1
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Kagan Ben Tikva S, Gurwitz N, Sivan E, Hirsch D, Hezroni-Barvyi H, Biram A, Moss L, Wigoda N, Egozi A, Monziani A, Golani O, Gross M, Tenenbaum A, Shulman Z. T cell help induces Myc transcriptional bursts in germinal center B cells during positive selection. Sci Immunol 2024; 9:eadj7124. [PMID: 38552029 DOI: 10.1126/sciimmunol.adj7124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 02/09/2024] [Indexed: 04/02/2024]
Abstract
Antibody affinity maturation occurs in secondary lymphoid organs within germinal centers (GCs). At these sites, B cells mutate their antibody-encoding genes in the dark zone, followed by preferential selection of the high-affinity variants in the light zone by T cells. The strength of the T cell-derived selection signals is proportional to the B cell receptor affinity and to the magnitude of subsequent Myc expression. However, because the lifetime of Myc mRNA and its corresponding protein is very short, it remains unclear how T cells induce sustained Myc levels in positively selected B cells. Here, by direct visualization of mRNA and active transcription sites in situ, we found that an increase in transcriptional bursts promotes Myc expression during B cell positive selection in GCs. Elevated T cell help signals predominantly enhance the percentage of cells expressing Myc in GCs as opposed to augmenting the quantity of Myc transcripts per individual cell. Visualization of transcription start sites in situ revealed that T cell help promotes an increase in the frequency of transcriptional bursts at the Myc locus in GC B cells located primarily in the LZ apical rim. Thus, the rise in Myc, which governs positive selection of B cells in GCs, reflects an integration of transcriptional activity over time rather than an accumulation of transcripts at a specific time point.
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Affiliation(s)
- Sharon Kagan Ben Tikva
- Department of Systems Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Neta Gurwitz
- Department of Systems Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ehud Sivan
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Dana Hirsch
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Hadas Hezroni-Barvyi
- Department of Systems Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Adi Biram
- Department of Systems Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Lihee Moss
- Department of Systems Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Noa Wigoda
- Bioinformatics unit, Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Adi Egozi
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Alan Monziani
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ofra Golani
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Menachem Gross
- Department of Otolaryngology-Head and Neck Surgery, Hadassah Medical Center, Jerusalem 9112102, Israel
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 9112102, Israel
| | - Ariel Tenenbaum
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 9112102, Israel
- Department of Pediatrics, Hadassah Medical Organization and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 9112102, Israel
| | - Ziv Shulman
- Department of Systems Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
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2
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Dey S, Barkai O, Gokhman I, Suissa S, Haffner-Krausz R, Wigoda N, Feldmesser E, Ben-Dor S, Kovalenko A, Binshtok A, Yaron A. Kinesin family member 2A gates nociception. Cell Rep 2023; 42:113257. [PMID: 37851573 DOI: 10.1016/j.celrep.2023.113257] [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: 03/23/2023] [Revised: 08/23/2023] [Accepted: 09/27/2023] [Indexed: 10/20/2023] Open
Abstract
Nociceptive axons undergo remodeling as they innervate their targets during development and in response to environmental insults and pathological conditions. How is nociceptive morphogenesis regulated? Here, we show that the microtubule destabilizer kinesin family member 2A (Kif2a) is a key regulator of nociceptive terminal structures and pain sensitivity. Ablation of Kif2a in sensory neurons causes hyperinnervation and hypersensitivity to noxious stimuli in young adult mice, whereas touch sensitivity and proprioception remain unaffected. Computational modeling predicts that structural remodeling is sufficient to explain the phenotypes. Furthermore, Kif2a deficiency triggers a transcriptional response comprising sustained upregulation of injury-related genes and homeostatic downregulation of highly specific channels and receptors at the late stage. The latter effect can be predicted to relieve the hyperexcitability of nociceptive neurons, despite persisting morphological aberrations, and indeed correlates with the resolution of pain hypersensitivity. Overall, we reveal a critical control node defining nociceptive terminal structure, which is regulating nociception.
