8.2
CiteScore
6.6
Impact Factor

2023 Vol. 50, No. 10

Review
Key regulators of intestinal stem cells: diet, microbiota, and microbial metabolites
Chensi Yao, Xiaowen Gou, Chuanxi Tian, Lijuan Zhou, Rui Hao, Li Wan, Zeyu Wang, Min Li, Xiaolin Tong
2023, 50(10): 735-746. doi: 10.1016/j.jgg.2022.12.002
Abstract (159) PDF (18)
Abstract:
Interactions between diet and the intestinal microbiome play an important role in human health and disease development. It is well known that such interactions, whether direct or indirect, trigger a series of metabolic reactions in the body. Evidence suggests that intestinal stem cells (ISCs), which are phenotypic precursors of various intestinal epithelial cells, play a significant role in the regulation of intestinal barrier function and homeostasis. The advent and evolution of intestinal organoid culture techniques have presented a key opportunity to study the association between the intestinal microenvironment and ISCs. As a result, the effects exerted by dietary factors, intestinal microbiomes, and their metabolites on the metabolic regulation of ISCs and the potential mechanisms underlying such effects are being gradually revealed. This review summarises the effects of different dietary patterns on the behaviour and functioning of ISCs and focuses on the crosstalk between intestinal microbiota, related metabolites, and ISCs, with the aim of fully understanding the relationship between these three factors and providing further insights into the complex mechanisms associated with ISCs in the human body. Gaining an understanding of these mechanisms may lead to the development of novel dietary interventions or drugs conducive to intestinal health.
Original research
GAEP: a comprehensive genome assembly evaluating pipeline
Yong Zhang, Hong-Wei Lu, Jue Ruan
2023, 50(10): 747-754. doi: 10.1016/j.jgg.2023.05.009
Abstract (242) PDF (39)
Abstract:
With the rapid development of sequencing technologies, especially the maturity of third-generation sequencing technologies, there has been a significant increase in the number and quality of published genome assemblies. The emergence of these high-quality genomes has raised higher requirements for genome evaluation. Although numerous computational methods have been developed to evaluate assembly quality from various perspectives, the selective use of these evaluation methods can be arbitrary and inconvenient for fairly comparing the assembly quality. To address this issue, we have developed the Genome Assembly Evaluating Pipeline (GAEP), which provides a comprehensive assessment pipeline for evaluating genome quality from multiple perspectives, including continuity, completeness, and correctness. Additionally, GAEP includes new functions for detecting misassemblies and evaluating the assembly redundancy, which performs well in our testing. GAEP is publicly available at https://github.com/zy-optimistic/GAEP under the GPL3.0 License. With GAEP, users can quickly obtain accurate and reliable evaluation results, facilitating the comparison and selection of high-quality genome assemblies.
The CCT transcriptional activator Ghd2 constantly delays the heading date by upregulating CO3 in rice
Xiaowei Fan, Pengfei Wang, Feixiang Qi, Yong Hu, Shuangle Li, Jia Zhang, Liwen Liang, Zhanyi Zhang, Juhong Liu, Lizhong Xiong, Yongzhong Xing
2023, 50(10): 755-764. doi: 10.1016/j.jgg.2023.03.002
Abstract (280) PDF (31)
Abstract:
CONSTANS, CO-like, and TOC1 (CCT) family genes play important roles in regulating heading date, which exerts a large impact on the regional and seasonal adaptation of rice. Previous studies have shown that Grain number, plant height, and heading date2 (Ghd2) exhibits a negative response to drought stress by directly upregulating Rubisco activase and exerting a negative effect on heading date. However, the target gene of Ghd2 regulating heading date is still unknown. In this study, CO3 is identified by analyzing Ghd2 ChIP-seq data. Ghd2 activates CO3 expression by binding to the CO3 promoter through its CCT domain. EMSA experiments show that the motif CCACTA in the CO3 promoter was recognized by Ghd2. A comparison of the heading dates among plants with CO3 knocked out or overexpressed and double-mutants with Ghd2 overexpressed and CO3 knocked out shows that CO3 negatively and constantly regulates flowering by repressing the transcription of Ehd1, Hd3a, and RFT1. In addition, the target genes of CO3 are explored via a comprehensive analysis of DAP-seq and RNA-seq data. Taken together, these results suggest that Ghd2 directly binds to the downstream gene CO3, and the Ghd2-CO3 module constantly delays heading date via the Ehd1-mediated pathway.
