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Wei G. RNA m6A modification, signals for degradation or stabilisation? Biochem Soc Trans 2024; 52:707-717. [PMID: 38629637 PMCID: PMC11088905 DOI: 10.1042/bst20230574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 12/01/2023] [Revised: 03/24/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024]
Abstract
The RNA modification N6-methyladenosine (m6A) is conserved across eukaryotes, and profoundly influences RNA metabolism, including regulating RNA stability. METTL3 and METTL14, together with several accessory components, form a 'writer' complex catalysing m6A modification. Conversely, FTO and ALKBH5 function as demethylases, rendering m6A dynamic. Key to understanding the functional significance of m6A is its 'reader' proteins, exemplified by YTH-domain-containing proteins (YTHDFs) canonical reader and insulin-like growth factor 2 mRNA-binding proteins (IGF2BPs) non-canonical reader. These proteins play a crucial role in determining RNA stability: YTHDFs mainly promote mRNA degradation through different cytoplasmic pathways, whereas IGF2BPs function to maintain mRNA stability. Additionally, YTHDC1 functions within the nucleus to degrade or protect certain m6A-containing RNAs, and other non-canonical readers also contribute to RNA stability regulation. Notably, m6A regulates retrotransposon LINE1 RNA stability and/or transcription via multiple mechanisms. However, conflicting observations underscore the complexities underlying m6A's regulation of RNA stability depending upon the RNA sequence/structure context, developmental stage, and/or cellular environment. Understanding the interplay between m6A and other RNA regulatory elements is pivotal in deciphering the multifaceted roles m6A plays in RNA stability regulation and broader cellular biology.
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Affiliation(s)
- Guifeng Wei
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, U.K
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2
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Gao Z, Lin J, Hong P, Hu Z, Dong J, Shi Q, Tian X, Liu F, Wei G. [Identification of key genes in Wilms tumor based on high-throughput RNA sequencing and their impacts on prognosis and immune responses]. Nan Fang Yi Ke Da Xue Xue Bao 2024; 44:727-738. [PMID: 38708507 DOI: 10.12122/j.issn.1673-4254.2024.04.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
OBJECTIVE To identify the key genes differentially expressed in Wilms tumor and analyze their potential impacts on prognosis and immune responses of the patients. METHODS High-throughput RNA sequencing was used to identify the differentially expressed mRNAs in clinical samples of Wilms tumor and paired normal tissues, and their biological functions were analyzed using GO, KEGG and GSEA enrichment analyses. The hub genes were identified using STRING database, based on which a prognostic model was constructed using LASSO regression. The mutations of the key hub genes were analyzed and their impacts on immunotherapy efficacy was predicted using the cBioPortal platform. RT-qPCR was used to verify the differential expressions of the key hub genes in Wilms tumor. RESULTS Of the 1612 differentially expressed genes identified in Wilms tumor, 1030 were up-regulated and 582 were down-regulated, involving mainly cell cycle processes and immune responses. Ten hub genes were identified, among which 4 genes (TP53, MED1, CCNB1 and EGF) were closely related to the survival of children with Wilms tumor. A 3-gene prognostic signature was constructed through LASSO regression analysis, and the patients stratified into with high- and low-risk groups based on this signature had significantly different survival outcomes (HR=1.814, log-rank P=0.002). The AUCs of the 3-, 5- and 7-year survival ROC curves of this model were all greater than 0.7. The overall mutations in the key hub genes or the individual mutations in TP53/CCNB1 were strongly correlated with a lower survival rates, and a high TP53 expression was correlated with a poor immunotherapy efficacy. RT-qPCR confirmed that the key hub genes had significant differential expressions in Wilms tumor tissues and cells. CONCLUSION TP53 gene plays an important role in the Wilms tumor and may potentially serve as a new immunotherapeutic biomarker as well as a therapeutic target.
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Affiliation(s)
- Z Gao
- Department of Urological Surgery, Children's Hospital of Chongqing Medical University; National Clinical Research Center for Child Health and Disorders; Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Structural Birth Defect and Reconstruction, Chongqing 400014, China
| | - J Lin
- Department of Urological Surgery, Children's Hospital of Chongqing Medical University; National Clinical Research Center for Child Health and Disorders; Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Structural Birth Defect and Reconstruction, Chongqing 400014, China
| | - P Hong
- Department of Urological Surgery, Children's Hospital of Chongqing Medical University; National Clinical Research Center for Child Health and Disorders; Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Structural Birth Defect and Reconstruction, Chongqing 400014, China
| | - Z Hu
- Department of Urological Surgery, Children's Hospital of Chongqing Medical University; National Clinical Research Center for Child Health and Disorders; Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Structural Birth Defect and Reconstruction, Chongqing 400014, China
| | - J Dong
- Department of Urological Surgery, Children's Hospital of Chongqing Medical University; National Clinical Research Center for Child Health and Disorders; Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Structural Birth Defect and Reconstruction, Chongqing 400014, China
| | - Q Shi
- Department of Urological Surgery, Children's Hospital of Chongqing Medical University; National Clinical Research Center for Child Health and Disorders; Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Structural Birth Defect and Reconstruction, Chongqing 400014, China
| | - X Tian
- Department of Urological Surgery, Children's Hospital of Chongqing Medical University; National Clinical Research Center for Child Health and Disorders; Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Structural Birth Defect and Reconstruction, Chongqing 400014, China
| | - F Liu
- Department of Urological Surgery, Children's Hospital of Chongqing Medical University; National Clinical Research Center for Child Health and Disorders; Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Structural Birth Defect and Reconstruction, Chongqing 400014, China
| | - G Wei
- Department of Urological Surgery, Children's Hospital of Chongqing Medical University; National Clinical Research Center for Child Health and Disorders; Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Structural Birth Defect and Reconstruction, Chongqing 400014, China
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Liang Y, Wei F, Qin S, Li M, Hu Y, Lin Y, Wei G, Wei K, Miao J, Zhang Z. Sophora tonkinensis: response and adaptation of physiological characteristics, functional traits, and secondary metabolites to drought stress. Plant Biol (Stuttg) 2023; 25:1109-1120. [PMID: 37815250 DOI: 10.1111/plb.13578] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/21/2023] [Indexed: 10/11/2023]
Abstract
The medicinal plant Sophora tonkinensis is a characteristic Chinese shrub of karst areas. The arid climate in karst areas produces high-quality S. tonkinensis; however, the mechanisms of drought tolerance are not clear, which restricts sustainable plantings of S. tonkinensis. This study involved a 20-day drought stress experiment with potted S. tonkinensis and threee soil water regimes: control (CK), mild drought (MDT), and severe drought (SDT). Plant morphology, biomass, physiological indicators, alkaloid content, and other changes under drought stress were monitored. The content of soluble sugars and proteins, and activity of antioxidant enzymes in leaves and roots were higher under drought than CK, indicating that S. tonkinensis is tolerant to osmotic stress in early drought stages. Content of matrine and oxymatrine increased gradually with increasing drought duration in the short term. The epidermis of S. tonkinensis leaves have characteristics of desert plants, including upper epidermal waxy layer, lower epidermal villi, and relatively sunken stomata, suggesting that S. tonkinensis has strong drought tolerance. In conclusion, drought stress changed the cell structure of S. tonkinensis, induced antioxidant enzyme activity and increased its resistance to drought.
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Affiliation(s)
- Y Liang
- National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - F Wei
- National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - S Qin
- National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - M Li
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Y Hu
- National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Y Lin
- National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - G Wei
- National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - K Wei
- National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - J Miao
- National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Z Zhang
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
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4
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Kong Y, Jiang C, Wei G, Sun K, Wang R, Qiu T. Small Molecule Inhibitors as Therapeutic Agents Targeting Oncogenic Fusion Proteins: Current Status and Clinical. Molecules 2023; 28:4672. [PMID: 37375228 DOI: 10.3390/molecules28124672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 05/30/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Oncogenic fusion proteins, arising from chromosomal rearrangements, have emerged as prominent drivers of tumorigenesis and crucial therapeutic targets in cancer research. In recent years, the potential of small molecular inhibitors in selectively targeting fusion proteins has exhibited significant prospects, offering a novel approach to combat malignancies harboring these aberrant molecular entities. This review provides a comprehensive overview of the current state of small molecular inhibitors as therapeutic agents for oncogenic fusion proteins. We discuss the rationale for targeting fusion proteins, elucidate the mechanism of action of inhibitors, assess the challenges associated with their utilization, and provide a summary of the clinical progress achieved thus far. The objective is to provide the medicinal community with current and pertinent information and to expedite the drug discovery programs in this area.
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Affiliation(s)
- Yichao Kong
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Caihong Jiang
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Guifeng Wei
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Kai Sun
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Ruijie Wang
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Ting Qiu
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
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Abstract
Aging is associated with skeletal muscle strength decline and cardiac diastolic dysfunction. The structural arrangements of the sarcomeric proteins, such as myosin binding protein-C (MyBP-C) are shown to be pivotal in the pathogenesis of diastolic dysfunction. Yet, the role of fast (fMyBP-C) and slow (sMyBP-C) skeletal muscle MyBP-C remains to be elucidated. Herein, we aimed to characterize MyBP-C and its paralogs in the fast tibialis anterior (TA) muscle from adult and old mice. Immunoreactivity preparations showed that the relative abundance of the fMyBP-C paralog was greater in the TA of both adult and old, but no differences were noted between groups. We further found that the expression level of cardiac myosin binding protein-C (cMyBP-C), an important modulator of cardiac output, was lowered by age. Standard SDS-PAGE along with Pro-Q Diamond phosphoprotein staining did not identify age-related changes in phosphorylated MyBP-C proteins from TA and cardiac muscles; however, it revealed that MyBP-C paralogs in fast skeletal and cardiac muscle were highly phosphorylated. Mass spectrometry further identified glycogen phosphorylase, desmin, actin, troponin T, and myosin regulatory light chain 2 as phosphorylated myofilament proteins in both ages. MyBP-C protein-bound carbonyls were determined using anti-DNP immunostaining and found the carbonyl level of fMyBP-C, sMyBP-C, and cMyBP-C to be similar between old and adult animals. In summary, our data showed some differences regarding the MyBP-C paralog expression and identified an age-related reduction of cMyBP-C expression. Future studies are needed to elucidate which are the age-driven post-translational modifications in the MyBP-C paralogs.