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Affiliation(s)
- Swagata Dey
- Department of Biomolecular Sciences and Department of Molecular Neuroscience, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Omer Barkai
- Department of Medical Neurobiology, Institute for Medical Research Israel-Canada, The Hebrew University-Hadassah School of Medicine, Jerusalem 91120, Israel; The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel; F.M. Kirby Neurobiology Center, Boston Children's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Irena Gokhman
- Department of Biomolecular Sciences and Department of Molecular Neuroscience, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Sapir Suissa
- Department of Biomolecular Sciences and Department of Molecular Neuroscience, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rebecca Haffner-Krausz
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Noa Wigoda
- Bioinformatics Unit, Life Science Core Facilities, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Ester Feldmesser
- Bioinformatics Unit, Life Science Core Facilities, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Shifra Ben-Dor
- Bioinformatics Unit, Life Science Core Facilities, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Andrew Kovalenko
- Department of Biomolecular Sciences and Department of Molecular Neuroscience, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Alexander Binshtok
- Department of Medical Neurobiology, Institute for Medical Research Israel-Canada, The Hebrew University-Hadassah School of Medicine, Jerusalem 91120, Israel; The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Avraham Yaron
- Department of Biomolecular Sciences and Department of Molecular Neuroscience, Weizmann Institute of Science, Rehovot 76100, Israel.
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3
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Sapoznikov A, Kozlovski S, Levi N, Feigelson SW, Regev O, Davidzohn N, Ben-Dor S, Haffner-Krausz R, Feldmesser E, Wigoda N, Petrovich-Kopitman E, Biton M, Alon R. Dendritic cell ICAM-1 strengthens synapses with CD8 T cells but is not required for their early differentiation. Cell Rep 2023; 42:112864. [PMID: 37494182 DOI: 10.1016/j.celrep.2023.112864] [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: 11/11/2021] [Revised: 06/13/2023] [Accepted: 07/10/2023] [Indexed: 07/28/2023] Open
Abstract
Lymphocyte priming in lymph nodes (LNs) was postulated to depend on the formation of stable T cell receptor (TCR)-specific immune synapses (ISs) with antigen (Ag)-presenting dendritic cells (DCs). The high-affinity LFA-1 ligand ICAM-1 was implicated in different ISs studied in vitro. We dissect the in vivo roles of endogenous DC ICAM-1 in Ag-stimulated T cell proliferation and differentiation and find that under type 1 polarizing conditions in vaccinated or vaccinia virus-infected skin-draining LNs, Ag-presenting DCs engage in ICAM-1-dependent stable conjugates with a subset of Ag-specific CD8 blasts. Nevertheless, in the absence of these conjugates, CD8 lymphocyte proliferation and differentiation into functional cytotoxic T cells (CTLs) and skin homing effector lymphocytes takes place normally. Our results suggest that although CD8 T cell blasts engage in tight ICAM-1-dependent DC-T ISs, firm ISs are dispensable for TCR-triggered proliferation and differentiation into productive effector lymphocytes.
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Affiliation(s)
- Anita Sapoznikov
- Deptartment of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Stav Kozlovski
- Deptartment of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Nehora Levi
- Deptartment of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Sara W Feigelson
- Deptartment of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Ofer Regev
- Deptartment of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Natalia Davidzohn
- Deptartment of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Shifra Ben-Dor
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | | | - Ester Feldmesser
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Noa Wigoda
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | | | - Moshe Biton
- Deptartment of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel.
| | - Ronen Alon
- Deptartment of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel.