Maternal genetic history of ancient Tibetans over the past 4000 years
Ganyu Zhang, Can Cui, Shargan Wangdue, Hongliang Lu, Honghai Chen, Lin Xi, Wei He, Haibing Yuan, Tinley Tsring, Zujun Chen, Feng Yang, Tashi Tsering, Shuai Li, Norbu Tashi, Tsho Yang, Yan Tong, Xiaohong Wu, Linhui Li, Yuanhong He, Peng Cao, Qingyan Dai, Feng Liu, Xiaotian Feng, Tianyi Wang, Ruowei Yang, Wanjing Ping, Ming Zhang, Xing Gao, Yichen Liu, Wenjun Wang, Qiaomei Fu
2023, 50(10): 765-775. doi: 10.1016/j.jgg.2023.03.007
Abstract (197) PDF (15)
Abstract:
The settlement of the Tibetan Plateau epitomizes human adaptation to a high-altitude environment that poses great challenges to human activity. Here, we reconstruct a 4000-year maternal genetic history of Tibetans using 128 ancient mitochondrial genome data from 37 sites in Tibet. The phylogeny of haplotypes M9a1a, M9a1b, D4g2, G2a'c, and D4i show that ancient Tibetans share the most recent common ancestor with ancient Middle and Upper Yellow River populations around the Early and Middle Holocene. In addition, the connections between Tibetans and Northeastern Asians vary over the past 4000 years, with a stronger matrilineal connection between the two during 4000 BP-3000 BP, and a weakened connection after 3000 BP, that are coincident with climate change, followed by a reinforced connection after the Tubo period (1400 BP-1100 BP). Besides, an over 4000-year matrilineal continuity is observed in some of the maternal lineages. We also find the maternal genetic structure of ancient Tibetans is correlated to the geography and interactions between ancient Tibetans and ancient Nepal and Pakistan populations. Overall, the maternal genetic history of Tibetans can be characterized as a long-term matrilineal continuity with frequent internal and external population interactions that are dynamically shaped by geography, climate changes, as well as historical events.
The local density of H3K9me3 dictates the stability of HP1α condensates-mediated genomic interactions
Ying Feng, Li Guo, Chen Yang, Hui Zheng, Xiao Xiao, Hanhui Ma
2023, 50(10): 776-785. doi: 10.1016/j.jgg.2023.04.006
Abstract (154) PDF (14)
Abstract:
The human genome can be demarcated into domains based on distinct epigenetic states. The trimethylation of histone H3 lysine 9 (H3K9me3) is essential for the formation of constitutive heterochromatin nanodomains. However, the extent to which genomic regions require specific densities or degrees of H3K9me3 for stable interactions remains unclear. Here, we utilize CRISPR-based DNA imaging to investigate the role of endogenous or ectopic H3K9me3 in chromatin dynamics and genomic interactions. We select three loci (IDR3, TCF3, and PR1) with distinct levels of H3K9me3 to examine the genomic interactions and association with endogenous Heterochromatin Protein 1 (HP1α) condensates. Our results demonstrate a positive correlation between the levels of H3K9me3 at the loci and their association with HP1α condensates. By dual-color labeling and long-term tracking of IDR3 and PR1 loci, we find a periodical association between the two ranging from one to three hours. Epigenetic perturbation-induced Genome organization (EpiGo)-KRAB introduces ~20 kilobases of H3K9me3 at the TCF3 locus, which is sufficient to establish a stable association between TCF3 and HP1α condensates. In addition, EpiGo-mediated H3K9me3 also leads to stable genomic interaction between IDR3 and TCF3. Briefly, these data suggest that the density of H3K9me3 could dictate the stability of interactions between genomic loci and HP1α condensates.