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Affiliation(s)
- L. R. Perazza
- Department of Physical Therapy, College of Health & Rehabilitation Sciences: Sargent College, Boston University, 635 Commonwealth Ave, Boston, MA 02215 USA
| | - G. Wei
- Department of Physical Therapy, College of Health & Rehabilitation Sciences: Sargent College, Boston University, 635 Commonwealth Ave, Boston, MA 02215 USA
| | - L. V. Thompson
- Department of Physical Therapy, College of Health & Rehabilitation Sciences: Sargent College, Boston University, 635 Commonwealth Ave, Boston, MA 02215 USA
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6
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Wei G, Hanlon K, Correa-Selm L, Gonzalez-Estrada A. REFLECTANCE CONFOCAL MICROSCOPY OF ALLERGIC CONTACT DERMATITIS TO MANGO SAP (MANGIFERA INDICA). Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Lin Y, Qiu T, Wei G, Que Y, Wang W, Kong Y, Xie T, Chen X. Role of Histone Post-Translational Modifications in Inflammatory Diseases. Front Immunol 2022; 13:852272. [PMID: 35280995 PMCID: PMC8908311 DOI: 10.3389/fimmu.2022.852272] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [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: 01/11/2022] [Accepted: 01/24/2022] [Indexed: 12/12/2022] Open
Abstract
Inflammation is a defensive reaction for external stimuli to the human body and generally accompanied by immune responses, which is associated with multiple diseases such as atherosclerosis, type 2 diabetes, Alzheimer’s disease, psoriasis, asthma, chronic lung diseases, inflammatory bowel disease, and multiple virus-associated diseases. Epigenetic mechanisms have been demonstrated to play a key role in the regulation of inflammation. Common epigenetic regulations are DNA methylation, histone modifications, and non-coding RNA expression; among these, histone modifications embrace various post-modifications including acetylation, methylation, phosphorylation, ubiquitination, and ADP ribosylation. This review focuses on the significant role of histone modifications in the progression of inflammatory diseases, providing the potential target for clinical therapy of inflammation-associated diseases.
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Affiliation(s)
- Yingying Lin
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China.,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Ting Qiu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China.,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Guifeng Wei
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China.,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Yueyue Que
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China.,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Wenxin Wang
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China.,Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yichao Kong
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China.,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Tian Xie
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China.,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Xiabin Chen
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China.,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
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8
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zhang Y, Huan F, Feng X, Lu F, Li Z, Wei G, Li W, Li H. PO-1836 The Clinical Effectiveness of SGRT on Extremities Patients: Accuracy and Potential Margins Reduction. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03799-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Feng X, Huan F, Chen H, Lu F, Li Z, Li H, Li W, Wei G, Wan B, Zhang Y, Jing H, Wang S. PO-1874 Evaluating the use of SGRT in supraclavicular fossa positioning of mastectomy patients. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03837-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Ma N, Abaker J, Wei G, Chen H, Shen X, Chang G. A high-concentrate diet induces an inflammatory response and oxidative stress and depresses milk fat synthesis in the mammary gland of dairy cows. J Dairy Sci 2022; 105:5493-5505. [DOI: 10.3168/jds.2021-21066] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 01/13/2022] [Indexed: 11/19/2022]
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McManus CE, Mazzetto M, Wei G, Han M, Reinke V. The zinc-finger protein OEF-1 stabilizes histone modification patterns and promotes efficient splicing in the C. elegans germ line. G3 (Bethesda) 2021; 11:6370151. [PMID: 34519784 PMCID: PMC8664474 DOI: 10.1093/g3journal/jkab329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 09/07/2021] [Indexed: 12/03/2022]
Abstract
To ensure stable transmission of genetic information to the next generation, germ cells frequently silence sex chromosomes, as well as autosomal loci that promote inappropriate differentiation programs. In Caenorhabditis elegans, silenced and active genomic domains are established in germ cells by the histone modification complexes MES-2/3/6 and MES-4, which promote silent and active chromatin states, respectively. These states are generally mutually exclusive and modulation of one state influences the pattern of the other. Here, we identify the zinc-finger protein OEF-1 as a novel modifier of this epigenetic balance in the C. elegans germline. Loss of oef-1 genetically enhances mes mutant phenotypes. Moreover, OEF-1 binding correlates with the active modification H3K36me3 and sustains H3K36me3 levels in the absence of MES-4 activity. OEF-1 also promotes efficient mRNA splicing activity, a process that is influenced by H3K36me3 levels. Finally, OEF-1 limits deposition of the silencing modification H3K27me3 on the X chromosome and at repressed autosomal loci. We propose that OEF-1 might act as an intermediary to mediate the downstream effects of H3K36me3 that promote transcript integrity, and indirectly affect gene silencing as a consequence.
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Affiliation(s)
- Catherine E McManus
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Mariateresa Mazzetto
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Guifeng Wei
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, UK
| | - Mei Han
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Valerie Reinke
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA
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12
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Wei G, Wang L, Wan X, Tan Y. [ELF4 promotes proliferation and inhibits apoptosis of human insulinoma cells by activating Akt signaling]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1329-1333. [PMID: 34658346 DOI: 10.12122/j.issn.1673-4254.2021.09.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the effect of overexpression of the oncogenic transcription factor ELF4 on proliferation and apoptosis in human insulinoma cells and explore the underlying mechanism. METHODS A human insulinoma BON cell line with stable overexpression of ELF4 (BON-ELF4 cells) was constructed using a recombinant retrovirus vector and the expression of ELF4 protein was verified using Western blotting. MTT assay was used to assess the proliferation of BON-ELF4 cells and BON-Vector cells, and the cell apoptosis induced by treatment with epirubicin (0.1 μmol/L for 24 h) was analyzed by detecting the expressions of cleaved caspase-8, caspase-9, and PARP using Western blotting. Flow cytometry with Annexin VFITC/PI staining was performed to analyze the numbers of apoptotic BON-Vector or BON-ELF4 cells. The expressions of phosphorylated Akt and total Akt in the cells were detected using Western blotting. RESULTS BON-ELF4 cell line with stable overexpression of ELF4 was successfully established. ELF4 overexpression significantly promoted the proliferation (P < 0.05) and obviously suppressed epirubicin- induced apoptosis in BON cells, resulting also in significantly reduced expressions of cleaved caspase-8, caspase-9 and PARP (P < 0.05). The results of flow cytometry showed a significantly lower apoptotic rate in BON-ELF4 cells than in BON-Vector cells following epirubicin treatment (6.03% vs 22.90%). The phosphorylation levels of Akt (Thr308 and Ser473) were significantly increased (P < 0.05) while the level of total Akt remained unchanged (P>0.05) in ELF4- overexpressing cells. CONCLUSION ELF4 overexpression enhances the proliferation and suppresses apoptosis of insulinomas cells by activating Akt signaling.
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Affiliation(s)
- G Wei
- Department of Endocrinology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - L Wang
- Department of Healthcare, First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - X Wan
- Department of Endocrinology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Y Tan
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
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13
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Ying XD, Wei G, An H. Sodium butyrate relieves lung ischemia-reperfusion injury by inhibiting NF-κB and JAK2/STAT3 signaling pathways. Eur Rev Med Pharmacol Sci 2021; 25:413-422. [PMID: 33506931 DOI: 10.26355/eurrev_202101_24409] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Ischemia-reperfusion (IR) is the main cause of acute lung injury (ALI) in clinical lung transplantation, extracorporeal circulation, lung sleeve resection, trauma and cardiopulmonary resuscitation. The inflammatory response and oxidative stress following IR are factors that cause and aggravate its secondary damage. The purpose of this study was to investigate the efficacy and mechanism of sodium butyrate (NaB) on lung ischemia-reperfusion injury (LIRI). MATERIALS AND METHODS We used male C57BL/6 mice to construct the LIRI model and administered the mice with NaB. By examining the expression of inflammatory factors and oxidative stress-related molecules in mouse lung tissue, we investigated the effects of NaB on inflammation and oxidative stress in lung tissue after IR. In addition, the changes in the activity of the NF-κB and JAK2/STAT3 signaling pathways were also examined to determine the mechanism of NaB. RESULTS The expression levels of the inflammatory factors (IL-1β, IL-6 and TNF-α) in lung tissue of mice after IR were significantly increased, while NaB reduced the expression of inflammatory factors. In addition, the oxidative stress level of mouse lung tissue after IR increased significantly, showing the decrease of antioxidant molecules SOD1/2, catalase (CAT), and Peroxiredoxin 1 (Prdx1), while the intake of NaB increased the antioxidant level of mouse lung tissue. The activities of NF-κB and JAK2/STAT3 signaling pathways were significantly increased in lung tissue after IR, whereas NaB inhibited the activity of NF-κB and JAK2/STAT3 signaling pathways. CONCLUSIONS NaB relieves LIRI by inhibiting NF-κB and JAK2/STAT3 signaling pathways to reduce inflammation and oxidative stress levels in lung tissue of mice after IR.
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Affiliation(s)
- X-D Ying
- Department of Intensive Care Unit, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China.
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14
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Rodermund L, Coker H, Oldenkamp R, Wei G, Bowness J, Rajkumar B, Nesterova T, Susano Pinto DM, Schermelleh L, Brockdorff N. Time-resolved structured illumination microscopy reveals key principles of Xist RNA spreading. Science 2021; 372:372/6547/eabe7500. [PMID: 34112668 DOI: 10.1126/science.abe7500] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 05/07/2021] [Indexed: 01/23/2023]
Abstract
X-inactive specific transcript (Xist) RNA directs the process of X chromosome inactivation in mammals by spreading in cis along the chromosome from which it is transcribed and recruiting chromatin modifiers to silence gene transcription. To elucidate mechanisms of Xist RNA cis-confinement, we established a sequential dual-color labeling, super-resolution imaging approach to trace individual Xist RNA molecules over time, which enabled us to define fundamental parameters of spreading. We demonstrate a feedback mechanism linking Xist RNA synthesis and degradation and an unexpected physical coupling between preceding and newly synthesized Xist RNA molecules. Additionally, we find that the protein SPEN, a key factor for Xist-mediated gene silencing, has a distinct function in Xist RNA localization, stability, and coupling behaviors. Our results provide insights toward understanding the distinct dynamic properties of Xist RNA.