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4
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Levi N, Papismadov N, Majewska J, Roitman L, Wigoda N, Eilam R, Tsoory M, Rotkopf R, Ovadya Y, Akiva H, Regev O, Krizhanovsky V. p21 facilitates chronic lung inflammation via epithelial and endothelial cells. Aging (Albany NY) 2023; 15:2395-2417. [PMID: 36996500 PMCID: PMC10120903 DOI: 10.18632/aging.204622] [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: 11/08/2022] [Accepted: 03/17/2023] [Indexed: 04/01/2023]
Abstract
Cellular senescence is a stable state of cell cycle arrest that regulates tissue integrity and protects the organism from tumorigenesis. However, the accumulation of senescent cells during aging contributes to age-related pathologies. One such pathology is chronic lung inflammation. p21 (CDKN1A) regulates cellular senescence via inhibition of cyclin-dependent kinases (CDKs). However, its role in chronic lung inflammation and functional impact on chronic lung disease, where senescent cells accumulate, is less understood. To elucidate the role of p21 in chronic lung inflammation, we subjected p21 knockout (p21-/-) mice to repetitive inhalations of lipopolysaccharide (LPS), an exposure that leads to chronic bronchitis and accumulation of senescent cells. p21 knockout led to a reduced presence of senescent cells, alleviated the pathological manifestations of chronic lung inflammation, and improved the fitness of the mice. The expression profiling of the lung cells revealed that resident epithelial and endothelial cells, but not immune cells, play a significant role in mediating the p21-dependent inflammatory response following chronic LPS exposure. Our results implicate p21 as a critical regulator of chronic bronchitis and a driver of chronic airway inflammation and lung destruction.
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Affiliation(s)
- Naama Levi
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Nurit Papismadov
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Julia Majewska
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Lior Roitman
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Noa Wigoda
- Department of Life Sciences Core Facilities, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Raya Eilam
- Department of Veterinary Resources, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Michael Tsoory
- Department of Veterinary Resources, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ron Rotkopf
- Department of Life Sciences Core Facilities, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Yossi Ovadya
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Hagay Akiva
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ofer Regev
- Department of Immunology, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Valery Krizhanovsky
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 7610001, Israel
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5
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Grunwald Y, Wigoda N, Sade N, Yaaran A, Torne T, Gosa SC, Moran N, Moshelion M. Arabidopsis leaf hydraulic conductance is regulated by xylem sap pH, controlled, in turn, by a P-type H + -ATPase of vascular bundle sheath cells. Plant J 2021; 106:301-313. [PMID: 33735498 DOI: 10.1111/tpj.15235] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 03/06/2021] [Accepted: 03/09/2021] [Indexed: 05/28/2023]
Abstract
The leaf vascular bundle sheath cells (BSCs) that tightly envelop the leaf veins, are a selective and dynamic barrier to xylem sap water and solutes radially entering the mesophyll cells. Under normal conditions, xylem sap pH below 6 is presumably important for driving and regulating the transmembranal solute transport. Having discovered recently a differentially high expression of a BSC proton pump, AHA2, we now test the hypothesis that it regulates the xylem sap pH and leaf radial water fluxes. We monitored the xylem sap pH in the veins of detached leaves of wild-type Arabidopsis, AHA mutants and aha2 mutants complemented with AHA2 gene solely in BSCs. We tested an AHA inhibitor (vanadate) and stimulator (fusicoccin), and different pH buffers. We monitored their impact on the xylem sap pH and the leaf hydraulic conductance (Kleaf ), and the effect of pH on the water osmotic permeability (Pf ) of isolated BSCs protoplasts. We found that AHA2 is necessary for xylem sap acidification, and in turn, for elevating Kleaf . Conversely, AHA2 knockdown, which alkalinized the xylem sap, or, buffering its pH to 7.5, reduced Kleaf , and elevating external pH to 7.5 decreased the BSCs Pf . All these showed a causative link between AHA2 activity in BSCs and leaf radial hydraulic water conductance.