Species- or genus-dependent immunostimulatory effects of gut-derived potential probiotics
Saisai Feng, Shunhe Wang, Dingwu Qu, Jing Li, Fengwei Tian, Leilei Yu, Hao Zhang, Jianxin Zhao, Wei Chen, Qixiao Zhai
2023, 50(10): 786-794. doi: 10.1016/j.jgg.2022.11.001
Abstract (169) PDF (12)
Abstract:
The immune regulatory effects of probiotics have been widely recognized to be strain-specific. However, it is unknown if there is a species- or genus-dependent manner. In this study, we use an in vitro mesenteric lymph node (MLN) model to systematically evaluate the immunostimulatory effects of gut-derived potential probiotics. The results exhibit an obvious species or genus consensus immune response pattern. RNA-seq shows that T cell-dependent B cell activation and antibody responses may be inherent to this model. Of the five tested genera, Akkermansia spp. and Clostridium butyrium directly activate the immune response in vitro, as indicated by the secretion of interleukin-10. Bifidobacterium spp. and Bacteroides spp. activate immune response with the help of stimuli (anti-CD3 and anti-CD28 antibodies). Lactobacillus spp. blunt the immune response with or without stimuli. Further investigations show that the cell surface protein of A. muciniphila AH39, which may serve as a T cell receptor cognate antigen, might evoke an in vitro immune activation. In vivo, oral administration of A. muciniphila AH39 influences the proportion of T regulatory cells (Tregs) in MLNs and the spleen under homeostasis in both specific pathogen-free and germ-free mice. All these findings indicate the distinct effects of different genera or species of potential gut-derived probiotics on intestinal and systemic immunity.
Research communications
Integrating genome-wide association study with multi-tissue transcriptome analysis provides insights into the genetic architecture of teat traits in pigs
Chen Wei, Xiaodian Cai, Shuqi Diao, Jinyan Teng, Zhiting Xu, Wenjing Zhang, Haonan Zeng, Zhanming Zhong, Xibo Wu, Yahui Gao, Jiaqi Li, Zhe Zhang
2023, 50(10): 795-798. doi: 10.1016/j.jgg.2023.07.003
Abstract (287) PDF (36)
Abstract:
Genomic allele-specific base editing with imperfect gRNA
Xuxu Chen, Dongdong Zhao, Xueting Hou, Ju Li, Shiming Pu, Jidong Fei, Siwei Li, Zuping Zhou, Changhao Bi, Xueli Zhang
2023, 50(10): 799-802. doi: 10.1016/j.jgg.2023.05.010
Abstract (117) PDF (11)
Abstract:
Tongue-coating microbiome reflects cardiovascular health and determines outcome in blood pressure intervention
Hairong Chen, Yue Ma, Min Li, Qingwei Li, Mengya Zhang, Zixiong Wang, Hongmei Liu, Jun Wang, Xiaolin Tong, Yixin Zeng
2023, 50(10): 803-806. doi: 10.1016/j.jgg.2023.01.003
Abstract (159) PDF (7)
Abstract:
Differential regulation of JAK1 expression by ETS1 associated with predisposition to primary biliary cholangitis
Peng Jiang, Chan Wang, Mingming Zhang, Ye Tian, Weifeng Zhao, Junyi Xin, Yexi Huang, Zhibin Zhao, Wenjuan Sun, Jie Long, Ruqi Tang, Fang Qiu, Xingjuan Shi, Yi Zhao, Li Zhu, Na Dai, Lei Liu, Xudong Wu, Jinshan Nie, Bo Jiang, Youlin Shao, Yueqiu Gao, Jianjiang Yu, Zhigang Hu, Zhidong Zang, Yuhua Gong, Yaping Dai, Lan Wang, Ningling Ding, Ping Xu, Sufang Chen, Lu Wang, Jing Xu, Luyao Zhang, Junyan Hong, Ruonan Qian, Hu Li, Xuan Jiang, Congwei Chen, Wenyan Tian, Jian Wu, Yuzhang Jiang, Chongxu Han, Kui Zhang, Hong Qiu, Li Li, Hong Fan, Liming Chen, Jianqiong Zhang, Zhongsheng Sun, Xiao Han, Zhenhua Dai, Erguang Li, M. Eric Gershwin, Zhexiong Lian, Xiong Ma, Michael F. Seldin, Weichang Chen, Meilin Wang, Xiangdong Liu
2023, 50(10): 807-812. doi: 10.1016/j.jgg.2023.06.004
Abstract (195) PDF (10)
Abstract:
Corrigendum
Corrigendum to “CRISPR-detector: fast and accurate detection, visualization, and annotation of genome-wide mutations induced by genome editing events” [Journal of Genetics and Genomics (2023) 563-572]
Lei Huang, Dan Wang, Haodong Chen, Jinnan Hu, Xuechen Dai, Chuan Liu, Anduo Li, Xuechun Shen, Chen Qi, Haixi Sun, Dengwei Zhang, Tong Chen, Yuan Jiang
2023, 50(10): 813-813. doi: 10.1016/j.jgg.2023.09.008
Abstract (0) PDF (0)
Abstract: