1
|
Yanowski E, Yacovzada NS, David E, Giladi A, Jaitin D, Farack L, Egozi A, Ben-Zvi D, Itzkovitz S, Amit I, Hornstein E. Physically interacting beta-delta pairs in the regenerating pancreas revealed by single-cell sequencing. Mol Metab 2022; 60:101467. [PMID: 35240340 PMCID: PMC8983436 DOI: 10.1016/j.molmet.2022.101467] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 02/05/2022] [Accepted: 02/25/2022] [Indexed: 11/12/2022] Open
Abstract
Objectives Until recently, communication between neighboring cells in islets of Langerhans was overlooked by genomic technologies, which require rigorous tissue dissociation into single cells. Methods We utilize sorting of physically interacting cells (PICs) with single-cell RNA-sequencing to systematically map cellular interactions in the endocrine pancreas after pancreatectomy. Results The pancreas cellular landscape features pancreatectomy associated heterogeneity of beta-cells, including an interaction-specific program between paired beta and delta-cells. Conclusions Our analysis suggests that the particular cluster of beta-cells that pairs with delta-cells benefits from stress protection, implying that the interaction between beta- and delta-cells might safeguard against pancreatectomy associated challenges. The work encourages testing the potential relevance of physically-interacting beta-delta-cells also in diabetes mellitus. Single-cell RNA-sequencing systematically maps physically interacting endocrine cells in the pancreas. The landscape of pancreatectomy associated beta-cell heterogeneity is mapped in a single cell resolution. Interaction-specific beta - delta cellular program safeguards beta cells against pancreatectomy-associated stress. Physically interacting beta delta pairs were discovered in an injury model and may also be relevant in diabetes.
Collapse
Affiliation(s)
- Eran Yanowski
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Molecular neuroscience, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Nancy-Sarah Yacovzada
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Molecular neuroscience, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Eyal David
- Department of Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Amir Giladi
- Department of Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Diego Jaitin
- Department of Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Lydia Farack
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Adi Egozi
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Danny Ben-Zvi
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, The Hebrew University-Hadassah Medical School, Jerusalem, 9112102, Israel
| | - Shalev Itzkovitz
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ido Amit
- Department of Immunology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Eran Hornstein
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Molecular neuroscience, Weizmann Institute of Science, Rehovot 7610001, Israel.
| |
Collapse
|
2
|
Meir Z, Aviezer I, Chongloi GL, Ben-Kiki O, Bronstein R, Mukamel Z, Keren-Shaul H, Jaitin D, Tal L, Shalev-Schlosser G, Harel TH, Tanay A, Eshed Y. Dissection of floral transition by single-meristem transcriptomes at high temporal resolution. Nat Plants 2021; 7:800-813. [PMID: 34135484 DOI: 10.1038/s41477-021-00936-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 04/30/2021] [Indexed: 05/21/2023]
Abstract
The vegetative-to-floral transition is a dramatic developmental change of the shoot apical meristem, promoted by the systemic florigen signal. However, poor molecular temporal resolution of this dynamic process has precluded characterization of how meristems respond to florigen induction. Here, we develop a technology that allows sensitive transcriptional profiling of individual shoot apical meristems. Computational ordering of hundreds of tomato samples reconstructed the floral transition process at fine temporal resolution and uncovered novel short-lived gene expression programs that are activated before flowering. These programs are annulled only when both florigen and a parallel signalling pathway are eliminated. Functional screening identified genes acting at the onset of pre-flowering programs that are involved in the regulation of meristem morphogenetic changes but dispensable for the timing of floral transition. Induced expression of these short-lived transition-state genes allowed us to determine their genetic hierarchies and to bypass the need for the main flowering pathways. Our findings illuminate how systemic and autonomous pathways are integrated to control a critical developmental switch.