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Affiliation(s)
- Lisa Rodermund
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
| | - Heather Coker
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
| | - Roel Oldenkamp
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
| | - Guifeng Wei
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
| | - Joseph Bowness
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
| | - Bramman Rajkumar
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
| | - Tatyana Nesterova
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
| | | | | | - Neil Brockdorff
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK.
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15
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Wei G, Almeida M, Pintacuda G, Coker H, Bowness JS, Ule J, Brockdorff N. Acute depletion of METTL3 implicates N 6-methyladenosine in alternative intron/exon inclusion in the nascent transcriptome. Genome Res 2021; 31:1395-1408. [PMID: 34131006 PMCID: PMC8327914 DOI: 10.1101/gr.271635.120] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 06/10/2021] [Indexed: 01/15/2023]
Abstract
RNA N 6-methyladenosine (m6A) modification plays important roles in multiple aspects of RNA regulation. m6A is installed cotranscriptionally by the METTL3/14 complex, but its direct roles in RNA processing remain unclear. Here, we investigate the presence of m6A in nascent RNA of mouse embryonic stem cells. We find that around 10% of m6A peaks are located in alternative introns/exons, often close to 5' splice sites. m6A peaks significantly overlap with RBM15 RNA binding sites and the histone modification H3K36me3. Acute depletion of METTL3 disrupts inclusion of alternative introns/exons in the nascent transcriptome, particularly at 5' splice sites that are proximal to m6A peaks. For terminal or variable-length exons, m6A peaks are generally located on or immediately downstream from a 5' splice site that is suppressed in the presence of m6A and upstream of a 5' splice site that is promoted in the presence of m6A. Genes with the most immediate effects on splicing include several components of the m6A pathway, suggesting an autoregulatory function. Collectively, our findings demonstrate crosstalk between the m6A machinery and the regulation of RNA splicing.
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Affiliation(s)
- Guifeng Wei
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Mafalda Almeida
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Greta Pintacuda
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Heather Coker
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Joseph S Bowness
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Jernej Ule
- The Francis Crick Institute, London NW1 1AT, United Kingdom.,Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, Queen Square, London WC1N 3BG, United Kingdom
| | - Neil Brockdorff
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
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Polo Alonso E, Ramírez-Backhaus M, Wei G, Mascarós JM, Aragón Rodriguez F, Gómez-Ferrer Á, Collado A, Calatrava Fons A, Rubio-Briones J. Does active surveillance avoid overtreatment in prostate cancer? Lessons learned from salvage radical prostatectomies. Actas Urol Esp 2021; 45:373-382. [PMID: 34088437 DOI: 10.1016/j.acuroe.2021.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/14/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Determine whether our institution´s active surveillance (AS) protocol is a suitable strategy to minimise prostate cancer overtreatment. MATERIAL AND METHODS Retrospective analysis of 516 patients on AS after prostate cancer diagnosis. Population divided into "per-protocol" vs "induced" AS depending on fulfilment of protocol´s inclusion criteria. Radical prostatectomies after AS were selected and stratified based on: reclassification, progression or patient anxiety. Clinicopathological features and biochemical relapse-free survival were studied. Primary endpoint was overtreatment ratio based on the presence of insignificant prostate cancer and adverse pathological features in the surgical specimen. Kaplan-Meier curves were used to estimate the biochemical relapse-free survival and compared with log-rank test. RESULTS 304 patients fulfilled inclusion criteria; 100 proceeded to radical prostatectomy (31% "induced", 69% "per-protocol" AS). Surgery indications were reclassification, progression and anxiety in 66%, 18% and 16% of patients respectively. Rate of positive lymph nodes was higher in the progression group (11%) compared to reclassification and anxiety (5% and 0% respectively, P = .002). Positive surgical margins were more frequently reported in the progression cohort compared to reclassification (28% vs 20%). Median follow-up from diagnosis until last radical prostatectomy was 48.3 months (32.4-70). 3 year biochemical relapse-free survival in the salvage radical prostatectomy was 85.4% (95 CI 78.3-93.2). Insignificant cancer was noticed in 7% of patients (Epstein´s vs 24% Wolters´ criteria). Rate of patients with adverse pathological features was 36%. CONCLUSIONS The majority of patients who underwent salvage surgery after AS were not overtreated. Radical prostatectomy should be considered a safe rescue treatment.
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Affiliation(s)
- E Polo Alonso
- Departamento de Urología, Fundación Instituto Valenciano de Oncología, Valencia, Spain.
| | - M Ramírez-Backhaus
- Departamento de Urología, Fundación Instituto Valenciano de Oncología, Valencia, Spain
| | - G Wei
- Department of Surgery, Austin Health, The University of Melbourne, Melbourne, Victoria, Australia; Young Urology Researchers Organisation (YURO), Melbourne, Victoria, Australia
| | - J M Mascarós
- Departamento de Urología, Fundación Instituto Valenciano de Oncología, Valencia, Spain
| | - F Aragón Rodriguez
- Departamento de Urología, Fundación Instituto Valenciano de Oncología, Valencia, Spain
| | - Á Gómez-Ferrer
- Departamento de Urología, Fundación Instituto Valenciano de Oncología, Valencia, Spain
| | - A Collado
- Departamento de Urología, Fundación Instituto Valenciano de Oncología, Valencia, Spain
| | - A Calatrava Fons
- Departamento de Patología, Fundacion Instituto Valenciano de Oncologia, Valencia, Spain
| | - J Rubio-Briones
- Departamento de Urología, Fundación Instituto Valenciano de Oncología, Valencia, Spain
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Wei G, Turner K, Hennessy K, Seminario-Vidal L. 273 Reluctance towards digital image sharing and challenges for teledermatology. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Wei G, Glinos G, Seminario-Vidal L. 416 Outcomes in hospitalized patients with cutaneous T-cell lymphomas. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Wei G, Almeida M, Bowness JS, Nesterova TB, Brockdorff N. Xist Repeats B and C, but not Repeat A, mediate de novo recruitment of the Polycomb system in X chromosome inactivation. Dev Cell 2021; 56:1234-1235. [PMID: 33945783 DOI: 10.1016/j.devcel.2021.04.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Guifeng Wei
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Mafalda Almeida
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Joseph S Bowness
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Tatyana B Nesterova
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Neil Brockdorff
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
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Chukwusa E, Wilson R, Gaughran F, Wei G. Multiple hospitalisations towards the end of life among patients with serious mental illness: A retrospective cohort study in England, UK. Eur Psychiatry 2021. [PMCID: PMC9475568 DOI: 10.1192/j.eurpsy.2021.1069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Multiple hospitalisations towards the end of life is an indicator of poor-quality care. Understanding the characteristics of patients who experience hospitalisations at the end-of-life and how they vary is important for improved care planning. Objectives To describe socio-demographic and clinical characteristics of patients diagnosed with serious mental illness who experienced multiple hospitalisations in the last 90 days of life. Methods Data for all adult patients with a diagnosis of serious mental illness who died in 2018-2019 in England, UK were extracted from the National Mental Health Services Data Set linked with Hospital Episode Statistics and death registry data. Variables of interest included age, gender, marital status, underlying and contributory cause of death, ethnicity, place of death, deprivation status, urban-rural indicator, and patient’s region of residence. The number of hospitalisations and patient’s sociodemographic & clinical were described using descriptive statistics and percentages, respectively. Results Of the 45924 patients, 38.1% (n=17505, Male=42.9%, Female=57.1%, Mean age:78.4) had at least one hospitalisation in the last 90 days of life. The median number of hospitalisations was 2(StdDev:1.64, Minimum=1,Maximum=23). Most of those hospitalised (n=11808, 67.5%), died in a health care establishment (e.g. Hospital or hospice). There were marked geographic differences in the proportions of hospitalisations.The North West region of England recorded the most hospitalisations (n= 2906,16.6%), compared to other regions. Conclusions Further analysis is needed to understand factors independently associated with hospitalisations in people with serious mental illness. Funding: This project is supported by the National Institute for Health Research (NIHR) Applied Research Collaborations (ARC) South London.
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Wei G, Kelly BD, Timm B, Perera M, Lundon DJ, Jack G, Bolton DM. Clash of the calculators: External validation of prostate cancer risk calculators in men undergoing mpMRI and transperineal biopsy. BJUI Compass 2021; 2:194-201. [PMID: 35475133 PMCID: PMC8988740 DOI: 10.1002/bco2.58] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/29/2020] [Accepted: 09/30/2020] [Indexed: 12/14/2022] Open
Abstract
Objective To compare the accuracy of the European Randomized Study of Screening for Prostate Cancer (ERSPC) RC, MRI‐ERSPC‐RC, and Prostate Biopsy Collaborative Group (PBCG) RC in patients undergoing transperineal prostate biopsy. Patients and methods We identified 392 patients who underwent mpMRI before transperineal prostate biopsy across multiple public and private institutions between January 2017 and August 2019. The estimated probabilities of detecting PCa and significant PCa were calculated using the MRI‐ERSPC‐RC, ERSPC‐RC, and PBCG‐RC. Receiver operating characteristic (ROC) curves for each calculator were generated and the area underneath the curve (AUC) was compared. Calibration and clinical utility were assessed with calibration plots and decision curve analysis, respectively. Results PCa was detected in 285 patients (72.7%) with significant PCa found in 200 patients (51.1%). ROC curve analysis found the MRI‐ERSPC‐RC outperformed the ERSPC‐RC and PBCG‐RC. For the prediction of PCa, the AUC was 0.756, 0.696, and 0.675 for the MRI‐ERSPC‐RC, ERSPC‐RC, and PBCG‐RC, respectively. The AUC for the prediction of significant PCa was 0.803, 0.745, and 0.746 for the MRI‐ERSPC‐RC, ERSPC‐RC, and PBCG‐RC, respectively. Conclusions Our study validated the ERSPC‐RC, MRI‐ERSPC‐RC, and PBCG‐RC in a cohort undergoing transperineal prostate biopsy with the MRI‐ERSPC‐RC performing the best. These RCs may enable improved shared decision making and help to guide patient selection for biopsy.
