LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 57

Search options

  1. Article: Aagab is required for zebrafish larval development by regulating neural activity.

    Ding, Shihui / Aziz, Tursunjan / Meng, Anming / Jia, Shunji

    Journal of genetics and genomics = Yi chuan xue bao

    2024  

    Abstract: Clathrin-mediated endocytosis has been implicated in various physiological processes, including nutrient uptake, signal transduction, synaptic vesicle recycling, maintenance of cell polarity, and antigen presentation. Despite prior knowledge of its ... ...

    Abstract Clathrin-mediated endocytosis has been implicated in various physiological processes, including nutrient uptake, signal transduction, synaptic vesicle recycling, maintenance of cell polarity, and antigen presentation. Despite prior knowledge of its importance as a key regulator in promoting clathrin-mediated endocytosis, the physiological function of α- and γ-adaptin binding protein (aagab) remains elusive. In this study, we investigate the biological function of aagab during zebrafish development. We establish a loss-of-function mutant of the aagab gene in zebrafish, revealing impaired swimming and early larval mortality. Given the high expression level of the aagab gene in the brain, we probe into its physiological role in the nervous system. aagab mutants display subdued calcium responses and local field potential in the optic tectal neurons, aligning with reduced neurotransmitter release (e.g., norepinephrine) in the tectal neuropil of aagab mutants. Overexpressing aagab message RNA (mRNA) or nervous stimulant treatment in mutants restores neurotransmitter release, calcium responses, swimming ability, and survival. Furthermore, our observations show delayed release of FM 1-43 in AAGAB knockdown differentiated neuroblastoma cells, pointing towards a probable link to defective clathrin-mediated synaptic vesicle recycling. In conclusion, our study underscores the significance of Aagab in neurobiology and suggests its potential impacts in neurological disorders.
    Language English
    Publishing date 2024-01-20
    Publishing country China
    Document type Journal Article
    ZDB-ID 2374568-X
    ISSN 1873-5533 ; 1673-8527
    ISSN (online) 1873-5533
    ISSN 1673-8527
    DOI 10.1016/j.jgg.2024.01.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: TGFβ family signaling and development.

    Jia, Shunji / Meng, Anming

    Development (Cambridge, England)

    2021  Volume 148, Issue 5

    Abstract: The transforming growth factor β (TGFβ) signaling family is evolutionarily conserved in metazoans. The signal transduction mechanisms of TGFβ family members have been expansively investigated and are well understood. During development and homeostasis, ... ...

    Abstract The transforming growth factor β (TGFβ) signaling family is evolutionarily conserved in metazoans. The signal transduction mechanisms of TGFβ family members have been expansively investigated and are well understood. During development and homeostasis, numerous TGFβ family members are expressed in various cell types with temporally changing levels, playing diverse roles in embryonic development, adult tissue homeostasis and human diseases by regulating cell proliferation, differentiation, adhesion, migration and apoptosis. Here, we discuss the molecular mechanisms underlying signal transduction and regulation of the TGFβ subfamily pathways, and then highlight their key functions in mesendoderm induction, dorsoventral patterning and laterality development, as well as in the formation of several representative tissues/organs.
    MeSH term(s) Animals ; Bone Morphogenetic Proteins/metabolism ; Embryonic Development/physiology ; Germ Layers/metabolism ; Nodal Protein/metabolism ; Organogenesis ; Receptors, Transforming Growth Factor beta/metabolism ; Signal Transduction ; Smad Proteins/metabolism ; Transforming Growth Factor beta/chemistry ; Transforming Growth Factor beta/metabolism
    Chemical Substances Bone Morphogenetic Proteins ; Nodal Protein ; Receptors, Transforming Growth Factor beta ; Smad Proteins ; Transforming Growth Factor beta
    Language English
    Publishing date 2021-03-12
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 90607-4
    ISSN 1477-9129 ; 0950-1991
    ISSN (online) 1477-9129
    ISSN 0950-1991
    DOI 10.1242/dev.188490
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Epistatic genetic interactions between Insm1 and Ikzf2 during cochlear outer hair cell development

    Shuting Li / Shunji He / Ying Lu / Shiqi Jia / Zhiyong Liu

    Cell Reports, Vol 42, Iss 5, Pp 112504- (2023)

    2023  

    Abstract: Summary: The cochlea harbors two types of sound receptors, outer hair cells (OHCs) and inner hair cells (IHCs). OHCs transdifferentiate into IHCs in Insm1 mutants, and OHCs in Ikzf2-deficient mice are dysfunctional and maintain partial IHC gene ... ...