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Affiliation(s)
- Yael Grunwald
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel
| | - Noa Wigoda
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel
| | - Nir Sade
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel
- School of Plant Sciences and Food Security, The George S. Wise Faculty of Life Sciences at Tel-Aviv University, Tel Aviv, 6997801, Israel
| | - Adi Yaaran
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel
| | - Tanmayee Torne
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel
| | - Sanbon Chaka Gosa
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel
| | - Nava Moran
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel
| | - Menachem Moshelion
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel
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6
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Vardi A, Pri-Or A, Wigoda N, Grishchuk Y, Futerman AH. Proteomics analysis of a human brain sample from a mucolipidosis type IV patient reveals pathophysiological pathways. Orphanet J Rare Dis 2021; 16:39. [PMID: 33478506 PMCID: PMC7818904 DOI: 10.1186/s13023-021-01679-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/06/2021] [Indexed: 12/29/2022] Open
Abstract
Background Mucolipidosis type IV (MLIV), an ultra-rare neurodevelopmental and neurodegenerative disorder, is caused by mutations in the MCOLN1 gene, which encodes the late endosomal/lysosomal transient receptor potential channel TRPML1 (mucolipin 1). The precise pathophysiogical pathways that cause neurological disease in MLIV are poorly understood. Recently, the first post-mortem brain sample became available from a single MLIV patient, and in the current study we performed mass spectrometry (MS)-based proteomics on this tissue with a view to delineating pathological pathways, and to compare with previously-published data on MLIV, including studies using the Mcoln1−/− mouse. Results A number of pathways were altered in two brain regions from the MLIV patient, including those related to the lysosome, lipid metabolism, myelination, cellular trafficking and autophagy, mTOR and calmodulin, the complement system and interferon signaling. Of these, levels of some proteins not known previously to be associated with MLIV were altered, including APOD, PLIN4, ATG and proteins related to interferon signaling. Moreover, when proteins detected by proteomics in the human brain were compared with their orthologs detected in the Mcoln1−/− mouse by RNAseq, the results were remarkably similar. Finally, analysis of proteins in human and mouse CSF suggest that calbindin 1 and calbindin 2 might be useful as biomarkers to help chart the course of disease development. Conclusions Despite the sample size limitations, our findings are consistent with the relatively general changes in lysosomal function previously reported in MLIV, and shed light on new pathways of disease pathophysiology, which is required in order to understand the course of disease development and to determine the efficacy of therapies when they become available for this devastating disease.
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Affiliation(s)
- Ayelet Vardi
- Department of Biomolecular Sciences, Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Amir Pri-Or
- The Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Noa Wigoda
- The Life Sciences Core Facilities, Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Yulia Grishchuk
- Center for Genomic Medicine and Department of Neurology, Massachusetts General Hospital Research Institute, Harvard Medical School, 185 Cambridge St., Boston, MA, 02114, USA
| | - Anthony H Futerman
- Department of Biomolecular Sciences, Weizmann Institute of Science, 76100, Rehovot, Israel.
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7
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Pewzner-Jung Y, Joseph T, Blumenreich S, Vardi A, Ferreira NS, Cho SM, Eilam R, Tsoory M, Biton IE, Brumfeld V, Haffner-Krausz R, Brenner O, Sharabi N, Addadi Y, Salame TM, Rotkopf R, Wigoda N, Yayon N, Merrill AH, Schiffmann R, Futerman AH. Brain pathology and cerebellar purkinje cell loss in a mouse model of chronic neuronopathic Gaucher disease. Prog Neurobiol 2020; 197:101939. [PMID: 33152398 DOI: 10.1016/j.pneurobio.2020.101939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 10/03/2020] [Accepted: 10/25/2020] [Indexed: 12/12/2022]
Abstract
Gaucher disease (GD) is currently the focus of considerable attention due primarily to the association between the gene that causes GD (GBA) and Parkinson's disease. Mouse models exist for the systemic (type 1) and for the acute neuronopathic forms (type 2) of GD. Here we report the generation of a mouse that phenotypically models chronic neuronopathic type 3 GD. Gba-/-;Gbatg mice, which contain a Gba transgene regulated by doxycycline, accumulate moderate levels of the offending substrate in GD, glucosylceramide, and live for up to 10 months, i.e. significantly longer than mice which model type 2 GD. Gba-/-;Gbatg mice display behavioral abnormalities at ∼4 months, which deteriorate with age, along with significant neuropathology including loss of Purkinje neurons. Gene expression is altered in the brain and in isolated microglia, although the changes in gene expression are less extensive than in mice modeling type 2 disease. Finally, bone deformities are consistent with the Gba-/-;Gbatg mice being a genuine type 3 GD model. Together, the Gba-/-;Gbatg mice share pathological pathways with acute neuronopathic GD mice but also display differences that might help understand the distinct disease course and progression of type 2 and 3 patients.