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Affiliation(s)
- G. Wei
- Department of Surgery Austin HealthThe University of Melbourne Melbourne VIC Australia
| | - B. D. Kelly
- Department of Surgery Austin HealthThe University of Melbourne Melbourne VIC Australia
| | - B. Timm
- Department of Surgery Austin HealthThe University of Melbourne Melbourne VIC Australia
- North Eastern Urology Melbourne VIC Australia
| | - M. Perera
- Department of Surgery Austin HealthThe University of Melbourne Melbourne VIC Australia
- Olivia Newton‐John Cancer and Wellness CentreAustin Health Heidelberg VIC Australia
- Faculty of Medicine University of Queensland Brisbane QLD Australia
| | - D. J. Lundon
- Department of Urology Icahn School of MedicineMount Sinai Hospitals New York NY USA
| | - G. Jack
- Department of Surgery Austin HealthThe University of Melbourne Melbourne VIC Australia
- North Eastern Urology Melbourne VIC Australia
| | - D. M. Bolton
- Department of Surgery Austin HealthThe University of Melbourne Melbourne VIC Australia
- Olivia Newton‐John Cancer and Wellness CentreAustin Health Heidelberg VIC Australia
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22
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Wei G, Farooq J. 011 Sexual Identity Differences in Colon Cancer Screening Practices Among US Adults. J Sex Med 2021. [DOI: 10.1016/j.jsxm.2021.01.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhang Z, Wang Z, Jin L, Tan X, Wang Z, Shen L, Wei G, He D. [Effect of piRNA NU13 in regulating biological behaviors of human Wilms tumor cells in vitro]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:184-192. [PMID: 33624590 DOI: 10.12122/j.issn.1673-4254.2021.02.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the role of the differential piRNA NU13 derived from piwil2-induced cancer stem-like cells (piwil2-iCSCs) in regulating biological behaviors of Wilms tumor cells (G401). OBJECTIVE The expressions of piRNA NU13 and NOP56 were detected in Wilms tumor cell line G401 using RT-qPCR. G401 cells were transfected with piRNA NU13 mimics and inhibitor for its over-expression and inhibition, and the transfection efficiency was verified with RT-qPCR. The changes in proliferation of G401 cells after transfection were detected using CCK8 assay, and cell apoptosis was analyzed using flow cytometry. Wound healing assay and Transwell assay were performed to examine the changes in migration and invasion abilities of the transfected cells. The binding of NOP56 and piRNA NU13 was detected using dual luciferase experiment. The protein expressions of MMP2, MMP9, BAX, Bcl2, and NOP56 in the cells were detected with Western blotting. OBJECTIVE RTqPCR showed that the expression of piRNA NU13 decreased significantly in human Wilms tumor G401 cells as compared with that in renal tubular epithelial cell line HK2 (P < 0.05), and NOP56 was highly expressed in G401 cells and Wilms tumor tissues (P < 0.05). Over-expression of piRNA NU13 significantly suppressed the proliferation, migration and invasion of G401 cells, promoted cell apoptosis (P < 0.05), inhibited the expression of MMP2, MMP9 and Bcl2, and enhanced the expression of BAX (P < 0.05). The results of dual luciferase experiment showed that piRNA NU13 did not bind to NOP56 directly but regulated the expression of NOP56 in an indirect manner. OBJECTIVE piRNA NU13 is down-regulated and NOP56 is highly expressed in Wilms tumor. piNU13 may regulate the expression of NOP56 indirectly to inhibit the proliferation, migration and invasion and promote apoptosis of Wilms tumor cells in vitro.
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Affiliation(s)
- Z Zhang
- Department of Pediatric Urologic Surgery, Children's Hospital of Chongqing Medical University; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Z Wang
- Department of Pediatric Urologic Surgery, Children's Hospital of Chongqing Medical University; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - L Jin
- Department of Pediatric Urologic Surgery, Children's Hospital of Chongqing Medical University; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - X Tan
- Department of Pediatric Urologic Surgery, Children's Hospital of Chongqing Medical University; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Z Wang
- Department of Pediatric Urologic Surgery, Children's Hospital of Chongqing Medical University; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - L Shen
- Department of Pediatric Urologic Surgery, Children's Hospital of Chongqing Medical University; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - G Wei
- Department of Pediatric Urologic Surgery, Children's Hospital of Chongqing Medical University; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - D He
- Department of Pediatric Urologic Surgery, Children's Hospital of Chongqing Medical University; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
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Polo Alonso E, Ramírez-Backhaus M, Wei G, Mascarós J, Aragón Rodríguez F, Gómez-Ferrer A, Collado A, Calatrava Fons A, Rubio-Briones J. Does active surveillance avoid overtreatment in prostate cancer? Lessons learned from salvage radical prostatectomies. Actas Urol Esp 2021. [PMID: 33637376 DOI: 10.1016/j.acuro.2020.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Determine whether our institution's active surveillance (AS) protocol is a suitable strategy to minimise prostate cancer overtreatment. MATERIAL AND METHODS Retrospective analysis of 516 patients on AS after prostate cancer diagnosis. Population divided into «per-protocol» vs «induced» AS depending on fulfilment of protocol's inclusion criteria. Radical prostatectomies after AS were selected and stratified based on reclassification, progression or patient anxiety. Clinicopathological features and biochemical relapse-free survival were studied. Primary endpoint was overtreatment ratio based on the presence of insignificant prostate cancer and adverse pathological features in the surgical specimen. Kaplan-Meier curves were used to estimate the biochemical relapse-free survival and compared with log-rank test. RESULTS 304 patients fulfilled inclusion criteria; 100 proceeded to radical prostatectomy (31% «induced», 69% «per-protocol» AS). Surgery indications were reclassification, progression and anxiety in 66%, 18% and 16% of patients, respectively. Rate of positive lymph nodes was higher in the progression group (11%) compared to reclassification and anxiety (5% and 0%, respectively; P=.002). Positive surgical margins were more frequently reported in the progression cohort compared to reclassification (28% vs 20%). Median follow-up from diagnosis until last radical prostatectomy was 48.3months (32.4-70). Three year biochemical relapse-free survival in the salvage radical prostatectomy was 85.4% (95%CI: 78.3-93.2). Insignificant cancer was noticed in 7% of patients (Epstein's vs 24% Wolters' criteria). Rate of patients with adverse pathological features was 36%. CONCLUSIONS The majority of patients who underwent salvage surgery after AS were not overtreated. Radical prostatectomy should be considered a safe rescue treatment.
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25
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Avogadri F, Wei G, Dambkowski C, Li G, Soifer H. P-154 Actionable targets by tumor genomic profiling in patients with cholangiocarcinoma. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Abstract
The X inactive-specific transcript (Xist) gene is the master regulator of X chromosome inactivation in mammals. Xist produces a long noncoding (lnc)RNA that accumulates over the entire length of the chromosome from which it is transcribed, recruiting factors to modify underlying chromatin and silence X-linked genes in cis Recent years have seen significant progress in identifying important functional elements in Xist RNA, their associated RNA-binding proteins (RBPs), and the downstream pathways for chromatin modification and gene silencing. In this review, we summarize progress in understanding both how these pathways function in Xist-mediated silencing and the complex interplay between them.
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Affiliation(s)
- Neil Brockdorff
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Joseph S Bowness
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Guifeng Wei
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
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27
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Abstract
Background: X chromosome inactivation in mammals is regulated by the non-coding (nc) RNA, Xist, which represses the chromosome from which it is transcribed. High levels of the N6-methyladenosine (m6A) RNA modification occur within Xist exon I, close to the 5' end of the transcript, and also further 3', in Xist exon VII. The m6A modification is catalysed by the METTL3/14 complex that is directed to specific targets, including Xist, by the RNA binding protein RBM15/15B. m6A modification of Xist RNA has been reported to be important for Xist-mediated gene silencing. Methods: We use CRISPR/Cas9 mediated mutagenesis to delete sequences around the 5' m6A region in interspecific XX mouse embryonic stem cells (mESCs). Following induction of Xist RNA expression, we assay chromosome silencing using allelic RNA-seq and Xist m6A distribution using m6A-seq. Additionally, we use Xist RNA FISH to analyse the effect of deleting the 5' m6A region on the function of the endogenous Xist promoter. We purify epitope tagged RBM15 from mESCs, and then apply MS/MS analysis to define the RBM15 interactome. Results: We show that a deletion encompassing the entire Xist 5' m6A region results in a modest reduction in Xist-mediated silencing, and that the 5' m6A region overlaps essential DNA elements required for activation of the endogenous Xist promoter. Deletion of the Xist A-repeat, to which RBM15 binds, entirely abolishes deposition of m6A in the Xist 5' m6A region without affecting the modification in exon VII. We show that in mESCs, RBM15 interacts with the m6A complex, the SETD1B histone modifying complex, and several proteins linked to RNA metabolism. Conclusions: Our findings support that RBM15 binding to the Xist A-repeat recruits the m6A complex to the 5' Xist m6A region and that this region plays a role in Xist-mediated chromosome silencing.