    Abstract Summary: The cochlea harbors two types of sound receptors, outer hair cells (OHCs) and inner hair cells (IHCs). OHCs transdifferentiate into IHCs in Insm1 mutants, and OHCs in Ikzf2-deficient mice are dysfunctional and maintain partial IHC gene expression. Insm1 potentially acts as a positive but indirect regulator of Ikzf2, considering that Insm1 is expressed earlier than Ikzf2 and primarily functions as a transcriptional repressor. However, direct evidence of this possibility is lacking. Here, we report the following results: first, Insm1 overexpression in IHCs leads to ectopic Ikzf2 expression. Second, Ikzf2 expression is repressed in Insm1-deficient OHCs, and forced expression of Ikzf2 mitigates the OHC abnormality in Insm1 mutants. Last, dual ablation of Insm1 and Ikzf2 generates a similar OHC phenotype as does Insm1 ablation alone. Collectively, our findings reveal the transcriptional cascade from Insm1 to Ikzf2, which should facilitate future investigation of the molecular mechanisms underlying OHC development and regeneration.
    Keywords CP: Developmental biology ; CP: Neuroscience ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2023-05-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  4. Article ; Online: Epistatic genetic interactions between Insm1 and Ikzf2 during cochlear outer hair cell development.

    Li, Shuting / He, Shunji / Lu, Ying / Jia, Shiqi / Liu, Zhiyong

    Cell reports

    2023  Volume 42, Issue 5, Page(s) 112504

    Abstract: The cochlea harbors two types of sound receptors, outer hair cells (OHCs) and inner hair cells (IHCs). OHCs transdifferentiate into IHCs in Insm1 mutants, and OHCs in Ikzf2-deficient mice are dysfunctional and maintain partial IHC gene expression. Insm1 ... ...

    Abstract The cochlea harbors two types of sound receptors, outer hair cells (OHCs) and inner hair cells (IHCs). OHCs transdifferentiate into IHCs in Insm1 mutants, and OHCs in Ikzf2-deficient mice are dysfunctional and maintain partial IHC gene expression. Insm1 potentially acts as a positive but indirect regulator of Ikzf2, considering that Insm1 is expressed earlier than Ikzf2 and primarily functions as a transcriptional repressor. However, direct evidence of this possibility is lacking. Here, we report the following results: first, Insm1 overexpression in IHCs leads to ectopic Ikzf2 expression. Second, Ikzf2 expression is repressed in Insm1-deficient OHCs, and forced expression of Ikzf2 mitigates the OHC abnormality in Insm1 mutants. Last, dual ablation of Insm1 and Ikzf2 generates a similar OHC phenotype as does Insm1 ablation alone. Collectively, our findings reveal the transcriptional cascade from Insm1 to Ikzf2, which should facilitate future investigation of the molecular mechanisms underlying OHC development and regeneration.
    MeSH term(s) Animals ; Mice ; Cochlea/metabolism ; Hair Cells, Auditory, Inner/metabolism ; Hair Cells, Auditory, Outer/metabolism ; Repressor Proteins/genetics ; Repressor Proteins/metabolism ; Transcription Factors/metabolism
    Chemical Substances Insm1 protein, mouse ; Repressor Proteins ; Transcription Factors ; Ikzf2 protein, mouse
    Language English
    Publishing date 2023-05-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2649101-1
    ISSN 2211-1247 ; 2211-1247
    ISSN (online) 2211-1247
    ISSN 2211-1247
    DOI 10.1016/j.celrep.2023.112504
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Molecular basis for bipartite recognition of histone H3 by the PZP domain of PHF14.

    Zheng, Shuangping / Bi, Yucong / Chen, Haining / Gong, Bo / Jia, Shunji / Li, Haitao

    Nucleic acids research

    2021  Volume 49, Issue 15, Page(s) 8961–8973

    Abstract: Histone recognition constitutes a key epigenetic mechanism in gene regulation and cell fate decision. PHF14 is a conserved multi-PHD finger protein that has been implicated in organ development, tissue homeostasis, and tumorigenesis. Here we show that ... ...

