1
|
Schwarzer A, Oliveira M, Kleppa MJ, Slattery SD, Anantha A, Cooper A, Hannink M, Schambach A, Dörrie A, Kotlyarov A, Gaestel M, Hembrough T, Levine J, Luther M, Stocum M, Stiles L, Weinstock DM, Liesa M, Kostura MJ. Targeting Aggressive B-cell Lymphomas through Pharmacological Activation of the Mitochondrial Protease OMA1. Mol Cancer Ther 2023; 22:1290-1303. [PMID: 37643767 PMCID: PMC10723637 DOI: 10.1158/1535-7163.mct-22-0718] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 07/02/2023] [Accepted: 08/25/2023] [Indexed: 08/31/2023]
Abstract
DLBCL are aggressive, rapidly proliferating tumors that critically depend on the ATF4-mediated integrated stress response (ISR) to adapt to stress caused by uncontrolled growth, such as hypoxia, amino acid deprivation, and accumulation of misfolded proteins. Here, we show that ISR hyperactivation is a targetable liability in DLBCL. We describe a novel class of compounds represented by BTM-3528 and BTM-3566, which activate the ISR through the mitochondrial protease OMA1. Treatment of tumor cells with compound leads to OMA1-dependent cleavage of DELE1 and OPA1, mitochondrial fragmentation, activation of the eIF2α-kinase HRI, cell growth arrest, and apoptosis. Activation of OMA1 by BTM-3528 and BTM-3566 is mechanistically distinct from inhibitors of mitochondrial electron transport, as the compounds induce OMA1 activity in the absence of acute changes in respiration. We further identify the mitochondrial protein FAM210B as a negative regulator of BTM-3528 and BTM-3566 activity. Overexpression of FAM210B prevents both OMA1 activation and apoptosis. Notably, FAM210B expression is nearly absent in healthy germinal center B-lymphocytes and in derived B-cell malignancies, revealing a fundamental molecular vulnerability which is targeted by BTM compounds. Both compounds induce rapid apoptosis across diverse DLBCL lines derived from activated B-cell, germinal center B-cell, and MYC-rearranged lymphomas. Once-daily oral dosing of BTM-3566 resulted in complete regression of xenografted human DLBCL SU-DHL-10 cells and complete regression in 6 of 9 DLBCL patient-derived xenografts. BTM-3566 represents a first-of-its kind approach of selectively hyperactivating the mitochondrial ISR for treating DLBCL.
Collapse
Affiliation(s)
- Adrian Schwarzer
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany
- Department of Hematology, Hemostaseology, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Matheus Oliveira
- Department of Medicine, Endocrinology, UCLA, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Marc-Jens Kleppa
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany
| | | | - Andy Anantha
- Bantam Pharmaceutical, Research Triangle Park, North Carolina
| | - Alan Cooper
- Bantam Pharmaceutical, Research Triangle Park, North Carolina
| | - Mark Hannink
- Biochemistry Department, Life Sciences Center and Ellis Fischel Cancer Center, University of Missouri, Columbia, Missouri
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany
| | - Anneke Dörrie
- Department of Cell Biochemistry, Hannover Medical School, Hannover, Germany
| | - Alexey Kotlyarov
- Department of Cell Biochemistry, Hannover Medical School, Hannover, Germany
| | - Matthias Gaestel
- Department of Cell Biochemistry, Hannover Medical School, Hannover, Germany
| | - Todd Hembrough
- Bantam Pharmaceutical, Research Triangle Park, North Carolina
| | - Jedd Levine
- Bantam Pharmaceutical, Research Triangle Park, North Carolina
| | - Michael Luther
- Bantam Pharmaceutical, Research Triangle Park, North Carolina
| | - Michael Stocum
- Bantam Pharmaceutical, Research Triangle Park, North Carolina
| | - Linsey Stiles
- Department of Medicine, Endocrinology, UCLA, David Geffen School of Medicine at UCLA, Los Angeles, California
| | | | - Marc Liesa
- Department of Medicine, Endocrinology, UCLA, David Geffen School of Medicine at UCLA, Los Angeles, California
- Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Barcelona, Catalonia, Spain
| | | |
Collapse
|
2
|
Weiss AC, Blank E, Bohnenpoll T, Kleppa MJ, Rivera-Reyes R, Taketo MM, Trowe MO, Kispert A. Permissive ureter specification by TBX18-mediated repression of metanephric gene expression. Development 2023; 150:297298. [PMID: 36960826 DOI: 10.1242/dev.201048] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 02/20/2023] [Indexed: 03/25/2023]
Abstract
The murine kidney and ureter develop in a regionalized fashion from the ureteric bud and its surrounding mesenchyme. Whereas the factors that establish the metanephric cell lineages have been well characterized, much less is known about the molecular cues that specify the ureter. Here, we have identified a crucial patterning function in this process for Tbx18, a T-box transcription factor gene specifically expressed in the mesenchymal primordium of the ureter. Using misexpression and loss-of-function mice combined with molecular profiling approaches, we show that Tbx18 is required and sufficient to repress metanephric mesenchymal gene programs. We identify Wt1 as a functional target of TBX18. Our work suggests that TBX18 acts as a permissive factor in ureter specification by generating a mesenchymal domain around the distal ureteric bud where SHH and BMP4 signaling can occur.