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Affiliation(s)
- Yael Pewzner-Jung
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel.
| | - Tammar Joseph
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Shani Blumenreich
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Ayelet Vardi
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | | | - Soo Min Cho
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Raya Eilam
- Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Michael Tsoory
- Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Inbal E Biton
- Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Vlad Brumfeld
- Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | | | - Ori Brenner
- Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Nir Sharabi
- Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Yoseph Addadi
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Tomer-Meir Salame
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Ron Rotkopf
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Noa Wigoda
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Nadav Yayon
- Department of Biological Chemistry, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Alfred H Merrill
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA
| | | | - Anthony H Futerman
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
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8
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Shreberk-Shaked M, Dassa B, Di Agostino S, Nuriel Y, Wigoda N, Rotkopf R, Blandino G, Aylon Y, Oren M. Abstract B43: Division of labor between YAP and TAZ in lung cancer. Mol Cancer Res 2020. [DOI: 10.1158/1557-3125.hippo19-b43] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Paralogs originating from a gene duplication event can diverge and accumulate changes that contribute to a division of labor. Therefore, we wished to explore differential activities of YAP and TAZ. Traditionally, research has tended to consider YAP and TAZ as functionally redundant transcriptional cofactors, with similar biologic impact. However, there is growing evidence that each of them possesses distinct attributes. Hence, it is of great interest to find out whether YAP and TAZ have nonredundant involvement in cancer. Lung cancer is the leading cause of cancer-related deaths worldwide. Despite significant progress, the 5-year survival is still lower than 15%. Therefore, there is an urgent need for novel lung cancer biomarkers. Recent evidence suggests that YAP/TAZ play important roles in lung tumorigenesis. We explored differences in the transcriptional programs regulated by YAP and TAZ in lung adenocarcinoma cells, and the physiologic implications of such differences. Towards this aim, we performed RNA-sequencing in lung cancer cells following knockdown of either YAP or TAZ. Our analysis revealed a broad spectrum of expression patterns, including genes that are regulated preferentially by either YAP, TAZ, or both. Interestingly, a group of genes related to extracellular matrix remodeling was substantially regulated by TAZ but not YAP, while cell cycle- and proliferation-related genes were affected mainly by YAP but not TAZ. These differences in gene regulation correlated with functional differences between YAP and TAZ. Knockdown of TAZ strongly affected cell migration, whereas depletion of YAP had only mild effects on migration. Conversely, YAP silencing resulted in reduced proliferation compared to TAZ silencing. Importantly, YAP- and TAZ-dependent transcriptomes were correlated to lung cancer patient survival. In summary, our findings suggest that YAP and TAZ have distinct but complementary roles, which are associated with different cancer features. Hopefully, the identification of different activities and downstream effects of YAP and TAZ may enable more refined stratification of lung cancers and provide clues for the development of more effective targeted therapies.
Citation Format: Michal Shreberk-Shaked, Bareket Dassa, Silvia Di Agostino, Yarden Nuriel, Noa Wigoda, Ron Rotkopf, Giovanni Blandino, Yael Aylon, Moshe Oren. Division of labor between YAP and TAZ in lung cancer [abstract]. In: Proceedings of the AACR Special Conference on the Hippo Pathway: Signaling, Cancer, and Beyond; 2019 May 8-11; San Diego, CA. Philadelphia (PA): AACR; Mol Cancer Res 2020;18(8_Suppl):Abstract nr B43.