    Abstract Histone recognition constitutes a key epigenetic mechanism in gene regulation and cell fate decision. PHF14 is a conserved multi-PHD finger protein that has been implicated in organ development, tissue homeostasis, and tumorigenesis. Here we show that PHF14 reads unmodified histone H3(1-34) through an integrated PHD1-ZnK-PHD2 cassette (PHF14PZP). Our binding, structural and HDX-MS analyses revealed a feature of bipartite recognition, in which PHF14PZP utilizes two distinct surfaces for concurrent yet separable engagement of segments H3-Nter (e.g. 1-15) and H3-middle (e.g. 14-34) of H3(1-34). Structural studies revealed a novel histone H3 binding mode by PHD1 of PHF14PZP, in which a PHF14-unique insertion loop but not the core β-strands of a PHD finger dominates H3K4 readout. Binding studies showed that H3-PHF14PZP engagement is sensitive to modifications occurring to H3 R2, T3, K4, R8 and K23 but not K9 and K27, suggesting multiple layers of modification switch. Collectively, our work calls attention to PHF14 as a 'ground' state (unmodified) H3(1-34) reader that can be negatively regulated by active marks, thus providing molecular insights into a repressive function of PHF14 and its derepression.
    MeSH term(s) Allosteric Regulation ; Animals ; Crystallography, X-Ray ; Histones/chemistry ; Histones/metabolism ; Humans ; Models, Molecular ; Mutagenesis ; Nuclear Proteins/chemistry ; Protein Binding ; Protein Interaction Domains and Motifs ; Transcription Factors/chemistry ; Zebrafish Proteins/chemistry ; Zebrafish Proteins/genetics ; Zebrafish Proteins/metabolism
    Chemical Substances Histones ; Nuclear Proteins ; PHF14 protein, human ; Transcription Factors ; Zebrafish Proteins
    Language English
    Publishing date 2021-08-06
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 186809-3
    ISSN 1362-4962 ; 1362-4954 ; 0301-5610 ; 0305-1048
    ISSN (online) 1362-4962 ; 1362-4954
    ISSN 0301-5610 ; 0305-1048
    DOI 10.1093/nar/gkab670
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: A Golgi-derived vesicle potentiates PtdIns4P to PtdIns3P conversion for endosome fission.

    Gong, Bo / Guo, Yuting / Ding, Shihui / Liu, Xiaohui / Meng, Anming / Li, Dong / Jia, Shunji

    Nature cell biology

    2021  Volume 23, Issue 7, Page(s) 782–795

    Abstract: Endosome fission is essential for cargo sorting and targeting in the endosomal system. However, whether organelles other than the endoplasmic reticulum (ER) participate in endosome fission through membrane contacts is unknown. Here, we characterize a ... ...

    Abstract Endosome fission is essential for cargo sorting and targeting in the endosomal system. However, whether organelles other than the endoplasmic reticulum (ER) participate in endosome fission through membrane contacts is unknown. Here, we characterize a Golgi-derived vesicle, the SEC14L2 compartment, that plays a unique role in facilitating endosome fission through ternary contacts with endosomes and the ER. Localized to the ER-mediated endosome fission site, the phosphatidylinositol transfer protein SEC14L2 promotes phosphatidylinositol 4-phosphate (PtdIns4P) to phosphatidylinositol 3-phosphate (PtdIns3P) conversion before endosome fission. In the absence of SEC14L2, endosome fission is attenuated and more enlarged endosomes arise due to endosomal accumulation of PtdIns4P and reduction in PtdIns3P. Collectively, our data suggest roles of the Golgi network in ER-associated endosome fission and a mechanism involving ER-endosome contacts in the regulation of endosomal phosphoinositide conversion.
    MeSH term(s) Animals ; COS Cells ; Carrier Proteins/genetics ; Carrier Proteins/metabolism ; Chlorocebus aethiops ; Class III Phosphatidylinositol 3-Kinases/genetics ; Class III Phosphatidylinositol 3-Kinases/metabolism ; Endoplasmic Reticulum/genetics ; Endoplasmic Reticulum/metabolism ; Endosomes/genetics ; Endosomes/metabolism ; Golgi Apparatus/genetics ; Golgi Apparatus/metabolism ; Mice, Inbred C57BL ; Mice, Knockout ; Phosphatidylinositol Phosphates/metabolism ; Protein Transport ; Zebrafish Proteins/genetics ; Zebrafish Proteins/metabolism ; Mice
    Chemical Substances Carrier Proteins ; Phosphatidylinositol Phosphates ; SEC14L3 protein, human ; Sec14l3 protein, mouse ; Zebrafish Proteins ; phosphatidylinositol 3-phosphate ; phosphatidylinositol 4-phosphate ; Class III Phosphatidylinositol 3-Kinases (EC 2.7.1.137)
    Language English
    Publishing date 2021-06-28
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Video-Audio Media
    ZDB-ID 1474722-4
    ISSN 1476-4679 ; 1465-7392
    ISSN (online) 1476-4679
    ISSN 1465-7392
    DOI 10.1038/s41556-021-00704-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Temporospatial inhibition of Erk signaling is required for lymphatic valve formation.