Collapse
Affiliation(s)
- Anna-Carina Weiss
- Institute of Molecular Biology, Hannover Medical School, 30625 Hannover, Germany
| | - Eva Blank
- Institute of Molecular Biology, Hannover Medical School, 30625 Hannover, Germany
| | - Tobias Bohnenpoll
- Institute of Molecular Biology, Hannover Medical School, 30625 Hannover, Germany
| | - Marc-Jens Kleppa
- Institute of Molecular Biology, Hannover Medical School, 30625 Hannover, Germany
| | | | - Makoto Mark Taketo
- Colon Cancer Program, Kyoto University Hospital-iACT, Graduate School of Medicine, Kyoto University, Yoshida-Honmachi, Sakyo, Kyoto 606-8501, Japan
| | - Mark-Oliver Trowe
- Institute of Molecular Biology, Hannover Medical School, 30625 Hannover, Germany
| | - Andreas Kispert
- Institute of Molecular Biology, Hannover Medical School, 30625 Hannover, Germany
| |
Collapse
|
3
|
Maetzig T, Lieske A, Dörpmund N, Rothe M, Kleppa MJ, Dziadek V, Hassan JJ, Dahlke J, Borchert D, Schambach A. Real-Time Characterization of Clonal Fate Decisions in Complex Leukemia Samples by Fluorescent Genetic Barcoding. Cells 2022; 11:cells11244045. [PMID: 36552809 PMCID: PMC9776743 DOI: 10.3390/cells11244045] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/07/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022] Open
Abstract
Clonal heterogeneity in acute myeloid leukemia (AML) forms the basis for treatment failure and relapse. Attempts to decipher clonal evolution and clonal competition primarily depend on deep sequencing approaches. However, this prevents the experimental confirmation of the identified disease-relevant traits on the same cell material. Here, we describe the development and application of a complex fluorescent genetic barcoding (cFGB) lentiviral vector system for the labeling and subsequent multiplex tracking of up to 48 viable AML clones by flow cytometry. This approach allowed the visualization of longitudinal changes in the in vitro growth behavior of multiplexed color-coded AML clones for up to 137 days. Functional studies of flow cytometry-enriched clones documented their stably inherited increase in competitiveness, despite the absence of growth-promoting mutations in exome sequencing data. Transplantation of aliquots of a color-coded AML cell mix into mice revealed the initial engraftment of similar clones and their subsequent differential distribution in the animals over time. Targeted RNA-sequencing of paired pre-malignant and de novo expanded clones linked gene sets associated with Myc-targets, embryonic stem cells, and RAS signaling to the foundation of clonal expansion. These results demonstrate the potency of cFGB-mediated clonal tracking for the deconvolution of verifiable driver-mechanisms underlying clonal selection in leukemia.
Collapse
Affiliation(s)
- Tobias Maetzig
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
- Department of Pediatric Hematology and Oncology, Hannover Medical School, 30625 Hannover, Germany
- Correspondence: ; Tel.: +49-511-532-7808
| | - Anna Lieske
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
- Department of Pediatric Hematology and Oncology, Hannover Medical School, 30625 Hannover, Germany
| | - Nicole Dörpmund
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
- Department of Pediatric Hematology and Oncology, Hannover Medical School, 30625 Hannover, Germany
| | - Michael Rothe
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
| | - Marc-Jens Kleppa
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
| | - Violetta Dziadek
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
| | - Jacob Jalil Hassan
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
| | - Julia Dahlke
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
| | - Dorit Borchert
- Department of Pediatric Hematology and Oncology, Hannover Medical School, 30625 Hannover, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
- Division of Hematology/Oncology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| |
Collapse
|
4
|
Schwarzer A, Oliveira M, Kleppa MJ, Anantha A, Cooper A, Hannink M, Hembrough T, Levine J, Luther M, Stocum M, Stiles L, Liesa-Roig M, Kostura M. Abstract A07: BTM 3566, a novel activator of the mitochondrial stress response promotes robust therapeutic responses in vitro and in vivo in diffuse large B-cell lymphoma. Blood Cancer Discov 2022. [DOI: 10.1158/2643-3249.lymphoma22-a07] [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] Open
Abstract
Abstract
Relapsed/refractory diffuse large B-cell lymphomas (r/r-DLBCL) are a therapeutic challenge as they are highly heterogeneous both clinically and molecularly, which imposes a pressing need to develop novel therapies to improve outcomes in patients independently of the molecular subtype. We describe here BTM-3566, a first-in-class, orally active compound with activity against DLBCL. BTM-3566 induces apoptosis and complete cell killing in DLBCL lines a with an IC50 of ~200 – 500 nM. Responsive DLBCL cell lines include ABC, GCB, and double-hit and triple-hit lymphoma type. Pharmacokinetic studies in mice showed suitability for once daily dosing, with > 50% oral bioavailability and ~6 hours of serum half-life. In xenograft models using the double-hit DLBCL line SU-DHL-10, BTM-3566 treatment resulted in complete response in all tumor-bearing animals and durable remission in 50% of animals with no tumor growth occurring for 2 weeks after dose cessation. Expansion studies into human DLBCL PDX models harboring a range of high-risk genomic alterations demonstrated response in 100% of the lines with complete response in 6 of 9 PDX models tested. Dose scheduling studies indicate that 7 days of continuous dosing is sufficient to induce tumor regression and maintenance of a complete response. The therapeutic activity of BTM-3566 is related to a novel effect on mitochondrial proteostasis and a robust induction of the ATF4 ISR. Of the four eIF2α -kinases in the human genome we determined that HRI was uniquely required for BTM-3566 activity in DLBCL. HRI is activated by mitochondrial-related stress resulting in activation of the mitochondrial protease OMA1. Molecular analysis revealed that BTM-3566 activates OMA1, leading to induction of the ATF4 ISR pathway and apoptosis in DLBCL cell lines. Deletion of OMA1 reduces the ability of BTM-3566’s to induce apoptosis in DBLCL. Substrates of OMA1 include the dynamin OPA1 and DELE1, a protein recently shown to signal mitochondrial dysfunction through activation of HRI kinase and ATF4. Transfection of BJAB cells with a cleavage resistant OPA1 mutant has no effect on BTM-3566 induced apoptosis. In contrast, DELE1 KO suppresses BTM-3566 mediated apoptosis. BTM-3566 activates OMA1 without acting as a classical mitochondrial toxin. Instead, BTM-3566 induces OMA1 activity through a novel mechanism regulated by the mitochondrial protein FAM210B. FAM210B expression is negatively correlated with response to BTM-3566, and overexpression of FAM210B blocks OMA1 activation and causes complete resistance to BTM-3566 induced apoptosis. Taken together, these data support a novel antitumor mechanism in DLBCL, where BTM3566 induces mitochondrial stress, activating the OMA1-DELE1-HRI-eIF2a-ATF4 pathway leading to apoptosis and tumor regression. An Investigational New Drug application for BTM3566 in B-cell malignancies will be submitted in Q2 2022 with initiation of first in human clinical trials planned for fall 2022.
Citation Format: Adrian Schwarzer, Matheus Oliveira, Marc-Jens Kleppa, Andy Anantha, Alan Cooper, Mark Hannink, Todd Hembrough, Jedd Levine, Michael Luther, Michael Stocum, Linsey Stiles, Marc Liesa-Roig, Matthew Kostura. BTM 3566, a novel activator of the mitochondrial stress response promotes robust therapeutic responses in vitro and in vivo in diffuse large B-cell lymphoma [abstract]. In: Proceedings of the Third AACR International Meeting: Advances in Malignant Lymphoma: Maximizing the Basic-Translational Interface for Clinical Application; 2022 Jun 23-26; Boston, MA. Philadelphia (PA): AACR; Blood Cancer Discov 2022;3(5_Suppl):Abstract nr A07.