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Affiliation(s)
- Heather Coker
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Guifeng Wei
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Benoit Moindrot
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, 91198, France
| | - Shabaz Mohammed
- Proteomics Technology Development and Application, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Tatyana Nesterova
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Neil Brockdorff
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
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Wang D, Wang D, Pu L, Wei G. Improved Antioxidant Capacity and Immune Function of Broiler Chickens Fed with Selenium-enriched Candida utilis. Braz J Poult Sci 2020. [DOI: 10.1590/1806-9061-2019-1047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- D Wang
- Soochow University, China
| | - D Wang
- Soochow University, China
| | - L Pu
- Soochow University, China
| | - G Wei
- Soochow University, China
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Wang D, Zhu C, Zhang G, Wang C, Wei G. Enhanced β-glucan and pullulan production by Aureobasidium pullulans with zinc sulfate supplementation. Appl Microbiol Biotechnol 2019; 104:1751-1760. [PMID: 31867695 DOI: 10.1007/s00253-019-10326-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 11/05/2019] [Revised: 12/10/2019] [Accepted: 12/15/2019] [Indexed: 01/20/2023]
Abstract
The effects of mineral salts on the production of exopolysaccharides, including β-glucan and pullulan, by Aureobasidium pullulans CCTCC M 2012259 were investigated. Zinc sulfate at certain concentrations decreased dry biomass but favored to the biosynthesis of both exopolysaccharides. When 100 mg/L zinc sulfate was added to the fermentation medium, production of β-glucan and pullulan increased by 141.7 and 10.2%, respectively, when compared with that noted in the control without zinc sulfate addition. To reveal the physiological mechanism underlying improved β-glucan and pullulan production, key enzymes activities, energy metabolism substances, intracellular uridine diphosphate glucose (UDPG) levels, and gene expression were determined. The results indicated that zinc sulfate up-regulated the transcriptional levels of pgm1, ugp, fks, and kre6 genes, increased activities of key enzymes involved in the biosynthesis of UDPG, β-glucan and pullulan, enhanced intracellular UDPG content, and improved energy supply, all of which contributed to the increment in β-glucan and pullulan production. The present study not only provides a feasible approach to improve the production of exopolysaccharides but also contributes to better understanding of the physiological characteristics of A. pullulans.
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Affiliation(s)
- D Wang
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - C Zhu
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - G Zhang
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - C Wang
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - G Wei
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China.
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Liao N, Chen B, Zhang G, Ren C, Wang Y, Guo L, Cao L, Wen L, Li K, Jia M, Li C, Mok H, Chen X, Wei G, Lin J, Zhang Z, Hou T, Shi X, HanZhang H, Liu H. Frequency of germline mutations in women’s cancer susceptibility genes in a large cohort of Chinese breast cancer patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz240.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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31
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Moser J, Wei G, Colonna S, Grossmann K, Patel S, Hyngstrom J. Comparative-effectiveness of pembrolizumab vs nivolumab for patients with metastatic melanoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz255.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nesterova TB, Wei G, Coker H, Pintacuda G, Bowness JS, Zhang T, Almeida M, Bloechl B, Moindrot B, Carter EJ, Alvarez Rodrigo I, Pan Q, Bi Y, Song CX, Brockdorff N. Systematic allelic analysis defines the interplay of key pathways in X chromosome inactivation. Nat Commun 2019; 10:3129. [PMID: 31311937 PMCID: PMC6635394 DOI: 10.1038/s41467-019-11171-3] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 06/19/2019] [Indexed: 01/05/2023] Open
Abstract
Xist RNA, the master regulator of X chromosome inactivation, acts in cis to induce chromosome-wide silencing. Whilst recent studies have defined candidate silencing factors, their relative contribution to repressing different genes, and their relationship with one another is poorly understood. Here we describe a systematic analysis of Xist-mediated allelic silencing in mouse embryonic stem cell-based models. Using a machine learning approach we identify distance to the Xist locus and prior gene expression levels as key determinants of silencing efficiency. We go on to show that Spen, recruited through the Xist A-repeat, plays a central role, being critical for silencing of all except a subset of weakly expressed genes. Polycomb, recruited through the Xist B/C-repeat, also plays a key role, favouring silencing of genes with pre-existing H3K27me3 chromatin. LBR and the Rbm15/m6A-methyltransferase complex make only minor contributions to gene silencing. Together our results provide a comprehensive model for Xist-mediated chromosome silencing.
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Affiliation(s)
- Tatyana B Nesterova
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Guifeng Wei
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Heather Coker
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Greta Pintacuda
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
- Department of Stem Cell and Regenerative Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA, 02138, USA
| | - Joseph S Bowness
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Tianyi Zhang
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Mafalda Almeida
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Bianca Bloechl
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Benoit Moindrot
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
- I2BC Paris-Sud University, Gif-Sur-Yvette, France
| | - Emma J Carter
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Ines Alvarez Rodrigo
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
- Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RE, UK
| | - Qi Pan
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Ying Bi
- Ludwig Institute for Cancer Research, Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - Chun-Xiao Song
- Ludwig Institute for Cancer Research, Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - Neil Brockdorff
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK.
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Wang S, Zhang Y, Huang J, Wong CC, Zhai J, Li C, Wei G, Zhao L, Wang G, Wei H, Zhao Z, Yu J. TRIM67 Activates p53 to Suppress Colorectal Cancer Initiation and Progression. Cancer Res 2019; 79:4086-4098. [PMID: 31239268 DOI: 10.1158/0008-5472.can-18-3614] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 05/03/2019] [Accepted: 06/21/2019] [Indexed: 11/16/2022]
Abstract
Tripartite motif (TRIM) family proteins participate in a variety of important cellular processes, including apoptosis, cell-cycle arrest, DNA repair, and senescence. In this study, we demonstrated that a novel TRIM family member, TRIM67, was commonly silenced in colorectal cancer and its downregulation was associated with poor survival. Trim67 knockout in ApcMin/+ mice increased the incidence, multiplicity, and burden of colorectal tumors. Similarly, colon-specific knockout of Trim67 significantly accelerated azoxymethane-induced colorectal cancer in mice. RNA sequencing revealed that the antitumor effect of TRIM67 was mediated by activation of the p53 signaling pathway. TRIM67 interacted directly with the C-terminus of p53, inhibiting p53 degradation by its ubiquitin ligase MDM2. TRIM67 was also a transcriptional target of p53; upon cellular stress, p53 bound to the TRIM67 promoter and induced significant upregulation of TRIM67, thereby forming a TRIM67/p53 self-amplifying loop that boosts p53-induced cell growth inhibition and apoptosis. Consequently, loss of this p53-positive regulatory program profoundly compromised p53-mediated responses to chemotherapy-induced DNA damage. Dampened p53 response was also observed in tumors of Trim67 knockout mice and Trim67 knockout embryonic fibroblasts. TRIM67 reactivation restored p53 activation and sensitized colorectal cancer cells to chemotherapy in vitro and in vivo. TRIM67 thus functions as a pivotal tumor suppressor in colorectal cancer and is a potential target for improving chemotherapy responsiveness. SIGNIFICANCE: The TRIM67/p53 axis represents a novel therapeutic target that could be harnessed to improve chemotherapy efficacy in colorectal cancer expressing wild-type p53 but with repressed p53 signaling.
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Affiliation(s)
- Shiyan Wang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong
| | - Yanquan Zhang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong
| | - Junzhe Huang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong
| | - Chi Chun Wong
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong
| | - Jianning Zhai
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong
| | - Chuangen Li
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong
| | - Guifeng Wei
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Liuyang Zhao
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong
| | - Guoping Wang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong
| | - Hong Wei
- Precision Medicine Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zengren Zhao
- Department of General Surgery, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jun Yu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong.
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Han M, Wei G, McManus CE, Hillier LW, Reinke V. Isolated C. elegans germ nuclei exhibit distinct genomic profiles of histone modification and gene expression. BMC Genomics 2019; 20:500. [PMID: 31208332 PMCID: PMC6580472 DOI: 10.1186/s12864-019-5893-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 06/10/2019] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND The wide variety of specialized permissive and repressive mechanisms by which germ cells regulate developmental gene expression are not well understood genome-wide. Isolation of germ cells with high integrity and purity from living animals is necessary to address these open questions, but no straightforward methods are currently available. RESULTS Here we present an experimental paradigm that permits the isolation of nuclei from C. elegans germ cells at quantities sufficient for genomic analyses. We demonstrate that these nuclei represent a very pure population and are suitable for both transcriptome analysis (RNA-seq) and chromatin immunoprecipitation (ChIP-seq) of histone modifications. From these data, we find unexpected germline- and soma-specific patterns of gene regulation. CONCLUSIONS This new capacity removes a major barrier in the field to dissect gene expression mechanisms in the germ line of C. elegans. Consequent discoveries using this technology will be relevant to conserved regulatory mechanisms across species.
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Affiliation(s)
- Mei Han
- Department of Genetics, Yale University, New Haven, CT 06520 USA
| | - Guifeng Wei
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford, OX1 3QU UK
| | | | - LaDeana W. Hillier
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington, 98195 USA
| | - Valerie Reinke
- Department of Genetics, Yale University, New Haven, CT 06520 USA
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Mittal K, Kaur J, Wei G, Toss MS, Osan RM, Janssen EA, Søiland H, Rakha EA, Rida PC, Aneja R. Abstract P5-18-02: A quantitative centrosomal amplification score (CAS) predicts local recurrence in ductal carcinoma in situ. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p5-18-02] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: About 60-80% of ductal carcinoma in situ (DCIS) cases are high-grade (HG) DCIS with an elevated risk of local recurrence (LR) even after a lumpectomy. Patients are often under or over treated due to the lack of accurate recurrence risk prediction models. Current prognostic models such as OncotypeDX and Van Nuys Prognostic Index (VNPI) lack consistency and are limited to a specific subset of patients. Here in this study, we show that the extent of centrosome amplification (CA) in a DCIS lesion can predict the risk of LR after lumpectomy. CA refers to presence of supernumerary or large centrosomes and is a characteristic of pre-invasive lesions, and breast tumors, and promotes erroneous mitoses and chromosomal instability.
Methods: We have pioneered a semi-automated pipeline that integrates immunofluorescence confocal microscopy with digital image analysis and yields a quantitative Centrosomal Amplification Score (CAS) for each patients' tumor sample by evaluating severity and frequency of centrosomal aberrations therein. To this end, we first immunofluorescently stained centrosomes in formalin fixed paraffin embedded resection samples from DCIS patients (discovery cohort n=133 and a validation cohort n=119) using an antibody against γ-tubulin, and co-stained nuclei with DAPI. Next, we imaged the slides and processed the raw 3D image data using IMARIS Biplane 8.2 3D volume rendering software. Finally, we calculated centrosome numbers and volume in ˜250 cells from each patient sample. Using a mathematical algorithm, we generated a composite CAS score for each patient sample by integrating the numerical (CASi) and structural (CASm) aberrations.
