted: 11/19/2019] [Indexed: 11/13/2022] Open
Abstract
Runt-related transcription factor 1 (RUNX1) is required for definitive hematopoiesis; however, the functions of most human RUNX1 isoforms are unclear. In particular, the effects of RUNX1-205 (a novel splice variant that lacks exon 6 in comparison with RUNX1b) on human hematopoiesis are not clear. In this study, a human embryonic stem cell (hESC) line with inducible RUNX1-205 overexpression was established. Analyses of these cells revealed that induction of RUNX1-205 overexpression at early stage did not influence the induction of mesoderm but blocked the emergence of CD34+ cells, and the production of hematopoietic stem/progenitor cells was significantly reduced. In addition, the expression of hematopoiesis-related factors was downregulated. However, these effects were abolished when RUNX1-205 overexpression was induced after Day 6 in co-cultures of hESCs and AGM-S3 cells, indicating that the inhibitory effect occurred prior to generation of hemogenic endothelial cells, while the promotive effect could be observed during the late stage of hematopoiesis. This is very similar to that of RUNX1b. Interestingly, the mRNA expression profile of RUNX1-205 during hematopoiesis was distinct from that of RUNX1b, and the protein stability of RUNX1-205 was much higher than that of RUNX1b. Thus, the function of RUNX1-205 in normal and diseased models should be further explored.
Collapse
Affiliation(s)
- Wencui Sun
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Jiahui Zeng
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Jing Chang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Yuan Xue
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Yonggang Zhang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Xu Pan
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Ya Zhou
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Mowen Lai
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Guohui Bian
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Qiongxiu Zhou
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Jiaxing Liu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Bo Chen
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Feng Ma
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China.,State Key Laboratory of Biotherapy, Sichuan University, Chengdu 61006, China.,State Key Laboratory of Experimental Hematology, CAMS & PUMC, Tianjin 300020, China
| |
Collapse
|
6
|
Ito S, Arita M, Haruyama J, Feng B, Chen WC, Namatame H, Taniguchi M, Cheng CM, Bian G, Tang SJ, Chiang TC, Sugino O, Komori F, Matsuda I. Surface-state Coulomb repulsion accelerates a metal-insulator transition in topological semimetal nanofilms. Sci Adv 2020; 6:eaaz5015. [PMID: 32219169 PMCID: PMC7083614 DOI: 10.1126/sciadv.aaz5015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/30/2019] [Indexed: 06/10/2023]
Abstract
The emergence of quantization at the nanoscale, the quantum size effect (QSE), allows flexible control of matter and is a rich source of advanced functionalities. A QSE-induced transition into an insulating phase in semimetallic nanofilms was predicted for bismuth a half-century ago and has regained new interest with regard to its surface states exhibiting nontrivial electronic topology. Here, we reveal an unexpected mechanism of the transition by high-resolution angle-resolved photoelectron spectroscopy combined with theoretical calculations. Anomalous evolution and degeneracy of quantized energy levels indicate that increased Coulomb repulsion from the surface states deforms a quantum confinement potential with decreasing thickness. The potential deformation strongly modulates spatial distributions of quantized wave functions, which leads to acceleration of the transition beyond the original QSE picture. This discovery establishes a complete picture of the long-discussed transition and highlights a new class of size effects dominating nanoscale transport in systems with metallic surface states.
Collapse
Affiliation(s)
- S. Ito
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba, Japan
| | - M. Arita
- Hiroshima Synchrotron Radiation Center (HSRC), Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - J. Haruyama
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba, Japan
| | - B. Feng
- Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - W.-C. Chen
- Department of Physics and Astronomy, National Tsing Hua University, Hsinchu, Taiwan, Republic of China
| | - H. Namatame
- Hiroshima Synchrotron Radiation Center (HSRC), Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - M. Taniguchi
- Hiroshima Synchrotron Radiation Center (HSRC), Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - C.-M. Cheng
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu, Taiwan, Republic of China
| | - G. Bian
- Department of Physics and Astronomy, University of Missouri, Columbia, MO, USA
| | - S.-J. Tang
- Department of Physics and Astronomy, National Tsing Hua University, Hsinchu, Taiwan, Republic of China
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu, Taiwan, Republic of China
| | - T.-C. Chiang
- Department of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - O. Sugino
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba, Japan
| | - F. Komori
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba, Japan
| | - I. Matsuda
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba, Japan
| |
Collapse
|
7
|