Collapse
Affiliation(s)
- Zohar Meir
- Faculty of Mathematics and Computer Science and Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Iris Aviezer
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | | | - Oren Ben-Kiki
- Faculty of Mathematics and Computer Science and Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Revital Bronstein
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Zohar Mukamel
- Faculty of Mathematics and Computer Science and Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Hadas Keren-Shaul
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Diego Jaitin
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Lior Tal
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Gili Shalev-Schlosser
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Tom Hai Harel
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Amos Tanay
- Faculty of Mathematics and Computer Science and Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel.
| | - Yuval Eshed
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel.
| |
Collapse
|
3
|
Curato C, Bernshtein B, Zupancič E, Dufner A, Jaitin D, Giladi A, David E, Chappell-Maor L, Leshkowitz D, Knobeloch KP, Amit I, Florindo HF, Jung S. DC Respond to Cognate T Cell Interaction in the Antigen-Challenged Lymph Node. Front Immunol 2019; 10:863. [PMID: 31073301 PMCID: PMC6496461 DOI: 10.3389/fimmu.2019.00863] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/04/2019] [Indexed: 01/11/2023] Open
Abstract
Dendritic cells (DC) are unrivaled in their potential to prime naive T cells by presenting antigen and providing costimulation. DC are furthermore believed to decode antigen context by virtue of pattern recognition receptors and to polarize T cells through cytokine secretion toward distinct effector functions. Diverse polarized T helper (TH) cells have been explored in great detail. In contrast, studies of instructing DC have to date largely been restricted to in vitro settings or adoptively transferred DC. Here we report efforts to unravel the DC response to cognate T cell encounter in antigen-challenged lymph nodes (LN). Mice engrafted with antigen-specific T cells were immunized with nanoparticles (NP) entrapping adjuvants and absorbed with antigen to study the immediate DC response to T cell encounter using bulk and single cell RNA-seq profiling. NP induced robust antigen-specific TH1 cell responses with minimal bystander activation. Fluorescent-labeled NP allowed identification of antigen-carrying DC and focus on transcriptional changes in DC that encounter T cells. Our results support the existence of a bi-directional crosstalk between DC and T cells that promotes TH1 responses, including involvement of the ubiquitin-like molecule Isg15 that merits further study.
Collapse
Affiliation(s)
- Caterina Curato
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Biana Bernshtein
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Eva Zupancič
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal
| | - Almut Dufner
- Medical Faculty, Institute for Neuropathology, University Freiburg, Freiburg, Germany
| | - Diego Jaitin
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Amir Giladi
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Eyal David
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | | | - Dena Leshkowitz
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Klaus-Peter Knobeloch
- Medical Faculty, Institute for Neuropathology, University Freiburg, Freiburg, Germany
| | - Ido Amit
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Helena F Florindo
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal
| | - Steffen Jung
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| |
Collapse
|
4
|
Giladi A, Paul F, Herzog Y, Lubling Y, Weiner A, Yofe I, Jaitin D, Cabezas-Wallscheid N, Dress R, Ginhoux F, Trumpp A, Tanay A, Amit I. Single-cell characterization of haematopoietic progenitors and their trajectories in homeostasis and perturbed haematopoiesis. Nat Cell Biol 2018; 20:836-846. [DOI: 10.1038/s41556-018-0121-4] [Citation(s) in RCA: 183] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/11/2018] [Indexed: 02/06/2023]
|
5
|
Golias T, Papandreou I, Sun R, Kumar B, Brown NV, Swanson BJ, Pai R, Jaitin D, Le QT, Teknos TN, Denko NC. Hypoxic repression of pyruvate dehydrogenase activity is necessary for metabolic reprogramming and growth of model tumours. Sci Rep 2016; 6:31146. [PMID: 27498883 PMCID: PMC4976358 DOI: 10.1038/srep31146] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [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: 05/13/2016] [Accepted: 07/12/2016] [Indexed: 12/25/2022] Open
Abstract
Tumour cells fulfil the bioenergetic and biosynthetic needs of proliferation using the available environmental metabolites. Metabolic adaptation to hypoxia causes decreased mitochondrial function and increased lactate production. This work examines the biological importance of the hypoxia-inducible inhibitory phosphorylations on the pyruvate dehydrogenase E1α subunit. Pancreatic cancer cell lines were genetically manipulated to alter the net phosphorylation of PDH E1α through reduced kinase expression or enhanced phosphatase expression. The modified cells were tested for hypoxic changes in phosphorylated E1α, mitochondrial metabolism and growth as xenografted tumours. Even though there are four PDHK genes, PDHK1 is essential for inhibitory PDH phosphorylation of E1α at serine 232, is partially responsible for modification of serines 293 and 300, and these phosphorylations are necessary for model tumour growth. In order to determine the clinical relevance, a cohort of head and neck cancer patient biopsies was examined for phosphorylated E1α and expression of PDHK1. Patients with detectable 232 phosphorylation or expression of PDHK1 tend to have worse clinical outcome. These data show that PDHK1 activity is unique and non-redundant in the family of PHDK enzymes and a PDHK1 specific inhibitor would therefore have anti-cancer activity with reduced chance of side effects from inhibition of other PDHKs.