    Meng, Yaping / Lv, Tong / Zhang, Junfeng / Shen, Weimin / Li, Lifang / Li, Yaqi / Liu, Xin / Lei, Xing / Lin, Xuguang / Xu, Hanfang / Meng, Anming / Jia, Shunji

    Signal transduction and targeted therapy

    2023  Volume 8, Issue 1, Page(s) 342

    Abstract: Intraluminal lymphatic valves (LVs) and lymphovenous valves (LVVs) are critical to ensure the unidirectional flow of lymphatic fluid. Morphological abnormalities in these valves always cause lymph or blood reflux, and result in lymphedema. However, the ... ...

    Abstract Intraluminal lymphatic valves (LVs) and lymphovenous valves (LVVs) are critical to ensure the unidirectional flow of lymphatic fluid. Morphological abnormalities in these valves always cause lymph or blood reflux, and result in lymphedema. However, the underlying molecular mechanism of valve development remains poorly understood. We here report the implication of Efnb2-Ephb4-Rasa1 regulated Erk signaling axis in lymphatic valve development with identification of two new valve structures. Dynamic monitoring of phospho-Erk activity indicated that Erk signaling is spatiotemporally inhibited in some lymphatic endothelial cells (LECs) during the valve cell specification. Inhibition of Erk signaling via simultaneous depletion of zygotic erk1 and erk2 or treatment with MEK inhibitor selumetinib causes lymphatic vessel hypoplasia and lymphatic valve hyperplasia, suggesting opposite roles of Erk signaling during these two processes. ephb4b mutants, efnb2a;efnb2b or rasa1a;rasa1b double mutants all have defective LVs and LVVs and exhibit blood reflux into lymphatic vessels with an edema phenotype. Importantly, the valve defects in ephb4b or rasa1a;rasa1b mutants are mitigated with high-level gata2 expression in the presence of MEK inhibitors. Therefore, Efnb2-Ephb4 signaling acts to suppress Erk activation in valve-forming cells to promote valve specification upstream of Rasa1. Not only do our findings reveal a molecular mechanism of lymphatic valve formation, but also provide a basis for the treatment of lymphatic disorders.
    MeSH term(s) Endothelial Cells ; Lymphatic Vessels ; Signal Transduction/genetics ; Phosphorylation ; Mitogen-Activated Protein Kinase Kinases
    Chemical Substances Mitogen-Activated Protein Kinase Kinases (EC 2.7.12.2)
    Language English
    Publishing date 2023-09-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2886872-9
    ISSN 2059-3635 ; 2095-9907
    ISSN (online) 2059-3635
    ISSN 2095-9907
    DOI 10.1038/s41392-023-01571-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Silibinin inhibits ethanol- or acetaldehyde-induced ferroptosis in liver cell lines.

    Song, Xiao-Yu / Liu, Peng-Cheng / Liu, Wei-Wei / Zhou, Jia / Hayashi, Toshihiko / Mizuno, Kazunori / Hattori, Shunji / Fujisaki, Hitomi / Ikejima, Takashi

    Toxicology in vitro : an international journal published in association with BIBRA

    2022  Volume 82, Page(s) 105388

    Abstract: Alcoholic liver disease has become one of the main causes of liver injury, and its prevention and cure are important medical tasks. Silibinin, a natural flavonoid glycoside, is a conventional hepatic protectant. This study elucidates the modulation of ... ...