Collapse
Affiliation(s)
| | | | | | - Andy Anantha
- 3Bantam Pharmaceutical, Research Triangle Park, NC,
| | - Alan Cooper
- 3Bantam Pharmaceutical, Research Triangle Park, NC,
| | | | | | - Jedd Levine
- 3Bantam Pharmaceutical, Research Triangle Park, NC,
| | | | | | | | - Marc Liesa-Roig
- 6Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Barcelona, Catalonia, Spain
| | | |
Collapse
|
5
|
Schwarzer A, Oliveira M, Kleppa MJ, Anantha A, Cooper A, Hembrough T, Levine J, Luther M, Stocum M, Liesa-Roig M, Kostura M. Abstract 3784: BTM-3655 co-opts mitochondrial quality control pathways to induce apoptosis, and complete tumor regression in DLBCL cell lines, xenografts and PDX models. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-3784] [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
Cellular integrated stress response (ISR) pathways are induced by multiple triggers - viral RNA, nutrient deprivation, protein misfolding and disruption of mitochondrial homeostasis -that lead to phosphorylation of eIF2α, blockade of translation and activation of transcription factor ATF4 allowing the cell to recover or become apoptotic. These pathways are emerging as important targets in oncology, and here we demonstrate that mitochondrial homeostatic pathways can be co-opted to induce apoptosis in tumor cells and complete tumor regression in xenograft and PDX models. Diffuse large B-cell lymphoma (DLBCL) is a highly heterogeneous tumor, for which novel therapies are needed. We recently described BTM-3566, a small molecule which induces apoptosis in DLBCL cell lines, including double- and triple-hit subtypes. In xenograft models BTM-3566 induces complete and durable regression in all tumor-bearing animals, importantly, no regrowth is seen through 21 days post therapy. In an expanded panel of high-risk human DLBCL PDX models BTM-3566 demonstrated a 100% response rate, and complete tumor regression in 6 of 8 PDX models. Molecular analysis revealed that BTM-3566 activates the mitochondrial protease OMA1, leading to activation of HRI kinase, phosphorylation of the eIF2a -ATF4 pathway and apoptosis in DLBCL cell lines. CRISPR-Cas9 depletion of OMA1 eliminates BTM-3566’s apoptotic activity. Substrates of OMA1 include dynamin, OPA1 and DELE1, a protein of unknown function but which has recently been shown to act as a sensor for mitochondrial dysfunction and signals through HRI kinase and ATF4. Transfection of BJAB cells with a cleavage resistant OPA1 mutant has no effect on BTM-3566 induced apoptosis. In contrast, KO of DELE1 suppresses BTM-3566 mediated apoptosis. Interestingly, knockout of the ATF4 gene has a partial effect, delaying onset of apoptosis. BTM-3566 activates OMA1 in a manner unrelated to changes in mitochondrial ATP synthesis, reactive oxygen species generation or electron transport chain inhibition. Instead, BTM-3566 induces OMA1 activity through a novel mechanism regulated by the mitochondrial protein FAM210B. FAM210B expression is negatively correlated with response to BTM-3566, and overexpression of FAM210B blocks OMA1 activation and causes complete resistance to BTM-3566 induced apoptosis. Thus, FAM210B expression is a strong predictor of sensitivity to BTM-3566 and reveals a novel mechanism of regulation of OMA1 activation. Taken together, these data support a novel antitumor mechanism in DLBCL, where BTM3566 induces mitochondrial stress, activating the OMA1-DELE1-HRI-eIF2a-ATF4 pathway leading to apoptosis and tumor regression. An Investigational New Drug application for BTM3566 in B-cell malignancies will be submitted by early Q1 2022 with initiation of first in human clinical trials the first half of 2022.
Citation Format: Adrian Schwarzer, Matheus Oliveira, Marc-Jens Kleppa, Andy Anantha, Alan Cooper, Todd Hembrough, Jedd Levine, Michael Luther, Michael Stocum, Marc Liesa-Roig, Matt Kostura. BTM-3655 co-opts mitochondrial quality control pathways to induce apoptosis, and complete tumor regression in DLBCL cell lines, xenografts and PDX models [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 3784.
Collapse
|
6
|
Baron Y, Sens J, Lange L, Nassauer L, Klatt D, Hoffmann D, Kleppa MJ, Barbosa PV, Keisker M, Steinberg V, Suerth JD, Vondran FWR, Meyer J, Morgan M, Schambach A, Galla M. Improved alpharetrovirus-based Gag.MS2 particles for efficient and transient delivery of CRISPR-Cas9 into target cells. Mol Ther Nucleic Acids 2022; 27:810-823. [PMID: 35141043 PMCID: PMC8801357 DOI: 10.1016/j.omtn.2021.12.033] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 12/29/2021] [Indexed: 12/12/2022]
Abstract
DNA-modifying technologies, such as the CRISPR-Cas9 system, are promising tools in the field of gene and cell therapies. However, high and prolonged expression of DNA-modifying enzymes may cause cytotoxic and genotoxic side effects and is therefore unwanted in therapeutic approaches. Consequently, development of new and potent short-term delivery methods is of utmost importance. Recently, we developed non-integrating gammaretrovirus- and MS2 bacteriophage-based Gag.MS2 (g.Gag.MS2) particles for transient transfer of non-retroviral CRISPR-Cas9 RNA into target cells. In the present study, we further improved the technique by transferring the system to the alpharetroviral vector platform (a.Gag.MS2), which significantly increased CRISPR-Cas9 delivery into target cells and allowed efficient targeted knockout of endogenous TP53/Trp53 genes in primary murine fibroblasts as well as primary human fibroblasts, hepatocytes, and cord-blood-derived CD34+ stem and progenitor cells. Strikingly, co-packaging of Cas9 mRNA and multiple single guide RNAs (sgRNAs) into a.Gag.MS2 chimera displayed efficient targeted knockout of up to three genes. Co-transfection of single-stranded DNA donor oligonucleotides during CRISPR-Cas9 particle production generated all-in-one particles, which mediated up to 12.5% of homology-directed repair in primary cell cultures. In summary, optimized a.Gag.MS2 particles represent a versatile tool for short-term delivery of DNA-modifying enzymes into a variety of target cells, including primary murine and human cells.