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Affiliation(s)
| | | | | | | | - Noa Wigoda
- 1Weizmann Institute of Science, Rehovot, Israel,
| | - Ron Rotkopf
- 1Weizmann Institute of Science, Rehovot, Israel,
| | | | - Yael Aylon
- 1Weizmann Institute of Science, Rehovot, Israel,
| | - Moshe Oren
- 1Weizmann Institute of Science, Rehovot, Israel,
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9
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Abstract
To unveil novel global changes associated with corpus luteum (CL) maturation, we analyzed transcriptome data for the bovine CL on days 4 and 11, representing the developing vs. mature gland. Our analyses revealed 681 differentially expressed genes (363 and 318 on day 4 and 11, respectively), with ≥2 fold change and FDR of <5%. Different gene ontology (GO) categories were represented prominently in transcriptome data at these stages (e.g. days 4: cell cycle, chromosome, DNA metabolic process and replication and on day 11: immune response; lipid metabolic process and complement activation). Based on bioinformatic analyses, select genes expression in day 4 and 11 CL was validated with quantitative real-time PCR. Cell specific expression was also determined in enriched luteal endothelial and steroidogenic cells. Genes related to the angiogenic process such as NOS3, which maintains dilated vessels and MMP9, matrix degrading enzyme, were higher on day 4. Importantly, our data suggests day 11 CL acquire mechanisms to prevent blood vessel sprouting and promote their maturation by expressing NOTCH4 and JAG1, greatly enriched in luteal endothelial cells. Another endothelial specific gene, CD300LG, was identified here in the CL for the first time. CD300LG is an adhesion molecule enabling lymphocyte migration, its higher levels at mid cycle are expected to support the transmigration of immune cells into the CL at this stage. Together with steroidogenic genes, most of the genes regulating de-novo cholesterol biosynthetic pathway (e.g HMGCS, HMGCR) and cholesterol uptake from plasma (LDLR, APOD and APOE) were upregulated in the mature CL. These findings provide new insight of the processes involved in CL maturation including blood vessel growth and stabilization, leucocyte transmigration as well as progesterone synthesis as the CL matures.
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Affiliation(s)
- Sigal Kfir
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Raghavendra Basavaraja
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Noa Wigoda
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Shifra Ben-Dor
- Bioinformatics unit, Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Irit Orr
- Bioinformatics unit, Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Rina Meidan
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
- * E-mail:
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Shrestha K, Onasanya AE, Eisenberg I, Wigoda N, Yagel S, Yalu R, Meidan R, Imbar T. miR-210 and GPD1L regulate EDN2 in primary and immortalized human granulosa-lutein cells. Reproduction 2018; 155:197-205. [PMID: 29301980 DOI: 10.1530/rep-17-0574] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/22/2017] [Accepted: 12/04/2017] [Indexed: 11/08/2022]
Abstract
Endothelin-2 (EDN2), expressed at a narrow window during the periovulatory period, critically affects ovulation and corpus luteum (CL) formation. LH (acting mainly via cAMP) and hypoxia are implicated in CL formation; therefore, we aimed to elucidate how these signals regulate EDN2 using human primary (hGLCs) and immortalized (SVOG) granulosa-lutein cells. The hypoxiamiR, microRNA-210 (miR-210) was identified as a new essential player in EDN2 expression. Hypoxia (either mimetic compound-CoCl2, or low O2) elevated hypoxia-inducible factor 1A (HIF1A), miR-210 and EDN2 Hypoxia-induced miR-210 was suppressed in HIF1A-silenced SVOG cells, suggesting that miR-210 is HIF1A dependent. Elevated miR-210 levels in hypoxia or by miR-210 overexpression, increased EDN2 Conversely, miR-210 inhibition reduced EDN2 levels, even in the presence of CoCl2, indicating the importance of miR-210 in the hypoxic induction of EDN2 A molecule that destabilizes HIF1A protein, glycerol-3-phosphate dehydrogenase 1-like gene-GPD1L, was established as a miR-210 target in both cell types. It was decreased by miR-210-mimic and was increased by miR-inhibitor. Furthermore, reducing GPD1L by endogenously elevated miR-210 (in hypoxia), miR-210-mimic or by GPD1L siRNA resulted in elevated HIF1A protein and EDN2 levels, implying a vital role for GPD1L in the hypoxic induction of EDN2 Under normoxic conditions, forskolin (adenylyl cyclase activator) triggered changes typical of hypoxia. It elevated HIF1A, EDN2 and miR-210 while inhibiting GPD1L Furthermore, HIF1A silencing greatly reduced forskolin's ability to elevate EDN2 and miR-210. This study highlights the novel regulatory roles of miR-210 and its gene target, GPD1L, in hypoxia and cAMP-induced EDN2 by human granulosa-lutein cells.