Results: We found that DCIS patients with recurrence exhibited higher CAS. Intriguingly, higher CAS was also associated with greater risk of developing ipsilateral breast events [Hazard ratio (HR) =7.58 for discovery cohort and HR=5.8 for validation cohort, p<0.0001] which remained significant (HR=8.5 for discovery and HR=3.39, p<0.0001) after accounting for the confounding factors like age, tumor size, comedo necrosis and radiotherapy. Kaplan Meir survival analysis indicated that high CAS was associated with poor recurrence-free survival (RFS) (p<0.001). For the high and low CAS groups, the 5-year risk of recurrence was 87.5% and 12.5% respectively (p<0.001). In our discovery cohort, a head-to-head comparison of the ability of VNPI and CAS to predict recurrence illuminated that CAS was able to stratify the DCIS group in recurrence and recurrence-free group with much higher significance (p<0.0001) than the Van Nuys Prognostic Index (VNPI) (HRs for CAS- 8.8 vs. VNPI 0.959). Finally, the Harrell's concordance index using SAS PROC PHREG tests yielded that the probability of a patient with poorer/lower RFS to be in the high CAS group is 76.2%.
Conclusion: Our data compellingly show that CAS quantifies the risk of recurrence in DCIS patients with the highest concordance and provides a novel and innovative tool to tailor their treatment based on their risk profile.
Citation Format: Mittal K, Kaur J, Wei G, Toss MS, Osan RM, Janssen EA, Søiland H, Rakha EA, Rida PC, Aneja R. A quantitative centrosomal amplification score (CAS) predicts local recurrence in ductal carcinoma in situ [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-18-02.
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Affiliation(s)
- K Mittal
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
| | - J Kaur
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
| | - G Wei
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
| | - MS Toss
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
| | - RM Osan
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
| | - EA Janssen
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
| | - H Søiland
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
| | - EA Rakha
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
| | - PC Rida
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
| | - R Aneja
- Georgia State University, Atlanta, GA; University of Nottingham and Nottingham University Hospitals, Nottingham, United Kingdom; University of Stavanger and Stavanger University Hospitals, Stavanger, Norway; Novazoi Theranostics, Inc, Rolling Hills Estates, CA
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Coker H, Wei G, Brockdorff N. m6A modification of non-coding RNA and the control of mammalian gene expression. Biochim Biophys Acta Gene Regul Mech 2018; 1862:310-318. [PMID: 30550772 DOI: 10.1016/j.bbagrm.2018.12.002] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 11/27/2018] [Accepted: 12/07/2018] [Indexed: 12/27/2022]
Abstract
The biology of non-coding RNA (ncRNA) and the regulation of mammalian gene expression is a rapidly expanding field. In this review, we consider how recent advances in technology, enabling the precise mapping of modifications to RNA transcripts, has provided new opportunities to dissect post-transcriptional gene regulation. With this has come the realisation that in the absence of translation, the modification of ncRNAs may play a fundamental role in their regulation, protein interactome and subsequent downstream effector functions. We focus upon modification of RNA by N6-methyladenosine (m6A); its readers, writers and erasers, before considering the differing role of m6A modified lncRNAs MALAT1 and Xist. This article is part of a Special Issue entitled: mRNA modifications in gene expression control edited by Dr. Soller Matthias and Dr. Fray Rupert.
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Affiliation(s)
- Heather Coker
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
| | - Guifeng Wei
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Neil Brockdorff
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
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Wang Y, Wei Y, Tang X, Liu B, Shen L, Long C, Lin T, He D, Wu S, Wei G. Association between androgen receptor polymorphic CAG and GGC repeat lengths and cryptorchidism: A meta-analysis of case-control studies. J Pediatr Urol 2018; 14:432.e1-432.e9. [PMID: 29914823 DOI: 10.1016/j.jpurol.2018.05.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 05/21/2018] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Previous studies have revealed the relationship between androgen receptor (AR) CAG and/or GGC polymorphisms and risk of cryptorchidism, yet the results have been elusive and controversial. AIM To determine whether AR polymorphic CAG and/or GGC repeats are related to cryptorchidism. STUDY DESIGN The relevant studies were obtained from PubMed, Embase, China National Knowledge Infrastructure, and Wanfang. The pooled odds ratios with 95% confidence intervals (CIs) were used to assess the strength of associations. Subgroup analyses were performed based on ethnicity and source of controls. Moreover, Begg's funnel plots and Egger's linear regression test were conducted to determine publication bias. RESULTS Eight case-control studies containing 321 patients and 784 normal controls were included. There was a significant association between longer CAG repeats and cryptorchidism risk (weighted mean difference (WMD) = 0.62; 95% CIs 0.06, 1.18; P = 0.031). Moreover, there was a significant association between the longer GGC repeats and cryptorchidism risk (WMD = 0.87; 95% CIs 0.04, 1.74; P = 0.040). There was significant association between the longer CAG repeats and bilateral cryptorchidism (WMD = 0.88; 95% CIs -0.18, 1.94; P = 0.011), while there was no significant association between the longer CAG repeats and unilateral cryptorchidism (WMD = -0.09; 95% CIs -0.50, 0.31; P = 0.554). There were significant associations between the longer GGC repeats and unilateral cryptorchidism (WMD = 0.88; 95% CIs -0.30, 2.05; P = 0.005) and bilateral cryptorchidism (WMD = 1.35; 95% CIs -0.52, 3.21; P = 0.000). Stratifying analysis revealed an association between longer CAG/GGC repeats and cryptorchidism in Caucasian populations from Europe (WMD = 0.73; 95% CIs 0.00, 1.46; P = 0.017), while there was no association with Asian populations. DISCUSSION This meta-analysis found that CAG/GGC repeats in the AR gene were longer in cryptorchidism patients compared to controls. Both the longer CAG repeats and GGC repeats in the AR gene were associated with cryptorchidism risk. The longer CAG repeats were associated with bilateral cryptorchidism, whereas the longer GGC repeats were associated with unilateral and bilateral cryptorchidism. Stratifying analysis revealed an association between longer CAG/GGC repeats and cryptorchidism in Caucasian populations from Europe, while there was no association between longer CAG/GGC repeats and cryptorchidism in Asian populations. CONCLUSION The CAG/GGC repeats in the AR gene were longer in cryptorchidism than in controls. Longer CAG repeats may play a role in determining bilateral cryptorchidism, and longer GGC repeats may play a role in determining unilateral and bilateral cryptorchidism. These observations were more applicable to Caucasian populations.
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Affiliation(s)
- Y Wang
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Children's Urogenital Development and Tissue Engineering, China
| | - Y Wei
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Children's Urogenital Development and Tissue Engineering, China
| | - X Tang
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Children's Urogenital Development and Tissue Engineering, China
| | - B Liu
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; Ministry of Education Key Laboratory of Child Development and Disorders, China
| | - L Shen
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, China
| | - C Long
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Pediatrics Chongqing, China
| | - T Lin
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; Ministry of Education Key Laboratory of Child Development and Disorders, China
| | - D He
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; Ministry of Education Key Laboratory of Child Development and Disorders, China
| | - S Wu
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Children's Urogenital Development and Tissue Engineering, China; Ministry of Education Key Laboratory of Child Development and Disorders, China.
| | - G Wei
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Children's Urogenital Development and Tissue Engineering, China; Ministry of Education Key Laboratory of Child Development and Disorders, China
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Wang X, Zhang Y, Wei G, Li Z, Tian D, Huang W. Mechanism of Nucleoside Triphosphate Diphosphohydrolase-1-Associated Imbalance in Adenosine Diphosphate Degradation, B-Cell Activation, and Related Injury During Acute Antibody-Mediated Rejection. Transplant Proc 2018; 50:1292-1297. [PMID: 29880349 DOI: 10.1016/j.transproceed.2018.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/01/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The objective of this study was to investigate the effect of nucleoside triphosphate diphosphohydrolase-1 (NTPDase1) during acute antibody-mediated rejection (AMR). METHODS NTPDase1 overexpression, NTPDase1 knockout, and wild-type nude mice skin graft models were used to induce acute AMR. NTPDase1 expression in B cells, NTPDase1 messenger RNA expression in skin grafts, extracellular adenosine diphosphate (ADP) concentration, B-cell volume and surface antigens expression, average platelet transport rate, and ultrastructure and apoptosis of skin graft cells were investigated. RESULTS During acute AMR in nude mice, higher NTPDase1 expression caused lower extracellular ADP concentration, smaller increase in B-cell volume, and major histocompatibility complex II surface antigen expression, suggesting a negative correlation between them; higher NTPDase1 expression also caused slower average platelet transport rate and less severe skin graft injury, suggesting a negative correlation between them. Pretreatment with high-dose exogenous NTPDase1 inhibited platelet activation and protected skin grafts, but it resulted in prolonged bleeding time (by 51.4%) and prolonged coagulation time (by 44.1%). CONCLUSION An NTPDase1-associated imbalance in extracellular ADP degradation may contribute to B-cell activation, platelet activation, and more severe skin graft injury in nude mice. Pretreatment with high-dose exogenous NTPDase1 effectively protected skin grafts in nude mice at 1 week, but it increased the risk of bleeding.