Collapse
Affiliation(s)
- Yvonne Baron
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Johanna Sens
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Lucas Lange
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Larissa Nassauer
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Denise Klatt
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Dirk Hoffmann
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Marc-Jens Kleppa
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Philippe Vollmer Barbosa
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany.,Fraunhofer Institute for Toxicology and Experimental Medicine, Hannover 30625, Germany
| | - Maximilian Keisker
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Viviane Steinberg
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Julia D Suerth
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Florian W R Vondran
- ReMediES, Department of General, Visceral and Transplant Surgery, Hannover Medical School, Hannover 30625, Germany.,German Centre for Infection Research (DZIF), partner site Hannover-Braunschweig, Hannover Medical School, Hannover 30625, Germany
| | - Johann Meyer
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Michael Morgan
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany.,Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Melanie Galla
- Institute of Experimental Hematology, Hannover Medical School, Hannover 30625, Germany
| |
Collapse
|
7
|
Hassan JJ, Lieske A, Dörpmund N, Klatt D, Hoffmann D, Kleppa MJ, Kustikova OS, Stahlhut M, Schwarzer A, Schambach A, Maetzig T. A Multiplex CRISPR-Screen Identifies PLA2G4A as Prognostic Marker and Druggable Target for HOXA9 and MEIS1 Dependent AML. Int J Mol Sci 2021; 22:ijms22179411. [PMID: 34502319 PMCID: PMC8431012 DOI: 10.3390/ijms22179411] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 12/03/2022] Open
Abstract
HOXA9 and MEIS1 are frequently upregulated in acute myeloid leukemia (AML), including those with MLL-rearrangement. Because of their pivotal role in hemostasis, HOXA9 and MEIS1 appear non-druggable. We, thus, interrogated gene expression data of pre-leukemic (overexpressing Hoxa9) and leukemogenic (overexpressing Hoxa9 and Meis1; H9M) murine cell lines to identify cancer vulnerabilities. Through gene expression analysis and gene set enrichment analyses, we compiled a list of 15 candidates for functional validation. Using a novel lentiviral multiplexing approach, we selected and tested highly active sgRNAs to knockout candidate genes by CRISPR/Cas9, and subsequently identified a H9M cell growth dependency on the cytosolic phospholipase A2 (PLA2G4A). Similar results were obtained by shRNA-mediated suppression of Pla2g4a. Remarkably, pharmacologic inhibition of PLA2G4A with arachidonyl trifluoromethyl ketone (AACOCF3) accelerated the loss of H9M cells in bulk cultures. Additionally, AACOCF3 treatment of H9M cells reduced colony numbers and colony sizes in methylcellulose. Moreover, AACOCF3 was highly active in human AML with MLL rearrangement, in which PLA2G4A was significantly higher expressed than in AML patients without MLL rearrangement, and is sufficient as an independent prognostic marker. Our work, thus, identifies PLA2G4A as a prognostic marker and potential therapeutic target for H9M-dependent AML with MLL-rearrangement.
Collapse
MESH Headings
- Apoptosis
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- CRISPR-Cas Systems
- Cell Proliferation
- Gene Expression Regulation, Neoplastic
- Group IV Phospholipases A2/antagonists & inhibitors
- Group IV Phospholipases A2/genetics
- High-Throughput Screening Assays
- Homeodomain Proteins/genetics
- Homeodomain Proteins/metabolism
- Humans
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Myeloid Ecotropic Viral Integration Site 1 Protein/genetics
- Myeloid Ecotropic Viral Integration Site 1 Protein/metabolism
- Tumor Cells, Cultured
Collapse
Affiliation(s)
- Jacob Jalil Hassan
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
| | - Anna Lieske
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
- Department of Pediatric Hematology and Oncology, Hannover Medical School, 30625 Hannover, Germany
| | - Nicole Dörpmund
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
- Department of Pediatric Hematology and Oncology, Hannover Medical School, 30625 Hannover, Germany
| | - Denise Klatt
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
| | - Dirk Hoffmann
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
| | - Marc-Jens Kleppa
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
| | - Olga S. Kustikova
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
| | - Maike Stahlhut
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
| | - Adrian Schwarzer
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, 30625 Hannover, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
- Division of Hematology/Oncology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Tobias Maetzig
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (J.J.H.); (A.L.); (N.D.); (D.K.); (D.H.); (M.-J.K.); (O.S.K.); (M.S.); (A.S.); (A.S.)
- Department of Pediatric Hematology and Oncology, Hannover Medical School, 30625 Hannover, Germany
- Correspondence:
| |
Collapse
|
8
|
Kosanke M, Osetek K, Haase A, Wiehlmann L, Davenport C, Schwarzer A, Adams F, Kleppa MJ, Schambach A, Merkert S, Wunderlich S, Menke S, Dorda M, Martin U. Reprogramming enriches for somatic cell clones with small-scale mutations in cancer-associated genes. Mol Ther 2021; 29:2535-2553. [PMID: 33831558 DOI: 10.1016/j.ymthe.2021.04.007] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 03/03/2021] [Accepted: 04/02/2021] [Indexed: 02/06/2023] Open
Abstract
Cellular therapies based on induced pluripotent stem cells (iPSCs) come out of age and an increasing number of clinical trials applying iPSC-based transplants are ongoing or in preparation. Recent studies, however, demonstrated a high number of small-scale mutations in iPSCs. Although the mutational load in iPSCs seems to be largely derived from their parental cells, it is still unknown whether reprogramming may enrich for individual mutations that could lead to loss of functionality and tumor formation from iPSC derivatives. 30 hiPSC lines were analyzed by whole exome sequencing. High accuracy amplicon sequencing showed that all analyzed small-scale variants pre-existed in their parental cells and that individual mutations present in small subpopulations of parental cells become enriched among hiPSC clones during reprogramming. Among those, putatively actionable driver mutations affect genes related to cell-cycle control, cell death, and pluripotency and may confer a selective advantage during reprogramming. Finally, a short hairpin RNA (shRNA)-based experimental approach was applied to provide additional evidence for the individual impact of such genes on the reprogramming efficiency. In conclusion, we show that enriched mutations in curated onco- and tumor suppressor genes may account for an increased tumor risk and impact the clinical value of patient-derived hiPSCs.