Collapse
Affiliation(s)
- Tereza Golias
- Institute of Virology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, 84505, Slovak Republic
| | - Ioanna Papandreou
- Department of Radiation Oncology, Ohio State University Comprehensive Cancer Center and Wexner Medical Center, Columbus OH 43210, USA
| | - Ramon Sun
- Department of Radiation Oncology, Ohio State University Comprehensive Cancer Center and Wexner Medical Center, Columbus OH 43210, USA
| | - Bhavna Kumar
- Department of Otolaryngology, Ohio State University Comprehensive Cancer Center and Wexner Medical Center, Columbus OH 43210, USA
| | - Nicole V Brown
- Department of Biomedical Informatics, Center for Biostatistics, Ohio State University Comprehensive Cancer Center and Wexner Medical Center, Columbus OH 43210, USA
| | - Benjamin J Swanson
- Department of Pathology, Ohio State University Comprehensive Cancer Center and Wexner Medical Center, Columbus OH 43210, USA
| | - Reetesh Pai
- Department of Pathology, University of Pittsburg, Pittsburg PA 15213, USA
| | - Diego Jaitin
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Quynh-Thu Le
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford CA 94305, USA
| | - Theodoros N Teknos
- Department of Otolaryngology, Ohio State University Comprehensive Cancer Center and Wexner Medical Center, Columbus OH 43210, USA
| | - Nicholas C Denko
- Department of Radiation Oncology, Ohio State University Comprehensive Cancer Center and Wexner Medical Center, Columbus OH 43210, USA
| |
Collapse
|
6
|
Vardi N, Levy S, Gurvich Y, Polacheck T, Carmi M, Jaitin D, Amit I, Barkai N. Sequential Feedback Induction Stabilizes the Phosphate Starvation Response in Budding Yeast. Cell Rep 2014; 9:1122-34. [DOI: 10.1016/j.celrep.2014.10.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 09/02/2014] [Accepted: 09/29/2014] [Indexed: 12/14/2022] Open
|
7
|
Jaitin D, Sayles L, Goliazova T, Denko N, Sweet-Cordero A. Abstract 1000: Oncogenic Kras inhibits mitochondrial metabolism by regulating the pyruvate dehydrogenase complex under conditions of nutrient stress. Cancer Res 2012. [DOI: 10.1158/1538-7445.am2012-1000] [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
Kras is one of the most frequently mutated oncogenes in human cancer. Previous studies have suggested a role for oncogenic Kras in regulating glucose metabolism, although the exact mechanism is unclear. By analyzing the transcriptional consequences of Kras mutation under conditions of nutrient stress, a direct role for oncogenic Kras in regulating oxidative phosphorylation was observed. Signaling downstream of Kras via the MEK/ERK pathway inhibits expression of PDP1, a mitochondrial phosphatase that regulates the pyruvate dehydrogenase complex (PDC). PDC is a key enzyme in the conversion of pyruvate into acetyl-CoA. Decreased expression of PDP1 induced by oncogenic Kras leads to increased phosphorylation and thereby inactivation of PDC. Therefore, oncogenic Kras represses mitochondrial function and oxygen consumption by maintaining PDC in an inactive state. This effect is not apparent under the high-glucose conditions in which cells are typically cultured. However, at glucose concentrations more closely reflective of what cells experience in vivo, the effect of oncogenic Kras signaling on PDP1 expression becomes readily apparent. This study demonstrates a novel role for oncogenic Kras in the regulation of mitochondrial metabolism. Further studies underway may clarify a role for this pathway as a target for therapeutic intervention in Kras-mutant tumors.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 1000. doi:1538-7445.AM2012-1000
Collapse
Affiliation(s)
- Diego Jaitin
- 1Stanford Univ. School of Medicine, Stanford, CA
| | | | | | | | | |
Collapse
|