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Affiliation(s)
- X Wang
- Department of Urology, Beijing Tian Tan Hospital, Capital Medical University, Neurology Research Division, China National Clinical Research Center for Neurological Disease, Beijing, China
| | - Y Zhang
- Department of Urology, Beijing Tian Tan Hospital, Capital Medical University, Neurology Research Division, China National Clinical Research Center for Neurological Disease, Beijing, China.
| | - G Wei
- Department of Urology, Beijing Tian Tan Hospital, Capital Medical University, Neurology Research Division, China National Clinical Research Center for Neurological Disease, Beijing, China
| | - Z Li
- Department of Urology, Beijing Tian Tan Hospital, Capital Medical University, Neurology Research Division, China National Clinical Research Center for Neurological Disease, Beijing, China
| | - D Tian
- Department of Urology, Beijing Tian Tan Hospital, Capital Medical University, Neurology Research Division, China National Clinical Research Center for Neurological Disease, Beijing, China
| | - W Huang
- Department of Urology, Beijing Tian Tan Hospital, Capital Medical University, Neurology Research Division, China National Clinical Research Center for Neurological Disease, Beijing, China
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Zhang T, Wei G, Millard CJ, Fischer R, Konietzny R, Kessler BM, Schwabe JWR, Brockdorff N. A variant NuRD complex containing PWWP2A/B excludes MBD2/3 to regulate transcription at active genes. Nat Commun 2018; 9:3798. [PMID: 30228260 PMCID: PMC6143588 DOI: 10.1038/s41467-018-06235-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 08/03/2018] [Indexed: 02/07/2023] Open
Abstract
Transcriptional regulation by chromatin is a highly dynamic process directed through the recruitment and coordinated action of epigenetic modifiers and readers of these modifications. Using an unbiased proteomic approach to find interactors of H3K36me3, a modification enriched on active chromatin, here we identify PWWP2A and HDAC2 among the top interactors. PWWP2A and its paralog PWWP2B form a stable complex with NuRD subunits MTA1/2/3:HDAC1/2:RBBP4/7, but not with MBD2/3, p66α/β, and CHD3/4. PWWP2A competes with MBD3 for binding to MTA1, thus defining a new variant NuRD complex that is mutually exclusive with the MBD2/3 containing NuRD. In mESCs, PWWP2A/B is most enriched at highly transcribed genes. Loss of PWWP2A/B leads to increases in histone acetylation predominantly at highly expressed genes, accompanied by decreases in Pol II elongation. Collectively, these findings suggest a role for PWWP2A/B in regulating transcription through the fine-tuning of histone acetylation dynamics at actively transcribed genes. Transcription regulation requires recruitment of different epigenetic regulators to the chromatin. Here the authors provide evidence that an H3K36me3 reader PWWP2A forms a variant NuRD complex and plays a role in regulating transcription and histone acetylation dynamics.
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Affiliation(s)
- Tianyi Zhang
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, United Kingdom
| | - Guifeng Wei
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, United Kingdom
| | - Christopher J Millard
- Leicester Institute for Structural and Chemical Biology and Department of Molecular and Cell Biology, University of Leicester, Leicester, LE1 7RH, United Kingdom
| | - Roman Fischer
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom
| | - Rebecca Konietzny
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom.,Agilent Technologies, Hewlett-Packard-Str. 8, 76337, Waldbronn, Germany
| | - Benedikt M Kessler
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom
| | - John W R Schwabe
- Leicester Institute for Structural and Chemical Biology and Department of Molecular and Cell Biology, University of Leicester, Leicester, LE1 7RH, United Kingdom
| | - Neil Brockdorff
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, United Kingdom.
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Affiliation(s)
- G. Wei
- School of Business, Sichuan Normal University, Chengdu, P.R. China
- School of Management and Economics, University of Electronic Science and Technology of China, Chengdu, P. R. China
| | - Y. Wei
- School of Finance, Yunnan University of Finance and Economics, Kunming, China
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Fu J, Lai F, Chen Y, Wan X, Wei G, Li Y, Xiao H, Cao X. A novel splice site mutation of the PRKAR1A gene, C.440+5 G>C, in a Chinese family with Carney complex. J Endocrinol Invest 2018; 41:909-917. [PMID: 29318463 DOI: 10.1007/s40618-017-0817-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 12/24/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Carney complex (CNC) is an extremely rare, multiple endocrine neoplasia syndrome that occurs in an autosomal dominant manner. Mutations in PRKAR1A have been reported to be a common genetic cause of CNC. METHODS In this study, we reported a Chinese pedigree of CNC that manifests mainly as spotty skin pigmentation and primary pigmented nodular adrenocortical disease. Whole blood samples of this pedigree were collected for DNA/RNA analysis. Polymerase chain reaction (PCR) and reverse-transcription polymerase chain reaction analyses were performed to amplify the 11 exons and adjacent introns of PRKAR1A. Direct sequencing was used to detect the mutation, and DNA from 70 Han Chinese people was extracted and sequenced as a control to estimate the frequency of the identified mutation. RESULTS Within the pedigree, ten patients with CNC were identified, and a novel heterozygous mutation (c.440+5 G>C in intron 4a) was identified in the PRKAR1A gene. PCR amplification of cDNA from the control subjects and patients was performed. Agarose gel electrophoresis showed only one wild-type band in the cDNA corresponding to the former group, whereas an extra band was present in samples from the latter group corresponding to the skipping of exon 4a; this confirms that the variant affects PRKAR1A splicing. CONCLUSION In conclusion, the c.440+5 G>C mutation is a new splice site mutation that has not been reported and has the potential to broaden the mutational spectrum of PRKAR1A that is associated with CNC, which would facilitate genetic diagnosis and counseling for CNC.
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Affiliation(s)
- J Fu
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - F Lai
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - Y Chen
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - X Wan
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - G Wei
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - Y Li
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - H Xiao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - X Cao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China.
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Wang X, Zhao L, Zhang L, Wu Y, Chou M, Wei G. Comparative symbiotic plasmid analysis indicates that symbiosis gene ancestor type affects plasmid genetic evolution. Lett Appl Microbiol 2018; 67:22-31. [PMID: 29696668 DOI: 10.1111/lam.12998] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 04/19/2018] [Accepted: 04/19/2018] [Indexed: 11/27/2022]
Abstract
Rhizobial symbiotic plasmids play vital roles in mutualistic symbiosis with legume plants by executing the functions of nodulation and nitrogen fixation. To explore the gene composition and genetic constitution of rhizobial symbiotic plasmids, comparison analyses of 24 rhizobial symbiotic plasmids derived from four rhizobial genera was carried out. Results illustrated that rhizobial symbiotic plasmids had higher proportion of functional genes participating in amino acid transport and metabolism, replication; recombination and repair; carbohydrate transport and metabolism; energy production and conversion and transcription. Mesorhizobium amorphae CCNWGS0123 symbiotic plasmid - pM0123d had similar gene composition with pR899b and pSNGR234a. All symbiotic plasmids shared 13 orthologous genes, including five nod and eight nif/fix genes which participate in the rhizobia-legume symbiosis process. These plasmids contained nod genes from four ancestors and fix genes from six ancestors. The ancestral type of pM0123d nod genes was similar with that of Rhizobium etli plasmids, while the ancestral type of pM0123d fix genes was same as that of pM7653Rb. The phylogenetic trees constructed based on nodCIJ and fixABC displayed different topological structures mainly due to nodCIJ and fixABC ancestral type discordance. The study presents valuable insights into mosaic structures and the evolution of rhizobial symbiotic plasmids. SIGNIFICANCE AND IMPACT OF THE STUDY This study compared 24 rhizobial symbiotic plasmids that included four genera and 11 species, illuminating the functional gene composition and symbiosis gene ancestor types of symbiotic plasmids from higher taxonomy. It provides valuable insights into mosaic structures and the evolution of symbiotic plasmids.
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Affiliation(s)
- X Wang
- State Key Laboratory of Crop Stress of Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, China
| | - L Zhao
- State Key Laboratory of Crop Stress of Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, China
| | - L Zhang
- State Key Laboratory of Crop Stress of Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, China
| | - Y Wu
- State Key Laboratory of Crop Stress of Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, China
| | - M Chou
- State Key Laboratory of Crop Stress of Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, China
| | - G Wei
- State Key Laboratory of Crop Stress of Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, China
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Wang L, Wei G, Song L, Li C, Zhang F, Yang Y, Lu C. Effect of renal sympathetic denervation on ventricular and neural remodeling. Herz 2018; 44:717-725. [PMID: 29651618 PMCID: PMC6890580 DOI: 10.1007/s00059-018-4698-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 11/07/2017] [Revised: 02/11/2018] [Accepted: 03/18/2018] [Indexed: 12/31/2022]
Abstract
Background This study assessed the therapeutic effects of renal sympathetic denervation (RDN) on post-myocardial infarction (MI) ventricular remodeling and sympathetic neural remodeling in dogs. The possible mechanisms and optimal time for treatment are discussed. Methods We randomly assigned 30 dogs to five groups: RDN 1 week before MI (RDN1w + MI; n = 6), RDN 1 week after MI (MI1w + RDN; n = 6), RDN 2 weeks after MI (MI2w + RDN; n = 6), control (N; n = 6), and MI (n = 6). A canine model of myocardial infarction was established by interventional occlusion with a gelatin sponge via the femoral artery. Brain natriuretic peptide (BNP) and endothelin-1 (ET-1) levels were measured and echocardiography was performed to assess cardiac function and heart size. All dogs were killed at the end of the experiment and samples of cardiac and renal arteries were obtained. The expression of matrix metalloproteinase (MMP)-2 and MMP-9 in cardiac and of tyrosine hydroxylase (TH) in renal arteries was assessed by immunohistochemistry. Sympathetic innervations in the infarction border zone were investigated via Western blotting and real-time PCR. Results Left ventricular function in the MI group decreased significantly, while plasma BNP and ET-1 levels as well as MMP-2 and MMP-9 expression increased. Compared with the MI group, the RD groups showed significantly reduced MMP‑2, MMP‑9, TH, and growth-associated protein (GAP) 43 expression in the RDN1w + MI, MI1w + RDN, and MI2w + RDN groups was significantly improved. Additionally, the expression of TH in renal arteries decreased after RDN. Conclusion RDN has preventive and therapeutic effects on post-MI ventricular remodeling and sympathetic neural remodeling. The mechanism of RDN is likely mediated through restraint of renal sympathetic nerve activity.
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Affiliation(s)
- L Wang
- Tianjin First Center hospital, Clinical medical college of Tianjin Medical university, Tianjin, China.,Deparment of Caridiology, Tianjin First Center Hospital, 24 Fukang Road,Naikai District, 300192, Tianjin, China
| | - G Wei
- Tianjin First Center hospital, Clinical medical college of Tianjin Medical university, Tianjin, China
| | - L Song
- Department of Digestion, Tianjin First Center Hospital, Tianjin, China
| | - C Li
- Deparment of Caridiology, Tianjin First Center Hospital, 24 Fukang Road,Naikai District, 300192, Tianjin, China
| | - F Zhang
- Deparment of Caridiology, Tianjin First Center Hospital, 24 Fukang Road,Naikai District, 300192, Tianjin, China
| | - Y Yang
- Department of Cardiology, Danzhou People's Hospital, Danzhou, China
| | - C Lu
- Deparment of Caridiology, Tianjin First Center Hospital, 24 Fukang Road,Naikai District, 300192, Tianjin, China.