Collapse
Affiliation(s)
- Maike Kosanke
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Department of Cardiothoracic, Transplantation and Vascular Surgery, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany, Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), 30625 Hannover, Germany
| | - Katarzyna Osetek
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Department of Cardiothoracic, Transplantation and Vascular Surgery, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany, Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), 30625 Hannover, Germany
| | - Alexandra Haase
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Department of Cardiothoracic, Transplantation and Vascular Surgery, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany, Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), 30625 Hannover, Germany
| | - Lutz Wiehlmann
- Research Core Unit Genomics, Hannover Medical School, 30625 Hannover, Germany
| | - Colin Davenport
- Research Core Unit Genomics, Hannover Medical School, 30625 Hannover, Germany
| | - Adrian Schwarzer
- Department of Hematology, Oncology and Stem Cell Transplantation, Institute of Experimental Hematology, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Felix Adams
- Department of Hematology, Oncology and Stem Cell Transplantation, Institute of Experimental Hematology, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Marc-Jens Kleppa
- Department of Hematology, Oncology and Stem Cell Transplantation, Institute of Experimental Hematology, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Axel Schambach
- Department of Hematology, Oncology and Stem Cell Transplantation, Institute of Experimental Hematology, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Sylvia Merkert
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Department of Cardiothoracic, Transplantation and Vascular Surgery, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany, Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), 30625 Hannover, Germany
| | - Stephanie Wunderlich
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Department of Cardiothoracic, Transplantation and Vascular Surgery, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany, Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), 30625 Hannover, Germany
| | - Sandra Menke
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Department of Cardiothoracic, Transplantation and Vascular Surgery, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany, Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), 30625 Hannover, Germany
| | - Marie Dorda
- Research Core Unit Genomics, Hannover Medical School, 30625 Hannover, Germany
| | - Ulrich Martin
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Department of Cardiothoracic, Transplantation and Vascular Surgery, REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany, Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), 30625 Hannover, Germany.
| |
Collapse
|
9
|
Lüdtke TH, Wojahn I, Kleppa MJ, Schierstaedt J, Christoffels VM, Künzler P, Kispert A. Combined genomic and proteomic approaches reveal DNA binding sites and interaction partners of TBX2 in the developing lung. Respir Res 2021; 22:85. [PMID: 33731112 PMCID: PMC7968368 DOI: 10.1186/s12931-021-01679-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 11/23/2020] [Accepted: 03/07/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Tbx2 encodes a transcriptional repressor implicated in the development of numerous organs in mouse. During lung development TBX2 maintains the proliferation of mesenchymal progenitors, and hence, epithelial proliferation and branching morphogenesis. The pro-proliferative function was traced to direct repression of the cell-cycle inhibitor genes Cdkn1a and Cdkn1b, as well as of genes encoding WNT antagonists, Frzb and Shisa3, to increase pro-proliferative WNT signaling. Despite these important molecular insights, we still lack knowledge of the DNA occupancy of TBX2 in the genome, and of the protein interaction partners involved in transcriptional repression of target genes. METHODS We used chromatin immunoprecipitation (ChIP)-sequencing and expression analyses to identify genomic DNA-binding sites and transcription units directly regulated by TBX2 in the developing lung. Moreover, we purified TBX2 containing protein complexes from embryonic lung tissue and identified potential interaction partners by subsequent liquid chromatography/mass spectrometry. The interaction with candidate proteins was validated by immunofluorescence, proximity ligation and individual co-immunoprecipitation analyses. RESULTS We identified Il33 and Ccn4 as additional direct target genes of TBX2 in the pulmonary mesenchyme. Analyzing TBX2 occupancy data unveiled the enrichment of five consensus sequences, three of which match T-box binding elements. The remaining two correspond to a high mobility group (HMG)-box and a homeobox consensus sequence motif. We found and validated binding of TBX2 to the HMG-box transcription factor HMGB2 and the homeobox transcription factor PBX1, to the heterochromatin protein CBX3, and to various members of the nucleosome remodeling and deacetylase (NuRD) chromatin remodeling complex including HDAC1, HDAC2 and CHD4. CONCLUSION Our data suggest that TBX2 interacts with homeobox and HMG-box transcription factors as well as with the NuRD chromatin remodeling complex to repress transcription of anti-proliferative genes in the pulmonary mesenchyme.
Collapse
Affiliation(s)
- Timo H Lüdtke
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Irina Wojahn
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Marc-Jens Kleppa
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Jasper Schierstaedt
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
- Plant-Microbe Systems, Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
| | - Vincent M Christoffels
- Department of Anatomy, Embryology and Physiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Patrick Künzler
- Institut Für Pflanzengenetik, Leibniz Universität Hannover, Hannover, Germany
| | - Andreas Kispert
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany.
| |
Collapse
|
10
|
Weiss AC, Bohnenpoll T, Kurz J, Blank P, Airik R, Lüdtke TH, Kleppa MJ, Deuper L, Kaiser M, Mamo TM, Costa R, von Hahn T, Trowe MO, Kispert A. Delayed onset of smooth muscle cell differentiation leads to hydroureter formation in mice with conditional loss of the zinc finger transcription factor gene Gata2 in the ureteric mesenchyme. J Pathol 2019; 248:452-463. [PMID: 30916783 DOI: 10.1002/path.5270] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 01/08/2019] [Revised: 03/03/2019] [Accepted: 03/21/2019] [Indexed: 12/22/2022]
Abstract