Chang J, Sun W, Zeng J, Xue Y, Zhang Y, Pan X, Zhou Y, Lai M, Bian G, Zhou Q, Liu J, Chen B, Guo F, Ma F. Establishment of an in vitro system based on AGM-S3 co-culture for screening traditional herbal medicines that stimulate hematopoiesis. J Ethnopharmacol 2019; 240:111938. [PMID: 31077780 DOI: 10.1016/j.jep.2019.111938] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 05/05/2019] [Accepted: 05/05/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Spatholobus suberectus Dunn is a traditional Chinese medicine (TCM) that can activate blood, dispel stasis, inhibit platelet aggregation, and stimulate hematopoiesis, and thereby treat anemia and diseases related to blood stasis syndrome (BSS). However, its hematopoiesis-stimulating activity is not well understood. AIM OF STUDY Four phenolic compounds (daidzein, formononetin, catechin, and procyandin B2) were isolated and purified from stems of S. suberectus, and tested using an in vitro hematopoiesis system. MATERIALS AND METHODS An AGM-S3 co-culture system for hematopoiesis derived from human embryonic stem cells (hESCs) was employed to explore effects on hematopoiesis. At different stages, extracts from Spatholobus suberectus Dunn were added to the co-culture system at concentrations of 2, 10, or 50 μM, and fluorescence-activated cell sorting (FACS), hematopoietic colony culturing, and quantitative reverse transcription PCR (qRT-PCR) were used to probe changes in hematopoietic progenitors and erythroid progenitors. RESULTS When H1 hESCs co-cultured with AGM-S3 were added along with 10 μM catechin from day 12 (D12), proliferation and differentiation of hematopoietic and erythroid progenitors from hESCs was increased based on FACS with antibodies recognizing CD34/CD45 and GPA/CD71. Hematopoiesis colony culturing further confirmed the promotion effect of catechin on hematopoiesis, and other active fractions did not significantly promote hematopoiesis. qRT-PCR revealed that some important genes related to hematopoiesis and erythroid were up-regulated followed catechin exposure. CONCLUSIONS Our results demonstrate that catechin, an active ingredient of Spatholobus suberectus Dunn, can increase the efficiency of hematopoiesis, including hematopoietic and erythroid progenitors, consistent with previous reports. The AGM-S3 co-culture system could provide an effective tool for screening active compounds in TCMs that promote hematopoiesis, and may be of clinical and pharmaceutical use.
Collapse
Affiliation(s)
- Jing Chang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Wencui Sun
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Jiahui Zeng
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Yuan Xue
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Yonggang Zhang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Xu Pan
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Ya Zhou
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Mowen Lai
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Guohui Bian
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Qiongxiu Zhou
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Jiaxing Liu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China
| | - Bo Chen
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China.
| | - Fujiang Guo
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Feng Ma
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, 610052, China; State Key Laboratory of Biotherapy, Sichuan University, Chengdu, 61006, China; State Key Laboratory of Experimental Hematology, CAMS & PUMC, Tianjin, 300020, China.
| |
Collapse
|
8
|
Mazza AR, Miettinen A, Daykin AA, He X, Charlton TR, Conrad M, Guha S, Lu Q, Bian G, Conrad EH, Miceli PF. Revealing interfacial disorder at the growth-front of thick many-layer epitaxial graphene on SiC: a complementary neutron and X-ray scattering investigation. Nanoscale 2019; 11:14434-14445. [PMID: 31334737 DOI: 10.1039/c9nr03504d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Epitaxial graphene on SiC provides both an excellent source of high-quality graphene as well as an architecture to support its application. Although single-layer graphene on Si-face SiC has garnered extensive interest, many-layer graphene produced on C-face SiC could be significantly more robust for enabling applications. Little is known, however, about the structural properties related to the growth evolution at the buried interface for thick many-layer graphene. Using complementary X-ray scattering and neutron reflectivity as well as electron microscopy, we demonstrate that thick many-layer epitaxial graphene exhibits two vastly different length-scales of the buried interface roughness as a consequence of the Si sublimation that produces the graphene. Over long lateral length-scales the roughness is extremely large (hundreds of Å) and it varies proportionally to the number of graphene layers. In contrast, over much shorter lateral length-scales we observe an atomically abrupt interface with SiC terraces. Graphene near the buried interface exhibits a slightly expanded interlayer spacing (∼1%) and fluctuations of this spacing, indicating a tendency for disorder near the growth front. Nevertheless, Dirac cones are observed from the graphene while its domain size routinely reaches micron length-scales, indicating the persistence of high-quality graphene beginning just a short distance away from the buried interface. Discovering and reconciling the different length-scales of roughness by reflectivity was complicated by strong diffuse scattering and we provide a detailed discussion of how these difficulties were resolved. The insight from this analysis will be useful for other highly rough interfaces among broad classes of thin-film materials.
Collapse
Affiliation(s)
- A R Mazza
- Department of Physics and Astronomy, University of Missouri, Columbia, Missouri, USA.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Zhou Y, Zhang Y, Chen B, Dong Y, Zhang Y, Mao B, Pan X, Lai M, Chen Y, Bian G, Zhou Q, Nakahata T, Zhou J, Wu M, Ma F. Overexpression of GATA2 Enhances Development and Maintenance of Human Embryonic Stem Cell-Derived Hematopoietic Stem Cell-like Progenitors. Stem Cell Reports 2019; 13:31-47. [PMID: 31178416 PMCID: PMC6626852 DOI: 10.1016/j.stemcr.2019.05.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 12/13/2022] Open
Abstract
GATA2 is essential for the endothelial-to-hematopoietic transition (EHT) and generation of hematopoietic stem cells (HSCs). It is poorly understood how GATA2 controls the development of human pluripotent stem cell (hPSC)-derived HS-like cells. Here, using human embryonic stem cells (hESCs) in which GATA2 overexpression was induced by doxycycline (Dox), we elucidated the dual functions of GATA2 in definitive hematopoiesis before and after the emergence of CD34+CD45+CD90+CD38- HS-like cells. Specifically, GATA2 promoted expansion of hemogenic precursors via the EHT and then helped to maintain HS-like cells in a quiescent state by regulating cell cycle. RNA sequencing showed that hPSC-derived HS-like cells were very similar to human fetal liver-derived HSCs. Our findings will help to elucidate the mechanism that controls the early stages of human definitive hematopoiesis and may help to develop a strategy to generate hPSC-derived HSCs.
Collapse
Affiliation(s)
- Ya Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Yonggang Zhang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China.
| | - Bo Chen
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Yong Dong
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Yimeng Zhang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Bin Mao
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Xu Pan
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Mowen Lai
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Yijin Chen
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Guohui Bian
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Qiongxiu Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Tatsutoshi Nakahata
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Jiaxi Zhou
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China
| | - Min Wu
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks ND 58203, USA
| | - Feng Ma
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China; State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China.
| |
Collapse
|
10
|
Chen B, Teng J, Liu H, Pan X, Zhou Y, Huang S, Lai M, Bian G, Mao B, Sun W, Zhou Q, Yang S, Nakahata T, Ma F. Inducible overexpression of RUNX1b/c in human embryonic stem cells blocks early hematopoiesis from mesoderm. J Mol Cell Biol 2018; 9:262-273. [PMID: 28992293 DOI: 10.1093/jmcb/mjx032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 08/12/2017] [Indexed: 12/16/2022] Open
Abstract
RUNX1 is absolutely required for definitive hematopoiesis, but the function of RUNX1b/c, two isoforms of human RUNX1, is unclear. We established inducible RUNX1b/c-overexpressing human embryonic stem cell (hESC) lines, in which RUNX1b/c overexpression prevented the emergence of CD34+ cells from early stage, thereby drastically reducing the production of hematopoietic stem/progenitor cells. Simultaneously, the expression of hematopoiesis-related factors was downregulated. However, such blockage effect disappeared from day 6 in hESC/AGM-S3 cell co-cultures, proving that the blockage occurred before the generation of hemogenic endothelial cells. This blockage was partially rescued by RepSox, an inhibitor of the transforming growth factor (TGF)-β signaling pathway, indicating a close relationship between RUNX1b/c and TGF-β pathway. Our results suggest a unique inhibitory function of RUNX1b/c in the development of early hematopoiesis and may aid further understanding of its biological function in normal and diseased models.
Collapse
Affiliation(s)
- B Chen
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Jiawen Teng
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Hongwei Liu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - X Pan
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Y Zhou
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Shu Huang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Mowen Lai
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Guohui Bian
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Bin Mao
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Wencui Sun
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Qiongxiu Zhou
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Shengyong Yang
- State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610065, China
| | - Tatsutoshi Nakahata
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Feng Ma
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
- State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610065, China
- State Key Laboratory of Experimental Hematology, CAMS & PUMC, Tianjin 300020, China
| |
Collapse
|
11
|
Liu J, Bian G, Sun D, Zhu W, Mao S. Starter feeding altered ruminal epithelial bacterial communities and some key immune-related genes' expression before weaning in lambs. J Anim Sci 2017; 95:910-921. [PMID: 28380582 DOI: 10.2527/jas.2016.0985] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
To characterize changes in ruminal epithelial bacterial communities and immune-related gene expression during concentrate starter feeding before weaning in lambs, 6 pairs of 10-d-old Hu lamb twins were selected: 1 kid received milk (M, = 6), and the other received milk plus starter (M+S, = 6). All lambs received hay and water ad libitum and were slaughtered at 56-d-old. Their rumen fluid was collected to determine ruminal pH and VFA levels; rumen epithelia were collected to characterize their bacterial communities using Illumina MiSeq sequencing and to determine mRNA expression of immune-related genes using quantitative real-time PCR (qRT-PCR). Results showed that starter feeding caused a decreased ruminal pH ( = 0.004) and increased concentrations of acetate, propionate, butyrate, and total VFA ( < 0.001). Principal coordinate analysis and analysis of molecular variance revealed that starter feeding affected ruminal epithelial bacterial communities in the lambs ( = 0.001), with higher relative abundance of dominant taxa , unclassified BS11 gut group, , unclassified Synergistaceae, , , , , and ( < 0.05) but lesser relative abundance of , unclassified Bacteroidales, unclassified Candidate, unclassified RF9, and ( < 0.05). Additionally, a phylogenetic investigation of communities by reconstruction of unobserved states analysis indicated that starter feeding markedly increased relative abundance values of dominant ruminal epithelial bacterial-inferred genes related to other ion-coupled transporters, pentose and glucuronate interconversions, glycosyltransferases, other glycan degradation, AA metabolism, sphingolipid metabolism, biotin metabolism, glycosphingolipid biosynthesis-globo series, and lysosome ( < 0.05) but decreased relative abundance values of genes related to carbon fixation pathways in prokaryotes and energy metabolism ( < 0.05) in the lambs. The qRT-PCR results showed that starter feeding decreased the relative mRNA expression of IL-6 ( = 0.003), IL-10 ( = 0.013), and interferon γ ( = 0.003). Collectively, this study showed that starter feeding could alter ruminal epithelial bacterial communities and some key immune-related genes' expression in preweaned lambs. All these responses of ruminal epithelial bacteria and the immune system would be beneficial for starter-fed lambs to be weaned.
Collapse
|
12
|
Liu J, Bian G, Sun D, Zhu W, Mao S. Starter feeding altered ruminal epithelial bacterial communities and some key immune-related genes’ expression before weaning in lambs. J Anim Sci 2017. [DOI: 10.2527/jas2016.0985] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
13
|
Mao B, Huang S, Lu X, Sun W, Zhou Y, Pan X, Yu J, Lai M, Chen B, Zhou Q, Mao S, Bian G, Zhou J, Nakahata T, Ma F. Early Development of Definitive Erythroblasts from Human Pluripotent Stem Cells Defined by Expression of Glycophorin A/CD235a, CD34, and CD36. Stem Cell Reports 2016; 7:869-883. [PMID: 27720903 PMCID: PMC5106477 DOI: 10.1016/j.stemcr.2016.09.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 09/02/2016] [Accepted: 09/05/2016] [Indexed: 12/22/2022] Open
Abstract
The development of human erythroid cells has been mostly examined in models of adult hematopoiesis, while their early derivation during embryonic and fetal stages is largely unknown. We observed the development and maturation of erythroblasts derived from human pluripotent stem cells (hPSCs) by an efficient co-culture system. These hPSC-derived early erythroblasts initially showed definitive characteristics with a glycophorin A+ (GPA+) CD34lowCD36− phenotype and were distinct from adult CD34+ cell-derived ones. After losing CD34 expression, early GPA+CD36− erythroblasts matured into GPA+CD36low/+ stage as the latter expressed higher levels of β-globin along with a gradual loss of mesodermal and endothelial properties, and terminally suppressed CD36. We establish a unique in vitro model to trace the early development of hPSC-derived erythroblasts by serial expression of CD34, GPA, and CD36. Our findings may provide insight into the understanding of human early erythropoiesis and, ultimately, therapeutic potential. The hPSC/AGM-S3 co-culture system generates considerable definitive erythroblasts hPSC-derived erythroblasts initiate from a unique GPA+CD34lowCD36− fraction Human early erythropoiesis can be traced by serial expression of CD34, GPA, and CD36
Collapse
Affiliation(s)
- Bin Mao
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Shu Huang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Xulin Lu
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Wencui Sun
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Ya Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Xu Pan
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Jinfeng Yu
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Mowen Lai
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Bo Chen
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Qiongxiu Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Song Mao
- Research Center for Stem Cell and Regenerative Medicine, Sichuan Neo-life Stem Cell Biotech Inc., Chengdu 610036, China
| | - Guohui Bian
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China
| | - Jiaxi Zhou
- State Key Lab of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China
| | - Tatsutoshi Nakahata
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Feng Ma
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China; State Key Lab of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China; State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610065, China.
| |
Collapse
|
14
|
Yang C, Bian G, Yang H, Zhang X, Chen L, Wang J. Development of High Hydrostatic Pressure Applied in Pathogen Inactivation for Plasma. PLoS One 2016; 11:e0161775. [PMID: 27561010 PMCID: PMC4999174 DOI: 10.1371/journal.pone.0161775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 08/11/2016] [Indexed: 01/20/2023] Open
Abstract
High hydrostatic pressure has been used to inactivate pathogens in foods for decades. There is a great potential to adapt this technology to inactivate pathogens in plasma and derivatives. To better evaluate the potential of this method, pathogen inoculated plasma samples were pressurized under different pressure application modes and temperatures. The inactivation efficacy of pathogens and activities of plasma proteins were monitored after treatment. The CFUs of E.coli was examined as the indicator of the inactivation efficiency. The factor V and VIII were chosen as the indicator of the plasma function. Preliminary experiments identified optimized treatment conditions: 200-250MPa, with 5×1 minute multi-pulsed high pressure at near 0°C (ice-water bath). Under this conditions, the inactivation efficacy of EMCV was >8.5log. The CFUs of E. coli were reduced by 7.5log, B. cereus were 8log. However, PPV and S. aureus cannot be inactivated efficiently. The activities of factor II, VII, IX, X, XI, XII, fibrinogen, IgG, IgM stayed over 95% compared to untreated. Factor V and VIII activity was maintained at 46–63% and 77–82%, respectively.
Collapse
Affiliation(s)
- Chunhui Yang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China
| | - Guohui Bian
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China
| | - Hong Yang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China
| | - Xinmin Zhang
- Zhengzhou Feilong medic devices Co., Ltd, Zhengzhou, Henan, China
| | - Limin Chen
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China
| | - Jingxing Wang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China
- * E-mail:
| |
Collapse
|
15
|
Xu SY, Belopolski I, Alidoust N, Neupane M, Bian G, Zhang C, Sankar R, Chang G, Yuan Z, Lee CC, Huang SM, Zheng H, Ma J, Sanchez DS, Wang B, Bansil A, Chou F, Shibayev PP, Lin H, Jia S, Hasan MZ. Discovery of a Weyl fermion semimetal and topological Fermi arcs. Science 2015; 349:613-7. [DOI: 10.1126/science.aaa9297] [Citation(s) in RCA: 2400] [Impact Index Per Article: 266.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 07/06/2015] [Indexed: 11/02/2022]
|
16
|
Abstract
BACKGROUND Killer cell immunoglobulin-like receptors (KIRs) show extensive variation in genetic content and allelic polymorphi sms among different populations. MATERIALS AND METHODS We analyzed the distribution of KIR genes in the Tibetan ethnic minority of Lhasa city, the Uyghur and Kazakh ethnic minorities of Urumqi city populations in China. Genotyping of 16 KIR genes was tested in 479 randomly selected individuals using the multiple PCR-SSP method. RESULTS A total of 42 KIR genotypes were detected, of which, 29 were predicted to be AB genotypes, 12 were BB genotypes and one was AA genotypes. 27 KIR genotypes were identified in Kazakhs, 30 KIR genotypes were identified in Uyghurs and 20 KIR genotypes were identified in Tibetans. The predominant genotype 1(AA genotypes) occurred most frequently in Tibetans (52.7%, 118/224), Kazakhs (43.2%, 54/125) and Uyghurs (34.9%, 45/130). Not only the four framework genes were present in all individuals, but the pseudogene 2DP1 could also be detected in all Uyghur individuals. Tibetans were different from Kazakh and Uyghur groups in KIR genetic content and KIR allelic variation. Intriguingly, Tibetans (29.5%, 66/224) had lower frequencies of 2DS4-v when compared with Uyghurs (60.8%, 79/130) and Kazakh s (59.2%, 74/125). Uyghurs (25.4%, 33/130) displayed higher frequencies of Bx genotypes with C4Tx (absence of KIR3DS1-2DL5-2DS5-2DS1) than both Kazakhs (11.2%, 14/125) and Tibetans (3.6%, 8/224). CONCLUSIONS The study showed that profile of KIR genotypes in three ethnic minority populations in China displayed ethnic diversity. It could be valuable for enriching the ethnical information resources for KIR gene, as well as facilitating further research on KIR-related diseases.
Collapse
Affiliation(s)
- Qiongxiu Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS and PUMC), 26 Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China.
| | - Jue Wang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS and PUMC), 26 Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China.
| | - Zhi He
- Urumqi Blood Center, Urumqi, China.
| | | | - Song Mao
- Sichuan Cord Blood Bank, Chengdu, China.
| | - Shu Huang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS and PUMC), 26 Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China.
| | - Guohui Bian
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS and PUMC), 26 Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China.
| | - Feng Ma
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS and PUMC), 26 Huacai Road, Longtan Industry Park, Chenghua District, Chengdu, 610052, China.
| |
Collapse
|
17
|
Zhou Y, Bian G, Zhou Q, Gao Z, Liao P, Liu Y, He M. Detection of cytomegalovirus, human parvovirus B19, and herpes simplex virus-1/2 in women with first-trimester spontaneous abortions. J Med Virol 2015; 87:1749-53. [DOI: 10.1002/jmv.24218] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Ya Zhou
- Institute of Blood Transfusion; Chinese Academy of Medical Sciences; Chengdu China
| | - Guohui Bian
- Institute of Blood Transfusion; Chinese Academy of Medical Sciences; Chengdu China
| | - Qiongxiu Zhou
- Institute of Blood Transfusion; Chinese Academy of Medical Sciences; Chengdu China
| | - Zhan Gao
- Institute of Blood Transfusion; Chinese Academy of Medical Sciences; Chengdu China
| | - Pu Liao
- The Third People's Hospital of Chongqing; Chongqing China
| | - Yu Liu
- Institute of Blood Transfusion; Chinese Academy of Medical Sciences; Chengdu China
| | - Miao He
- Institute of Blood Transfusion; Chinese Academy of Medical Sciences; Chengdu China
| |
Collapse
|
18
|
Li H, He M, Zeng P, Gao Z, Bian G, Yang C, Li W. The genomic and seroprevalence of human bocavirus in healthy Chinese plasma donors and plasma derivatives. Transfusion 2014; 55:154-63. [PMID: 25052026 DOI: 10.1111/trf.12785] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 05/18/2014] [Accepted: 05/27/2014] [Indexed: 12/16/2022]
Abstract
BACKGROUND Human bocavirus (HBoV) is a novel parvovirus identified in 2005. It has mostly been detected in respiratory and enteric infections and has not been studied large scale in blood products in relation to transfusion. STUDY DESIGN AND METHODS An in-house quantitative polymerase chain reaction (Q-PCR) was developed to test HBoV DNA in plasma and plasma derivatives. Plasma samples (n = 6096) collected from healthy donors, 241 plasma pools, and 326 plasma derivatives were screened for HBoV DNA by Q-PCR. Positive samples were confirmed by nested PCR and further amplified for sequence analysis and phylogenetic studies. The prevalence of immunoglobulin (Ig)G and IgM specific to HBoV structural proteins was measured by enzyme-linked immunosorbent assay in 209 samples grouped according to virus load (Group 1, HBoV DNA >10(4) copies/mL; Group 2, HBoV DNA >5 × 10(2) copies/mL but below 10(4) copies/mL; Group 3,HBoV DNA negative). RESULTS The genomic prevalence of HBoV in the plasma donors was 9.06%, ranging from 5.01 × 10(2) to 3.02 × 10(6) copies/mL. HBoV-specific IgG and IgM were detected at 20.00 and 7.50% in Group 1, at 20.29 and 2.90% in Group 2, and at 13.00 and 4.0% in Group 3, respectively. Phylogenetic analyses proved that HBoV Genotype 1 was the prevalent genotype in Chinese plasma donors. CONCLUSION Low levels of HBoV DNA were detectable at high prevalence in Chinese plasma donors and plasma derivatives. Further study is needed to determine whether HBoV screening is necessary.