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Pintacuda G, Wei G, Roustan C, Kirmizitas BA, Solcan N, Cerase A, Castello A, Mohammed S, Moindrot B, Nesterova TB, Brockdorff N. hnRNPK Recruits PCGF3/5-PRC1 to the Xist RNA B-Repeat to Establish Polycomb-Mediated Chromosomal Silencing. Mol Cell 2017; 68:955-969.e10. [PMID: 29220657 PMCID: PMC5735038 DOI: 10.1016/j.molcel.2017.11.013] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 09/15/2017] [Accepted: 11/10/2017] [Indexed: 01/01/2023]
Abstract
The Polycomb-repressive complexes PRC1 and PRC2 play a key role in chromosome silencing induced by the non-coding RNA Xist. Polycomb recruitment is initiated by the PCGF3/5-PRC1 complex, which catalyzes chromosome-wide H2A lysine 119 ubiquitylation, signaling recruitment of other PRC1 complexes, and PRC2. However, the molecular mechanism for PCGF3/5-PRC1 recruitment by Xist RNA is not understood. Here we define the Xist RNA Polycomb Interaction Domain (XR-PID), a 600 nt sequence encompassing the Xist B-repeat element. Deletion of XR-PID abolishes Xist-dependent Polycomb recruitment, in turn abrogating Xist-mediated gene silencing and reversing Xist-induced chromatin inaccessibility. We identify the RNA-binding protein hnRNPK as the principal XR-PID binding factor required to recruit PCGF3/5-PRC1. Accordingly, synthetically tethering hnRNPK to Xist RNA lacking XR-PID is sufficient for Xist-dependent Polycomb recruitment. Our findings define a key pathway for Polycomb recruitment by Xist RNA, providing important insights into mechanisms of chromatin modification by non-coding RNA. A 600 nt element in Xist RNA, XR-PID, is required for Polycomb recruitment Deletion of XR-PID abrogates Xist-mediated chromosome silencing hnRNPK binds XR-PID to recruit the Polycomb-initiating complex PCGF3/5-PRC1 Tethering hnRNPK to Xist RNA bypasses the requirement for XR-PID
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Affiliation(s)
- Greta Pintacuda
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Guifeng Wei
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Chloë Roustan
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Burcu Anil Kirmizitas
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Nicolae Solcan
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Andrea Cerase
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Alfredo Castello
- Posttranscriptional Networks in Infection and Cell Cycle Progression, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Shabaz Mohammed
- Proteomics Technology Development and Application, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Benoît Moindrot
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Tatyana B Nesterova
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Neil Brockdorff
- Developmental Epigenetics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
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Liu L, Yue H, Liu Q, Yuan J, Li J, Wei G, Chen X, Lu Y, Guo M, Luo J, Chen R. LncRNA MT1JP functions as a tumor suppressor by interacting with TIAR to modulate the p53 pathway. Oncotarget 2017; 7:15787-800. [PMID: 26909858 PMCID: PMC4941277 DOI: 10.18632/oncotarget.7487] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [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: 09/09/2015] [Accepted: 02/05/2016] [Indexed: 01/13/2023] Open
Abstract
Accumulating evidence suggests that long noncoding RNAs (lncRNAs) play important roles in transcriptional regulation, whereas the extent to which the lncRNAs also function at the posttranscriptional level is less known. In the present study, we report a lncRNA named MT1JP which acts as a tumor suppressor through a posttranscriptional mechanism. We found that MT1JP is differentially expressed in tumor tissues by analyzing data from a customized microarray applied to 76 pairs of matched normal and cancer tissue samples. By associating with the RNA-binding protein TIAR, MT1JP enhanced the translation of the master transcription factor p53, thereby regulating a series of pathways involving p53, such as the cell cycle, apoptosis and proliferation. When MT1JP was down-regulated, the protein level of p53 declined, which in turn accelerated cell deterioration and tumor formation. Moreover, differential expression of MT1JP in cancerous and normal tissues suggests that it may be a promising prognostic marker and a therapeutic target. Taken together, we identified MT1JP as a critical factor in restraining cell transformation by modulating p53 translation through interactions with TIAR, and this finding is likely to shed new light on future investigations about posttranscriptional or translational effects of lncRNAs during cell transformation.
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Affiliation(s)
- Lihui Liu
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Beijing Key Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Graduate School of Chinese Academy of Sciences, Beijing 100049, China
| | - Haiyan Yue
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Beijing Key Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Graduate School of Chinese Academy of Sciences, Beijing 100049, China
| | - Qinghua Liu
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Beijing Key Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Jiao Yuan
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Beijing Key Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Jing Li
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Center of Excellence in Tissue Engineering, School of Basic Medicine, Peking Union Medical College, Beijing 100005, China
| | - Guifeng Wei
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Beijing Key Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiaomin Chen
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Beijing Key Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Youyong Lu
- Laboratory of Molecular Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Mingzhou Guo
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing 100853, China
| | - Jianjun Luo
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Beijing Key Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Runsheng Chen
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Beijing Key Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,Research Network of Computational Biology, RNCB, Beijing 100101, China
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Ellis SC, Kuhlmann S, Kuehn K, Spinka H, Underwood D, Gupta RR, Ocola LE, Liu P, Wei G, Stern NP, Bland-Hawthorn J, Tuthill P. Photonic ring resonator filters for astronomical OH suppression. Opt Express 2017; 25:15868-15889. [PMID: 28789099 DOI: 10.1364/oe.25.015868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/19/2017] [Indexed: 06/07/2023]
Abstract
Ring resonators provide a means of filtering specific wavelengths from a waveguide, and optionally dropping the filtered wavelengths into a second waveguide. Both of these features are potentially useful for astronomical instruments. In this paper we focus on their use as notch filters to remove the signal from atmospheric OH emission lines from astronomical spectra. We derive the design requirements for ring resonators for OH suppression from theory and finite difference time domain simulations. We find that rings with small radii (< 10 μm) are required to provide an adequate free spectral range, leading to high index contrast materials such as Si and Si3N4. Critically coupled rings with high self-coupling coefficients should provide the necessary Q factors, suppression depth, and throughput for efficient OH suppression, but will require post-inscription tuning of the coupling and the resonant wavelengths. The overall prospects for the use of ring resonators in astronomical instruments is promising, provided efficient fibre-chip coupling can be achieved.
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Han M, Zou W, Chang H, Yu Y, Zhang H, Li S, Cheng H, Wei G, Chen Y, Reinke V, Xu T, Kang L. A Systematic RNAi Screen Reveals a Novel Role of a Spindle Assembly Checkpoint Protein BuGZ in Synaptic Transmission in C. elegans. Front Mol Neurosci 2017; 10:141. [PMID: 28553202 PMCID: PMC5425591 DOI: 10.3389/fnmol.2017.00141] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 02/28/2017] [Accepted: 04/25/2017] [Indexed: 11/29/2022] Open
Abstract
Synaptic vesicles (SV) store various neurotransmitters that are released at the synapse. The molecular mechanisms of biogenesis, exocytosis, and endocytosis for SV, however, remain largely elusive. In this study, using Complex Object Parametric Analysis and Sorter (COPAS) to monitor the fluorescence of synapto-pHluorin (SpH), we performed a whole-genome RNAi screen in C. elegans to identify novel genetic modulators in SV cycling. One hundred seventy six genes that up-regulating SpH fluorescence and 96 genes that down-regulating SpH fluorescence were identified after multi-round screen. Among these genes, B0035.1 (bugz-1) encodes ortholog of mammalian C2H2 zinc-finger protein BuGZ/ZNF207, which is a spindle assembly checkpoint protein essential for mitosis in human cells. Combining electrophysiology, imaging and behavioral assays, we reveal that depletion of BuGZ-1 results in defects in locomotion. We further demonstrate that BuGZ-1 promotes SV recycling by regulating the expression levels of endocytosis-related genes such as rab11.1. Therefore, we have identified a bunch of potential genetic modulators in SV cycling, and revealed an unexpected role of BuGZ-1 in regulating synaptic transmission.
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Affiliation(s)
- Mei Han
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Neurobiology, Institute of Neuroscience, Zhejiang University School of MedicineHangzhou, China.,National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of SciencesBeijing, China.,Department of Genetics, Yale University School of MedicineNew Haven, CT, USA
| | - Wenjuan Zou
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Neurobiology, Institute of Neuroscience, Zhejiang University School of MedicineHangzhou, China
| | - Hao Chang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of SciencesBeijing, China.,Department of Genetics, Yale University School of MedicineNew Haven, CT, USA
| | - Yong Yu
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of SciencesBeijing, China
| | - Haining Zhang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of SciencesBeijing, China
| | - Shitian Li
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Neurobiology, Institute of Neuroscience, Zhejiang University School of MedicineHangzhou, China
| | - Hankui Cheng
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Neurobiology, Institute of Neuroscience, Zhejiang University School of MedicineHangzhou, China
| | - Guifeng Wei
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of SciencesBeijing, China
| | - Yan Chen
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of SciencesBeijing, China
| | - Valerie Reinke
- Department of Genetics, Yale University School of MedicineNew Haven, CT, USA
| | - Tao Xu
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of SciencesBeijing, China
| | - Lijun Kang
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Neurobiology, Institute of Neuroscience, Zhejiang University School of MedicineHangzhou, China
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Wei G, Xiaobin G, Xian-Shu G, Mingwei M, Ming C, Chuan P. EP-1223: Comparing concurrent versus sequential chemoradiotherapy in locally advanced NSCLC. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31658-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wei G, Patel R, Walsh C, Barrera M, Fagan P, Murphy D, Christiansen J, Shoemaker R, Hornby Z, Li G. Entrectinib, a highly potent pan-Trk, ROS1, and ALK inhibitor, has broad-spectrum, histology-agnostic anti-tumor activity in molecularly defined cancers. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32678-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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50
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Ho A, Wei G, Maneval E, Esquibel V, Berger M, Haque S, Patel R, Walsh C, Hornby Z, Multani P, Li G, Drilon A. Overcoming drug resistance to Trk inhibition by rational combination of entrectinib and trametinib: from bench to bedside. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32615-6] [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: 10/20/2022]
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