The establishment of the peristaltic machinery of the ureter is precisely controlled to cope with the onset of urine production in the fetal kidney. Retinoic acid (RA) has been identified as a signal that maintains the mesenchymal progenitors of the contractile smooth muscle cells (SMCs), while WNTs, SHH, and BMP4 induce their differentiation. How the activity of the underlying signalling pathways is controlled in time, space, and quantity to activate coordinately the SMC programme is poorly understood. Here, we provide evidence that the Zn-finger transcription factor GATA2 is involved in this crosstalk. In mice, Gata2 is expressed in the undifferentiated ureteric mesenchyme under control of RA signalling. Conditional deletion of Gata2 by a Tbx18cre driver results in hydroureter formation at birth, associated with a loss of differentiated SMCs. Analysis at earlier stages and in explant cultures revealed that SMC differentiation is not abrogated but delayed and that dilated ureters can partially regain peristaltic activity when relieved of urine pressure. Molecular analysis identified increased RA signalling as one factor contributing to the delay in SMC differentiation, possibly caused by reduced direct transcriptional activation of Cyp26a1, which encodes an RA-degrading enzyme. Our study identified GATA2 as a feedback inhibitor of RA signalling important for precise onset of ureteric SMC differentiation, and suggests that in a subset of cases of human congenital ureter dilatations, temporary relief of urine pressure may ameliorate the differentiation status of the SMC coat. © 2019 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Anna-Carina Weiss
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Tobias Bohnenpoll
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Jennifer Kurz
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Patrick Blank
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Rannar Airik
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Timo H Lüdtke
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Marc-Jens Kleppa
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Lena Deuper
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Marina Kaiser
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Tamrat M Mamo
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Rui Costa
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany.,Klinik für Gastroenterologie, Hepatologie und Endokrinologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Thomas von Hahn
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany.,Klinik für Gastroenterologie, Hepatologie und Endokrinologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Mark-Oliver Trowe
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Andreas Kispert
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| |
Collapse
|
11
|
Lüdtke TH, Rudat C, Kurz J, Häfner R, Greulich F, Wojahn I, Aydoğdu N, Mamo TM, Kleppa MJ, Trowe MO, Bohnenpoll T, Taketo MM, Kispert A. Mesothelial mobilization in the developing lung and heart differs in timing, quantity, and pathway dependency. Am J Physiol Lung Cell Mol Physiol 2019; 316:L767-L783. [PMID: 30702346 DOI: 10.1152/ajplung.00212.2018] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The mesothelial lining of the lung, the visceral pleura, and of the heart, the epicardium, derive from a common multipotent precursor tissue, the mesothelium of the embryonic thoracic cavity that also contributes to organ-specific mesenchymal cell types. Insight into mesothelial mobilization and differentiation has prevailedin the developing heart while the mesenchymal transition and fate of the visceral pleura are poorly understood. Here, we use the fact that the early mesothelium of both the lung and the heart expresses the transcription factor gene Wt1, to comparatively analyze mesothelial mobilization in the two organs by a genetic cre-loxP-based conditional approach. We show that epicardial cells are mobilized in a large number between E12.5 and E14.5, whereas pleural mobilization occurs only sporadically and variably in few regions of the lung in a temporally highly confined manner shortly after E12.5. Mesothelium-specific inactivation of unique pathway components using a Wt1creERT2 line excluded a requirement for canonical WNT, NOTCH, HH, TGFB, PDGFRA, and FGFR1/FGFR2 signaling in the mesenchymal transition of the visceral pleura but indicated a deleterious effect of activated WNT, NOTCH, and HH signaling on lung development. Epicardial mobilization was negatively impacted on by loss of HH, PDGFRA, FGFR1/2 signaling. Epicardial overactivation of WNT, NOTCH, and HH disturbed epicardial and myocardial integrity. We conclude that mesothelial mobilization in the developing lung and heart differs in timing, quantity and pathway dependency, indicating the organ specificity of the program.
Collapse
Affiliation(s)
- Timo H Lüdtke
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Carsten Rudat
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Jennifer Kurz
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Regine Häfner
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Franziska Greulich
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Irina Wojahn
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Nurullah Aydoğdu
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Tamrat M Mamo
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Marc-Jens Kleppa
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Mark-Oliver Trowe
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Tobias Bohnenpoll
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| | - Makoto Mark Taketo
- Division of Experimental Therapeutics, Graduate School of Medicine, Kyoto University , Kyoto , Japan
| | - Andreas Kispert
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover , Germany
| |
Collapse
|
12
|
Rivera-Reyes R, Kleppa MJ, Kispert A. Proteomic analysis identifies transcriptional cofactors and homeobox transcription factors as TBX18 binding proteins. PLoS One 2018; 13:e0200964. [PMID: 30071041 PMCID: PMC6071992 DOI: 10.1371/journal.pone.0200964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 05/30/2018] [Indexed: 01/04/2023] Open
Abstract
The TBX18 transcription factor is a crucial developmental regulator of several organ systems in mice, and loss of its transcriptional repression activity causes dilative nephropathies in humans. The molecular complexes with which TBX18 regulates transcription are poorly understood prompting us to use an unbiased proteomic approach to search for protein interaction partners. Using overexpressed dual tagged TBX18 as bait, we identified by tandem purification and subsequent LC-MS analysis TBX18 binding proteins in 293 cells. Clustering of functional annotations of the identified proteins revealed a highly significant enrichment of transcriptional cofactors and homeobox transcription factors. Using nuclear recruitment assays as well as GST pull-downs, we validated CBFB, GAR1, IKZF2, NCOA5, SBNO2 and CHD7 binding to the T-box of TBX18 in vitro. From these transcriptional cofactors, CBFB, CHD7 and IKZF2 enhanced the transcriptional repression of TBX18, while NCOA5 and SBNO2 dose-dependently relieved it. All tested homeobox transcription factors interacted with the T-box of TBX18 in pull-down assays, with members of the Pbx and Prrx subfamilies showing coexpression with Tbx18 in the developing ureter of the mouse. In summary, we identified and characterized new TBX18 binding partners that may influence the transcriptional activity of TBX18 in vivo.