Collapse
Affiliation(s)
- Hongxue Li
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | | | | | | | | | | | | |
Collapse
|
19
|
Zeng P, Liu Y, He M, Gao Z, Zhou Y, Bian G, Shan H, Wang J. HIV-1 genotypic diversity and prevalence of drug resistance among treatment naïve HIV-infected individuals in Chengdu of China. Virus Genes 2013; 47:408-13. [DOI: 10.1007/s11262-013-0958-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 07/09/2013] [Indexed: 10/26/2022]
|
20
|
Liu Y, Wang HH, Bian G, Zhang Z, Lee SS, Fenter PA, Tischler JZ, Hong H, Chiang TC. Interfacial bonding and structure of Bi2Te3 topological insulator films on Si(111) determined by surface x-ray scattering. Phys Rev Lett 2013; 110:226103. [PMID: 23767736 DOI: 10.1103/physrevlett.110.226103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 04/25/2013] [Indexed: 06/02/2023]
Abstract
Interfacial topological states are a key element of interest for topological insulator thin films, and their properties can depend sensitively on the atomic bonding configuration. We employ in situ nonresonant and resonant surface x-ray scattering to study the interfacial and internal structure of a prototypical topological film system: Bi2Te3 grown on Si(111). The results reveal a Te-dominated buffer layer, a large interfacial spacing, and a slightly relaxed and partially strained bottom quintuple layer of an otherwise properly stacked bulklike Bi2Te3 film. The presence of the buffer layer indicates a nontrivial process of interface formation and a mechanism for electronic decoupling between the topological film and the Si(111) substrate.
Collapse
Affiliation(s)
- Y Liu
- Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Liu Y, Bian G, Miller T, Chiang TC. Visualizing electronic chirality and Berry phases in graphene systems using photoemission with circularly polarized light. Phys Rev Lett 2011; 107:166803. [PMID: 22107416 DOI: 10.1103/physrevlett.107.166803] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Indexed: 05/31/2023]
Abstract
Electronic chirality near the Dirac point is a key property of graphene systems, which is revealed by the spectral intensity patterns as measured by angle-resolved photoemission spectroscopy under various polarization conditions. Specifically, the strongly modulated circular patterns for monolayer (bilayer) graphene rotate by ±90° (±45°) in changing from linearly to circularly polarized light; these angles are directly related to the phases of the wave functions and thus visually confirm the Berry's phase of π (2π) around the Dirac point. The details are verified by calculations.
Collapse
Affiliation(s)
- Y Liu
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | | | | | | |
Collapse
|
22
|
Bian G, Miller T, Chiang TC. Passage from spin-polarized surface states to unpolarized quantum well states in topologically nontrivial Sb films. Phys Rev Lett 2011; 107:036802. [PMID: 21838387 DOI: 10.1103/physrevlett.107.036802] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2011] [Indexed: 05/31/2023]
Abstract
Topological materials have unusual surface spin properties including a net surface spin current protected by the bulk symmetry properties. When such materials are reduced to thin films, their gapless spin-polarized surface states must connect, by analytic continuation, to bulk-derived quantum-well states, which are spin-unpolarized in centrosymmetric systems. The nature of this passage in a model system, Sb films, is investigated. Angle-resolved photoemission shows a smooth transition, while calculations elucidate the correlated evolution of the spin and charge distributions in real space.
Collapse
Affiliation(s)
- G Bian
- Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080, USA
| | | | | |
Collapse
|
23
|
Liu Y, Zhang L, Brinkley MK, Bian G, Miller T, Chiang TC. Phonon-induced gaps in graphene and graphite observed by angle-resolved photoemission. Phys Rev Lett 2010; 105:136804. [PMID: 21230798 DOI: 10.1103/physrevlett.105.136804] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Indexed: 05/30/2023]
Abstract
Mapping by angle-resolved photoemission spectroscopy of the spectral functions of graphite and graphene layers at low temperatures reveals a heretofore unreported gap of ~ 67 meV at normal emission. This gap persists to room temperature and beyond, and diminishes for increasing emission angles. We show that this gap arises from electronic coupling to out-of-plane vibrational modes at the K(¯) point in the surface Brillouin zone in accordance with conservation laws and selection rules governed by quantum mechanics. Our study suggests a new approach for characterizing phonons and electron-phonon coupling in solids.