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Affiliation(s)
- Ketan Shrestha
- Department of Animal SciencesThe Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Adepeju Esther Onasanya
- Department of Animal SciencesThe Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Iris Eisenberg
- The Magda and Richard Hoffman Center for Human Placenta ResearchHadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Noa Wigoda
- Department of Animal SciencesThe Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Simcha Yagel
- The Magda and Richard Hoffman Center for Human Placenta ResearchHadassah Hebrew University Medical Center, Jerusalem, Israel.,Department of Obstetrics and GynecologyHadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Ronit Yalu
- Department of Animal SciencesThe Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Rina Meidan
- Department of Animal SciencesThe Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Tal Imbar
- The Magda and Richard Hoffman Center for Human Placenta ResearchHadassah Hebrew University Medical Center, Jerusalem, Israel.,Department of Obstetrics and GynecologyHadassah Hebrew University Medical Center, Jerusalem, Israel
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Wigoda N, Pasmanik-Chor M, Yang T, Yu L, Moshelion M, Moran N. Differential gene expression and transport functionality in the bundle sheath versus mesophyll - a potential role in leaf mineral homeostasis. J Exp Bot 2017; 68:3179-3190. [PMID: 28407076 PMCID: PMC5853479 DOI: 10.1093/jxb/erx067] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 02/09/2017] [Indexed: 05/08/2023]
Abstract
Under fluctuating ambient conditions, the ability of plants to maintain hydromineral homeostasis requires the tight control of long distance transport. This includes the control of radial transport within leaves, from veins to mesophyll. The bundle sheath is a structure that tightly wraps around leaf vasculature. It has been suggested to act as a selective barrier in the context of radial transport. This suggestion is based on recent physiological transport assays of bundle sheath cells (BSCs), as well as the anatomy of these cells.We hypothesized that the unique transport functionality of BSCs is apparent in their transcriptome. To test this, we compared the transcriptomes of individually hand-picked protoplasts of GFP-labeled BSCs and non-labeled mesophyll cells (MCs) from the leaves of Arabidopsis thaliana. Of the 90 genes differentially expressed between BSCs and MCs, 45% are membrane related and 20% transport related, a prominent example being the proton pump AHA2. Electrophysiological assays showed that the major AKT2-like membrane K+ conductances of BSCs and MCs had different voltage dependency ranges. Taken together, these differences may cause simultaneous but oppositely directed transmembrane K+ fluxes in BSCs and MCs, in otherwise similar conditions.
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Affiliation(s)
- Noa Wigoda
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | | | - Tianyuan Yang
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, P.R. China
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P.R. China
| | - Ling Yu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, P.R. China
| | - Menachem Moshelion
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Nava Moran
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
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Ma X, Shatil-Cohen A, Ben-Dor S, Wigoda N, Perera IY, Im YJ, Diminshtein S, Yu L, Boss WF, Moshelion M, Moran N. Do phosphoinositides regulate membrane water permeability of tobacco protoplasts by enhancing the aquaporin pathway? Planta 2015; 241:741-55. [PMID: 25486887 DOI: 10.1007/s00425-014-2216-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 11/25/2014] [Indexed: 05/07/2023]
Abstract
MAIN CONCLUSION Enhancing the membrane content of PtdInsP 2 , the already-recognized protein-regulating lipid, increased the osmotic water permeability of tobacco protoplasts, apparently by increasing the abundance of active aquaporins in their membranes. While phosphoinositides are implicated in cell volume changes and are known to regulate some ion channels, their modulation of aquaporins activity has not yet been reported for any organism. To examine this, we compared the osmotic water permeability (P f) of protoplasts isolated from tobacco (Nicotiana tabacum) cultured cells (NT1) with different (genetically lowered or elevated relative to controls) levels of inositol trisphosphate (InsP3) and phosphatidyl inositol [4,5] bisphosphate (PtdInsP2). To achieve this, the cells were transformed with, respectively, the human InsP3 5-phosphatase ('Ptase cells') or human phosphatidylinositol (4) phosphate 5-kinase ('PIPK cells'). The mean P f of the PIPK cells was several-fold higher relative to that of controls and Ptase cells. Three results favor aquaporins over the membrane matrix as underlying this excessive P f: (1) transient expression of the maize aquaporin ZmPIP2;4 in the PIPK cells increased P f by 12-30 μm s(-1), while in the controls only by 3-4 μm s(-1). (2) Cytosol acidification-known to inhibit aquaporins-lowered the P f in the PIPK cells down to control levels. (3) The transcript of at least one aquaporin was elevated in the PIPK cells. Together, the three results demonstrate the differences between the PIPK cells and their controls, and suggest a hitherto unobserved regulation of aquaporins by phosphoinositides, which could occur through direct interaction or indirect phosphoinositides-dependent cellular effects.