Collapse
Affiliation(s)
| | - Marc-Jens Kleppa
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Andreas Kispert
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
- * E-mail:
| |
Collapse
|
13
|
Bohnenpoll T, Wittern AB, Mamo TM, Weiss AC, Rudat C, Kleppa MJ, Schuster-Gossler K, Wojahn I, Lüdtke THW, Trowe MO, Kispert A. A SHH-FOXF1-BMP4 signaling axis regulating growth and differentiation of epithelial and mesenchymal tissues in ureter development. PLoS Genet 2017; 13:e1006951. [PMID: 28797033 PMCID: PMC5567910 DOI: 10.1371/journal.pgen.1006951] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 08/22/2017] [Accepted: 08/01/2017] [Indexed: 12/19/2022] Open
Abstract
The differentiated cell types of the epithelial and mesenchymal tissue compartments of the mature ureter of the mouse arise in a precise temporal and spatial sequence from uncommitted precursor cells of the distal ureteric bud epithelium and its surrounding mesenchyme. Previous genetic efforts identified a member of the Hedgehog (HH) family of secreted proteins, Sonic hedgehog (SHH) as a crucial epithelial signal for growth and differentiation of the ureteric mesenchyme. Here, we used conditional loss- and gain-of-function experiments of the unique HH signal transducer Smoothened (SMO) to further characterize the cellular functions and unravel the effector genes of HH signaling in ureter development. We showed that HH signaling is not only required for proliferation and SMC differentiation of cells of the inner mesenchymal region but also for survival of cells of the outer mesenchymal region, and for epithelial proliferation and differentiation. We identified the Forkhead transcription factor gene Foxf1 as a target of HH signaling in the ureteric mesenchyme. Expression of a repressor version of FOXF1 in this tissue completely recapitulated the mesenchymal and epithelial proliferation and differentiation defects associated with loss of HH signaling while re-expression of a wildtype version of FOXF1 in the inner mesenchymal layer restored these cellular programs when HH signaling was inhibited. We further showed that expression of Bmp4 in the ureteric mesenchyme depends on HH signaling and Foxf1, and that exogenous BMP4 rescued cell proliferation and epithelial differentiation in ureters with abrogated HH signaling or FOXF1 function. We conclude that SHH uses a FOXF1-BMP4 module to coordinate the cellular programs for ureter elongation and differentiation, and suggest that deregulation of this signaling axis occurs in human congenital anomalies of the kidney and urinary tract (CAKUT). The mammalian ureter is a simple tube with a specialized multi-layered epithelium, the urothelium, and a surrounding coat of fibroblasts and peristaltically active smooth muscle cells. Besides its important function in urinary drainage, the ureter represents a simple model system to study epithelial and mesenchymal tissue interactions in organ development. The differentiated cell types of the ureter coordinately arise from precursor cells of the distal ureteric bud and its surrounding mesenchyme. How their survival, growth and differentiation is regulated and coordinated within and between the epithelial and mesenchymal tissue compartments is largely unknown. Previous work identified Sonic hedgehog (SHH) as a crucial epithelial signal for growth and differentiation of the ureteric mesenchyme, but the entirety of the cellular functions and the molecular mediators of its mesenchymal signaling pathway have remained obscure. Here we showed that epithelial SHH acts in a paracrine fashion onto the ureteric mesenchyme to activate a FOXF1-BMP4 regulatory module that directs growth and differentiation of both ureteric tissue compartments. HH signaling additionally acts in outer mesenchymal cells as a survival factor. Thus, SHH is an epithelial signal that coordinates various cellular programs in early ureter development.
Collapse
Affiliation(s)
- Tobias Bohnenpoll
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Anna B. Wittern
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Tamrat M. Mamo
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Anna-Carina Weiss
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Carsten Rudat
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Marc-Jens Kleppa
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | | | - Irina Wojahn
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Timo H.-W. Lüdtke
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Mark-Oliver Trowe
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Andreas Kispert
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
- * E-mail:
| |
Collapse
|
14
|
Mamo TM, Wittern AB, Kleppa MJ, Bohnenpoll T, Weiss AC, Kispert A. BMP4 uses several different effector pathways to regulate proliferation and differentiation in the epithelial and mesenchymal tissue compartments of the developing mouse ureter. Hum Mol Genet 2017; 26:3553-3563. [DOI: 10.1093/hmg/ddx242] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 06/19/2017] [Indexed: 11/13/2022] Open
|
15
|
Lüdtke TH, Rudat C, Wojahn I, Weiss AC, Kleppa MJ, Kurz J, Farin HF, Moon A, Christoffels VM, Kispert A. Tbx2 and Tbx3 Act Downstream of Shh to Maintain Canonical Wnt Signaling during Branching Morphogenesis of the Murine Lung. Dev Cell 2016; 39:239-253. [PMID: 27720610 DOI: 10.1016/j.devcel.2016.08.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 07/25/2016] [Accepted: 08/19/2016] [Indexed: 12/11/2022]
Abstract
Numerous signals drive the proliferative expansion of the distal endoderm and the underlying mesenchyme during lung branching morphogenesis, but little is known about how these signals are integrated. Here, we show by analysis of conditional double mutants that the two T-box transcription factor genes Tbx2 and Tbx3 act together in the lung mesenchyme to maintain branching morphogenesis. Expression of both genes depends on epithelially derived Shh signaling, with additional modulation by Bmp, Wnt, and Tgfβ signaling. Genetic rescue experiments reveal that Tbx2 and Tbx3 function downstream of Shh to maintain pro-proliferative mesenchymal Wnt signaling, in part by direct repression of the Wnt antagonists Frzb and Shisa3. In combination with our previous finding that Tbx2 and Tbx3 repress the cell-cycle inhibitors Cdkn1a and Cdkn1b, we conclude that Tbx2 and Tbx3 maintain proliferation of the lung mesenchyme by way of at least two molecular mechanisms: regulating cell-cycle regulation and integrating the activity of multiple signaling pathways.
Collapse
Affiliation(s)
- Timo H Lüdtke
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Carsten Rudat
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Irina Wojahn
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Anna-Carina Weiss
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Marc-Jens Kleppa
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Jennifer Kurz
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Henner F Farin
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Anne Moon
- Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | - Vincent M Christoffels
- Department of Anatomy, Embryology and Physiology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands
| | - Andreas Kispert
- Institut für Molekularbiologie, Medizinische Hochschule Hannover, 30625 Hannover, Germany.
| |
Collapse
|
16
|
Vivante A, Kleppa MJ, Schulz J, Kohl S, Sharma A, Chen J, Shril S, Hwang DY, Weiss AC, Kaminski MM, Shukrun R, Kemper MJ, Lehnhardt A, Beetz R, Sanna-Cherchi S, Verbitsky M, Gharavi AG, Stuart HM, Feather SA, Goodship JA, Goodship THJ, Woolf AS, Westra SJ, Doody DP, Bauer SB, Lee RS, Adam RM, Lu W, Reutter HM, Kehinde EO, Mancini EJ, Lifton RP, Tasic V, Lienkamp SS, Jüppner H, Kispert A, Hildebrandt F. Mutations in TBX18 Cause Dominant Urinary Tract Malformations via Transcriptional Dysregulation of Ureter Development. Am J Hum Genet 2015; 97:291-301. [PMID: 26235987 DOI: 10.1016/j.ajhg.2015.07.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 07/07/2015] [Indexed: 12/22/2022] Open
Abstract
Congenital anomalies of the kidneys and urinary tract (CAKUT) are the most common cause of chronic kidney disease in the first three decades of life. Identification of single-gene mutations that cause CAKUT permits the first insights into related disease mechanisms. However, for most cases the underlying defect remains elusive. We identified a kindred with an autosomal-dominant form of CAKUT with predominant ureteropelvic junction obstruction. By whole exome sequencing, we identified a heterozygous truncating mutation (c.1010delG) of T-Box transcription factor 18 (TBX18) in seven affected members of the large kindred. A screen of additional families with CAKUT identified three families harboring two heterozygous TBX18 mutations (c.1570C>T and c.487A>G). TBX18 is essential for developmental specification of the ureteric mesenchyme and ureteric smooth muscle cells. We found that all three TBX18 altered proteins still dimerized with the wild-type protein but had prolonged protein half life and exhibited reduced transcriptional repression activity compared to wild-type TBX18. The p.Lys163Glu substitution altered an amino acid residue critical for TBX18-DNA interaction, resulting in impaired TBX18-DNA binding. These data indicate that dominant-negative TBX18 mutations cause human CAKUT by interference with TBX18 transcriptional repression, thus implicating ureter smooth muscle cell development in the pathogenesis of human CAKUT.