Collapse
Affiliation(s)
- Y Liu
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | | | | | | | | | | |
Collapse
|
24
|
Bian G, Huang Q, Duan X, Li H, Wang X, Zhao H, Gu Y. D-11 A Combined Passive and Active Joints Robotic System for Photodynamic Therapy for Port Wine Stains. J Biomech 2010. [DOI: 10.1016/s0021-9290(10)70162-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
25
|
Zhao J, Lin W, Ma X, Lu Q, Ma X, Bian G, Jiang L. The protein kinase Hal5p is the high-copy suppressor of lithium-sensitive mutations of genes involved in the sporulation and meiosis as well as the ergosterol biosynthesis in Saccharomyces cerevisiae. Genomics 2010; 95:290-8. [PMID: 20206679 DOI: 10.1016/j.ygeno.2010.02.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 02/25/2010] [Accepted: 02/25/2010] [Indexed: 11/30/2022]
Abstract
From a genome-scale genetic screen, we have identified 114 lithium-sensitive and 6 lithium-tolerant gene mutations in Saccharomyces cerevisiae. Twenty-five of these identified lithium-sensitive mutations are of genes previously reported to be involved in sporulation and meiosis, whereas thirty-six of them are of genes involved in the vacuolar protein sorting (VPS) pathway, mainly functioning in the membrane docking and fusion. Accordingly, the lithium-sensitive phenotypes for one third of identified VPS mutants well correlate to their intracellular lithium contents in response to lithium stress. This indicates the integrity of the VPS pathway is critic for the ion homeostasis in yeast cells. The halotolerant protein kinase Hal5p, a regulator of the potassium transporter Trk1p, is shown to be the high-copy suppressor of nearly one third of identified lithium-sensitive mutations of genes involved in the sporulation and meiosis as well as in the biosynthesis of ergosterol. These results suggest that Hal5p-mediated ion homeostasis is important for these two biological processes.
Collapse
Affiliation(s)
- Jingwen Zhao
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | | | | | | | | | | | | |
Collapse
|
26
|
Xiao Y, Lv X, Cao G, Bian G, Duan J, Ai J, Sun H, Li Q, Yang Q, Chen T, Zhao D, Tan R, Liu Y, Wang Y, Zhang Z, Yang Y, Wei Y, Zhou Q. Overexpression of Trpp5 contributes to cell proliferation and apoptosis probably through involving calcium homeostasis. Mol Cell Biochem 2009; 339:155-61. [PMID: 20043191 DOI: 10.1007/s11010-009-0379-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2009] [Accepted: 12/21/2009] [Indexed: 02/05/2023]
Abstract
Trpp5 is one member of the polycystic kidney disease (PKD) family, which belongs to transient receptor potential (TRP) superfamily. Our previous study has shown that Trpp5 is developmentally expressed in mouse testis and overexpression of Trpp5 increases intracellular free calcium concentration in MDCK cells. However, the roles of this protein in cellular processes are largely unknown. Here, we demonstrated that Trpp5 resided in both cytoplasm and cell membrane of HEK293 cells. We found that overexpression of Trpp5 slightly increased the calcium current amplitude of HEK293 cells and shifted the reversal potential to a more negative value. Meanwhile, overexpression of Trpp5 suppressed proliferation of Hela cells via inhibiting DNA replication and induced apoptosis of Hela cells with morphological changes and accumulation of fragmented DNA. Collectively, these findings suggest that Trpp5 might involve calcium homeostasis contributing to cell proliferation and apoptosis.