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Affiliation(s)
- Xiaohong Ma
- The Robert H. Smith Faculty of Agriculture Food and Environment, The Robert H. Smith Institute for Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, 76100, Rehovot, Israel
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Wigoda N, Moshelion M, Moran N. Is the leaf bundle sheath a "smart flux valve" for K+ nutrition? J Plant Physiol 2014; 171:715-722. [PMID: 24629888 DOI: 10.1016/j.jplph.2013.12.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 12/20/2013] [Accepted: 12/23/2013] [Indexed: 06/03/2023]
Abstract
Evidence has started to accumulate that the bundle sheath regulates the passage of water, minerals and metabolites between the mesophyll and the conducting vessels of xylem and phloem within the leaf veins which it envelops. Although potassium (K(+)) nutrition has been studied for several decades, and much is known about the uptake and recirculation of K(+) within the plant, the potential regulatory role of bundle sheath with regard to K(+) fluxes has just begun to be addressed. Here we have collected some facts and ideas about these processes.
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Affiliation(s)
- Noa Wigoda
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Menachem Moshelion
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Nava Moran
- The R.H. Smith Institute of Plant Sciences and Genetics in Agriculture, The R.H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel.
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Wigoda N, Ben-Nissan G, Granot D, Schwartz A, Weiss D. The gibberellin-induced, cysteine-rich protein GIP2 from Petunia hybrida exhibits in planta antioxidant activity. Plant J 2006; 48:796-805. [PMID: 17076804 DOI: 10.1111/j.1365-313x.2006.02917.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Numerous GAST-like genes have been identified in various plant species. All code for small proteins with a conserved C-terminal region in which 12 cysteines are located in exactly the same positions. We have previously identified five gibberellin (GA)-induced GAST1-like genes in petunia, GIP1-5. GIP2 is expressed in elongating zones, and its suppression in transgenic petunia plants inhibits stem elongation, suggesting a role for the protein in GA-induced cell growth. However, nothing is known about the biochemical activity of GIP2 or any other GAST-like protein. As all contain putative catalytic disulfide bonds (putative redox-active cysteines), we speculated that they might be involved in redox regulation. Expression analysis of GIP2, GIP4 and GIP5 revealed that they are induced by H(2)O(2). To study whether GIP2 modulates H(2)O(2) levels, we generated transgenic petunia plants expressing GIP2 under the regulation of the ubiquitous CaMV 35S promoter. The transgene reduced H(2)O(2) levels in leaves following wounding. It also reduced the levels of H(2)O(2) in guard cells following osmotic stress and ABA treatments, leading to the suppression of stomatal closure. In addition, the transgene promoted stem and corolla elongation. As reactive oxygen species (ROS) are involved in cell elongation, we suggest that GIP2 affects growth by regulating the levels of ROS. As all known GAST-like proteins contain putative redox-active cysteines, they may all act as antioxidants.
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Affiliation(s)
- Noa Wigoda
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, PO Box 12, Rehovot 76100, Israel
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