Collapse
Affiliation(s)
- Asaf Vivante
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Talpiot Medical Leadership Program, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Marc-Jens Kleppa
- Institut für Molekularbiologie, Medizinische Hochschule Hannover 30625, Germany
| | - Julian Schulz
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Stefan Kohl
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Amita Sharma
- Pediatric Nephrology Unit and Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Jing Chen
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Shirlee Shril
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Daw-Yang Hwang
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Division of Nephrology, Department of Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Anna-Carina Weiss
- Institut für Molekularbiologie, Medizinische Hochschule Hannover 30625, Germany
| | - Michael M Kaminski
- Department of Medicine, Renal Division, University of Freiburg Medical Center, 79106 Freiburg, Germany
| | - Rachel Shukrun
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Markus J Kemper
- Department of Pediatrics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Anja Lehnhardt
- Department of Pediatrics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Rolf Beetz
- Center for Pediatric and Adolescent Medicine, University Medical Clinic, 55131 Mainz, Germany
| | | | - Miguel Verbitsky
- Department of Medicine, Columbia University, New York, NY 10023, USA
| | - Ali G Gharavi
- Department of Medicine, Columbia University, New York, NY 10023, USA
| | - Helen M Stuart
- Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester Academic Health Science Centre and the Royal Manchester Children's and St Mary's Hospitals, Manchester M13 9WL, UK
| | | | - Judith A Goodship
- Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne NE1 3BZ, UK
| | - Timothy H J Goodship
- Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne NE1 3BZ, UK
| | - Adrian S Woolf
- Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester Academic Health Science Centre and the Royal Manchester Children's and St Mary's Hospitals, Manchester M13 9WL, UK
| | - Sjirk J Westra
- Pediatric Radiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Daniel P Doody
- Department of Pediatric Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Stuart B Bauer
- Department of Urology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Richard S Lee
- Department of Urology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Rosalyn M Adam
- Department of Urology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Weining Lu
- Renal Section, Department of Medicine, Boston University Medical Center, Boston, MA 02118, USA
| | - Heiko M Reutter
- Department of Neonatology, Children's Hospital, University of Bonn, 53127 Bonn, Germany
| | - Elijah O Kehinde
- Division of Urology, Department of Surgery, Kuwait University, 13110 Safat, Kuwait
| | - Erika J Mancini
- Division of Structural Biology, The Wellcome Trust Centre for Human Genetics, University of Oxford, Headington, Oxford OX3 7BN, UK; School of Life Sciences, University of Sussex, Brighton BN1 9QD, UK
| | - Richard P Lifton
- Department of Human Genetics, Yale University School of Medicine, New Haven, CT 06510, USA; Howard Hughes Medical Institute
| | - Velibor Tasic
- Medical School Skopje, University Children's Hospital, 1000 Skopje, Macedonia
| | - Soeren S Lienkamp
- Department of Medicine, Renal Division, University of Freiburg Medical Center, 79106 Freiburg, Germany; Center for Biological Signaling Studies (BIOSS), 79104 Freiburg, Germany
| | - Harald Jüppner
- Pediatric Nephrology Unit and Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Andreas Kispert
- Institut für Molekularbiologie, Medizinische Hochschule Hannover 30625, Germany
| | - Friedhelm Hildebrandt
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute.
| |
Collapse
|
17
|
Kleppa MJ, Erlenwein SV, Darashchonak N, von Kaisenberg CS, von Versen-Höynck F. Hypoxia and the anticoagulants dalteparin and acetylsalicylic acid affect human placental amino acid transport. PLoS One 2014; 9:e99217. [PMID: 24901243 PMCID: PMC4047053 DOI: 10.1371/journal.pone.0099217] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 05/12/2014] [Indexed: 01/12/2023] Open
Abstract
Background Anticoagulants, e.g. low-molecular weight heparins (LMWHs) and acetylsalicylic acid (ASA) are prescribed to women at risk for pregnancy complications that are associated with impaired placentation and placental hypoxia. Beyond their role as anticoagulants these compounds exhibit direct effects on trophoblast but their impact on placental function is unknown. The amino acid transport systems A and L, which preferably transfer essential amino acids, are well-described models to study placental nutrient transport. We aimed to examine the effect of hypoxia, LMWHs and ASA on the activity of the placental amino acid transport systems A and L and associated signalling mechanisms. Methods The uptake of C14-MeAIB (system A) or H3-leucin (system L) was investigated after incubation of primary villous fragments isolated from term placentas. Villous tissue was incubated at 2% O2 (hypoxia), 8% O2 and standard culture conditions (21% O2) or at 2% O2 and 21% O2 with dalteparin or ASA. Activation of the JAK/STAT or mTOR signalling pathways was determined by Western analysis of total and phosphorylated STAT3 or Raptor. Results Hypoxia decreased system A mediated MeAIB uptake and increased system L mediated leucine uptake compared to standard culture conditions (21% O2). This was accompanied by an impairment of STAT3 and a stimulation of Raptor signalling. System L activity increased at 8% O2. Dalteparin treatment reduced system A and system L activity under normoxic conditions and ASA (1 mM) decreased system A and L transporter activity under normoxic and hypoxic conditions. Conclusions Our data underline the dependency of placental function on oxygen supply. LMWHs and ASA are not able to reverse the effects of hypoxia on placental amino acid transport. These findings and the uncovering of the signalling mechanisms in more detail will help to understand the impact of LMWHs and ASA on placental function and fetal growth.
Collapse
Affiliation(s)
- Marc-Jens Kleppa
- Department of Obstetrics and Gynecology, Hannover Medical School, Hannover, Germany
| | | | | | | | | |
Collapse
|
18
|
Kleppa MJ, Darashchonak N, Kaisenberg CV, Versen-Höynck FV. Die Regulation des plazentaren Aminosäuretransportes durch LMWH. Z Geburtshilfe Neonatol 2013. [DOI: 10.1055/s-0033-1361324] [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: 10/26/2022]
|