Collapse
Affiliation(s)
- Yan Xiao
- Core Facility of Gene Engineered Mice, State Key Laboratory of Biotherapy, West China Hospital, West China School of Medicine, Sichuan University, 610041 Chengdu, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Yu B, Zhang M, Wu W, Chen L, Peng L, Bian G, Fu J, Fei C. Neoadjuvant chemoradiotherapy for locally advanced low-lying rectal cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15095 Objective: The aim of this trial was to explore the possibility of further improvement of efficacy in neoadjuvant chemoradiation for the treatment of locally advanced low-lying rectal cancer and the management of patients with clinical complete regression. Methods: 192 cases with locally advanced low-lying rectal cancer (T3/T4 or N+) received preoperative radiotherapy comprising 40–46 Gy/20–23 fractions and concomitant oral capecitabine 625 mg/m2 bid for 10 weeks prior to surgery. Curative resection with TME was carried out 6 weeks after the end of radiation. Results: Patients (pts) were recruited from May 2001 through August 2007. Overall, 117 pts (60.9%) experienced adverse events but only 2 suffered from grade 3 hand-foot syndrome. 17 pts (8.9%) had clinical complete tumor regression without surgery, 175 pts underwent curative resection including of 134 pts with low anterior resection (LAR), 32 pts with ultra-low anterior resection with Parks’ coloanal anastomosis and among them 6 pts with diverting temporary colostomy and 9 pts with APR. Sphincter preservation was achieved in 95.3%. Pathologically, 24 pts (12.5%) showed CR together with 17 pts with clinical CR; the overall CR rate was 21.4%. According to the pathological staging: T0N0 41 cases, T2N0 43 cases, T3N0 77 cases, T4N0 5 cases, T2N1 11 cases, T3N1 13 cases, T4N0 5 cases, and T4N1 2 cases; in semiquantitative Dworak's tumor regression grade, TRG0 8 pts,TRG1 32, TRG2 28,TRG3 83 and TRG4 41 with an overall tumor downstaging of 79.2%. There were no operative deaths, 5 pts suffered from rectovaginal fistulas and 4 anastomotic leakages with an overall anastomotic leakage rate of 5.1% (9/175) and all recovered without further events. All patients have been followed up for a median of 46 months (range 12–87). During the time, 11 pts had lung metastases, 6 liver metastases and 7 had local recurrences. The 3-year disease-free survival was 86.6% and overall survival was 92.6%. Conclusions: Neoadjuvant chemoradiotherapy has high efficacy resulting in tumor down-staging, increased resectability and sphincter preservation, and a reduction in local recurrences. Meanwhile those patients with clinical complete response can be followed up closely and safely without surgery. No significant financial relationships to disclose.
Collapse
Affiliation(s)
- B. Yu
- Rui Jin Hospital Medical School Shanghai Jiao Tong University, Shanghai, China; Shanghai No. 8 People's Hospital, Shanghai, China; Shanghai Sixth People's Hospital, Shanghai, China
| | - M. Zhang
- Rui Jin Hospital Medical School Shanghai Jiao Tong University, Shanghai, China; Shanghai No. 8 People's Hospital, Shanghai, China; Shanghai Sixth People's Hospital, Shanghai, China
| | - W. Wu
- Rui Jin Hospital Medical School Shanghai Jiao Tong University, Shanghai, China; Shanghai No. 8 People's Hospital, Shanghai, China; Shanghai Sixth People's Hospital, Shanghai, China
| | - L. Chen
- Rui Jin Hospital Medical School Shanghai Jiao Tong University, Shanghai, China; Shanghai No. 8 People's Hospital, Shanghai, China; Shanghai Sixth People's Hospital, Shanghai, China
| | - L. Peng
- Rui Jin Hospital Medical School Shanghai Jiao Tong University, Shanghai, China; Shanghai No. 8 People's Hospital, Shanghai, China; Shanghai Sixth People's Hospital, Shanghai, China
| | - G. Bian
- Rui Jin Hospital Medical School Shanghai Jiao Tong University, Shanghai, China; Shanghai No. 8 People's Hospital, Shanghai, China; Shanghai Sixth People's Hospital, Shanghai, China
| | - J. Fu
- Rui Jin Hospital Medical School Shanghai Jiao Tong University, Shanghai, China; Shanghai No. 8 People's Hospital, Shanghai, China; Shanghai Sixth People's Hospital, Shanghai, China
| | - C. Fei
- Rui Jin Hospital Medical School Shanghai Jiao Tong University, Shanghai, China; Shanghai No. 8 People's Hospital, Shanghai, China; Shanghai Sixth People's Hospital, Shanghai, China
| |
Collapse
|
28
|
Jiang Z, Zhang H, Chen J, Zhou J, Liu L, Bian G, Zhou Y, Chen Y. [Study on the needle biopsies of 100 prostatic adenocarcinoma]. Zhonghua Bing Li Xue Za Zhi 2000; 29:272-5. [PMID: 11866923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To study the morphological diagnostic criteria of prostatic adenocarcinoma in needle biopsy. METHODS 250 cases of prostatic needle biopsy including 100 cases of adenocarcinoma were observed retrospectively. The diagnostic significance of 20 parameters of morphological criteria including the architectural changes, cytologic features, invasion and some additional histologic features (intraepithelial neoplasm, intraluminal crystelloid body, intraluminal basophilic mucin secretion, collagen nodule and coagulative necrosis) were analyzed. RESULTS All 20 parameters of morphological criteria had practical significance in pathologic diagnosis, the most significant ones being architectural changes, prominent nucleoli, perineural and stromal invasion. CONCLUSION The diagnosis of prostatic adenocarcinoma is based on a constellation of cytologic and architectural features.
Collapse
Affiliation(s)
- Z Jiang
- Department of Pathology, Shanghai Sixth People's Hospital, Shanghai 200233, China
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Li Z, Jiang M, Bian G, Fu Y, Wei S. Effect of rhodium modification on structures of sulfided Rh-Mo-K/Al2O3 catalysts studied by XAFS. J Synchrotron Radiat 1999; 6:462-464. [PMID: 15263346 DOI: 10.1107/s0909049598017890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 12/17/1998] [Indexed: 05/24/2023]
|
30
|
|