    Abstract Alcoholic liver disease has become one of the main causes of liver injury, and its prevention and cure are important medical tasks. Silibinin, a natural flavonoid glycoside, is a conventional hepatic protectant. This study elucidates the modulation of ferroptosis in silibinin's protective effects on ethanol- or acetaldehyde-induced liver cell damage by using human carcinomatous liver HepG2 cells and immortalized liver HL7702 cells. Our results show that ferroptosis is induced in the cells treated with ethanol or acetaldehyde, as evidenced by the increased ROS stress and iron level. Silibinin resolves the oxidative stress and reduces iron level. Ferroptosis induced by ethanol- or acetaldehyde involving nuclear receptor co-activator 4 (NCOA4)-dependent autophagic degradation of ferritin, a protein for storing iron is rescued by silibinin. PINK1 and Parkin-mediated mitophagy is arrested in ethanol- or acetaldehyde-treated cells but reversed by silibinin. Ferritin degradation and ROS level are further increased when PINK1 or Parkin is silenced in the cells treated with ethanol or acetaldehyde. Collectively, our study reveals that silibinin inhibits ethanol- or acetaldehyde-induced ferroptosis in two liver cell lines, HepG2 and HL7702 cells, providing new therapeutic strategies for alcoholic liver injury.
    MeSH term(s) Acetaldehyde/toxicity ; Cell Line ; Ethanol/toxicity ; Ferritins ; Ferroptosis ; Humans ; Iron ; Liver ; Protein Kinases ; Reactive Oxygen Species ; Silybin/pharmacology ; Ubiquitin-Protein Ligases
    Chemical Substances Reactive Oxygen Species ; Ethanol (3K9958V90M) ; Silybin (4RKY41TBTF) ; Ferritins (9007-73-2) ; Iron (E1UOL152H7) ; Ubiquitin-Protein Ligases (EC 2.3.2.27) ; Protein Kinases (EC 2.7.-) ; Acetaldehyde (GO1N1ZPR3B)
    Language English
    Publishing date 2022-05-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 639064-x
    ISSN 1879-3177 ; 0887-2333
    ISSN (online) 1879-3177
    ISSN 0887-2333
    DOI 10.1016/j.tiv.2022.105388
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Sec14l3 potentiates VEGFR2 signaling to regulate zebrafish vasculogenesis

    Bo Gong / Zhihao Li / Wanghua Xiao / Guangyuan Li / Shihui Ding / Anming Meng / Shunji Jia

    Nature Communications, Vol 10, Iss 1, Pp 1-

    2019  Volume 16

    Abstract: The growth factor VEGF is known to regulate vasculogenesis but the downstream pathways activated are unclear. Here, the authors report that Sec14l3, a member of the PITP (phosphatidyl inositol transfer proteins) family regulates the formation of ... ...

    Abstract The growth factor VEGF is known to regulate vasculogenesis but the downstream pathways activated are unclear. Here, the authors report that Sec14l3, a member of the PITP (phosphatidyl inositol transfer proteins) family regulates the formation of zebrafish vasculature by promoting VEGFR2 endocytic trafficking.
    Keywords Science ; Q
    Language English
    Publishing date 2019-04-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  10. Article ; Online: Sec14l3 potentiates VEGFR2 signaling to regulate zebrafish vasculogenesis

    Bo Gong / Zhihao Li / Wanghua Xiao / Guangyuan Li / Shihui Ding / Anming Meng / Shunji Jia

    Nature Communications, Vol 10, Iss 1, Pp 1-

    2019  Volume 16

    Abstract: The growth factor VEGF is known to regulate vasculogenesis but the downstream pathways activated are unclear. Here, the authors report that Sec14l3, a member of the PITP (phosphatidyl inositol transfer proteins) family regulates the formation of ... ...

    Abstract The growth factor VEGF is known to regulate vasculogenesis but the downstream pathways activated are unclear. Here, the authors report that Sec14l3, a member of the PITP (phosphatidyl inositol transfer proteins) family regulates the formation of zebrafish vasculature by promoting VEGFR2 endocytic trafficking.
    Keywords Science ; Q
    Language English
    Publishing date 2019-04-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

To top