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Stroganov S, Harris T, Fellus-Alyagor L, Ben Moyal L, Plitman Mayo R, Golani O, Hirsch D, Ben-Dor S, Brandis A, Mehlman T, Kovo M, Biron-Shental T, Dekel N, Neeman M. The differential regulation of placenta trophoblast bisphosphoglycerate mutase in fetal growth restriction: preclinical study in mice and observational histological study of human placenta. eLife 2024; 13:e82631. [PMID: 38314803 PMCID: PMC10883672 DOI: 10.7554/elife.82631] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 01/25/2024] [Indexed: 02/07/2024] Open
Abstract
Background Fetal growth restriction (FGR) is a pregnancy complication in which a newborn fails to achieve its growth potential, increasing the risk of perinatal morbidity and mortality. Chronic maternal gestational hypoxia, as well as placental insufficiency are associated with increased FGR incidence; however, the molecular mechanisms underlying FGR remain unknown. Methods Pregnant mice were subjected to acute or chronic hypoxia (12.5% O2) resulting in reduced fetal weight. Placenta oxygen transport was assessed by blood oxygenation level dependent (BOLD) contrast magnetic resonance imaging (MRI). The placentae were analyzed via immunohistochemistry and in situ hybridization. Human placentae were selected from FGR and matched controls and analyzed by immunohistochemistry (IHC). Maternal and cord sera were analyzed by mass spectrometry. Results We show that murine acute and chronic gestational hypoxia recapitulates FGR phenotype and affects placental structure and morphology. Gestational hypoxia decreased labyrinth area, increased the incidence of red blood cells (RBCs) in the labyrinth while expanding the placental spiral arteries (SpA) diameter. Hypoxic placentae exhibited higher hemoglobin-oxygen affinity compared to the control. Placental abundance of Bisphosphoglycerate mutase (BPGM) was upregulated in the syncytiotrophoblast and spiral artery trophoblast cells (SpA TGCs) in the murine gestational hypoxia groups compared to the control. Hif1α levels were higher in the acute hypoxia group compared to the control. In contrast, human FGR placentae exhibited reduced BPGM levels in the syncytiotrophoblast layer compared to placentae from healthy uncomplicated pregnancies. Levels of 2,3 BPG, the product of BPGM, were lower in cord serum of human FGR placentae compared to control. Polar expression of BPGM was found in both human and mouse placentae syncytiotrophoblast, with higher expression facing the maternal circulation. Moreover, in the murine SpA TGCs expression of BPGM was concentrated exclusively in the apical cell side, in direct proximity to the maternal circulation. Conclusions This study suggests a possible involvement of placental BPGM in maternal-fetal oxygen transfer, and in the pathophysiology of FGR. Funding This work was supported by the Weizmann Krenter Foundation and the Weizmann - Ichilov (Tel Aviv Sourasky Medical Center) Collaborative Grant in Biomedical Research, by the Minerva Foundation, by the ISF KillCorona grant 3777/19.
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Affiliation(s)
- Sima Stroganov
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Talia Harris
- Chemical Research Support Weizmann Institute of Science, Rehovot, Israel
| | | | - Lital Ben Moyal
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Romina Plitman Mayo
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Ofra Golani
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Dana Hirsch
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Shifra Ben-Dor
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Alexander Brandis
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Tevie Mehlman
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Michal Kovo
- OBGYN, Meir Medical Center, Kfar Saba, Israel
- Tel Aviv University, School of Medicine, Tel Aviv, Israel
| | - Tal Biron-Shental
- OBGYN, Meir Medical Center, Kfar Saba, Israel
- Tel Aviv University, School of Medicine, Tel Aviv, Israel
| | - Nava Dekel
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Michal Neeman
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
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2
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Cohen Shvefel S, Pai JA, Cao Y, Pal LR, Levy R, Yao W, Cheng K, Zemanek M, Bartok O, Weller C, Yin Y, Du PP, Yakubovich E, Orr I, Ben-Dor S, Oren R, Fellus-Alyagor L, Golani O, Goliand I, Ranmar D, Savchenko I, Ketrarou N, Schäffer AA, Ruppin E, Satpathy AT, Samuels Y. Temporal genomic analysis of melanoma rejection identifies regulators of tumor immune evasion. bioRxiv 2023:2023.11.29.569032. [PMID: 38077050 PMCID: PMC10705560 DOI: 10.1101/2023.11.29.569032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Decreased intra-tumor heterogeneity (ITH) correlates with increased patient survival and immunotherapy response. However, even highly homogenous tumors may display variability in their aggressiveness, and how immunologic-factors impinge on their aggressiveness remains understudied. Here we studied the mechanisms responsible for the immune-escape of murine tumors with low ITH. We compared the temporal growth of homogeneous, genetically-similar single-cell clones that are rejected vs. those that are not-rejected after transplantation in-vivo using single-cell RNA sequencing and immunophenotyping. Non-rejected clones showed high infiltration of tumor-associated-macrophages (TAMs), lower T-cell infiltration, and increased T-cell exhaustion compared to rejected clones. Comparative analysis of rejection-associated gene expression programs, combined with in-vivo CRISPR knockout screens of candidate mediators, identified Mif (macrophage migration inhibitory factor) as a regulator of immune rejection. Mif knockout led to smaller tumors and reversed non-rejection-associated immune composition, particularly, leading to the reduction of immunosuppressive macrophage infiltration. Finally, we validated these results in melanoma patient data.
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Affiliation(s)
- Sapir Cohen Shvefel
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Joy A Pai
- Department of Pathology, Stanford University, Stanford, CA, USA
| | - Yingying Cao
- Cancer Data Science Laboratory, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Lipika R Pal
- Cancer Data Science Laboratory, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Ronen Levy
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Winnie Yao
- Department of Pathology, Stanford University, Stanford, CA, USA
| | - Kuoyuan Cheng
- Cancer Data Science Laboratory, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
- MSD R&D (China) Co., Ltd
| | - Marie Zemanek
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Osnat Bartok
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Chen Weller
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Yajie Yin
- Department of Pathology, Stanford University, Stanford, CA, USA
| | - Peter P Du
- Department of Pathology, Stanford University, Stanford, CA, USA
| | - Elizabeta Yakubovich
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Irit Orr
- Bioinformatics Unit, Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Shifra Ben-Dor
- Bioinformatics Unit, Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Roni Oren
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Liat Fellus-Alyagor
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Ofra Golani
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Inna Goliand
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Dean Ranmar
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Ilya Savchenko
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Nadav Ketrarou
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Alejandro A Schäffer
- Cancer Data Science Laboratory, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Eytan Ruppin
- Cancer Data Science Laboratory, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Ansuman T Satpathy
- Department of Pathology, Stanford University, Stanford, CA, USA
- Gladstone-UCSF Institute of Genomic Immunology, San Francisco, CA, USA
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA
| | - Yardena Samuels
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
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3
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Goldman O, Adler LN, Hajaj E, Croese T, Darzi N, Galai S, Tishler H, Ariav Y, Lavie D, Fellus-Alyagor L, Oren R, Kuznetsov Y, David E, Jaschek R, Stossel C, Singer O, Malitsky S, Barak R, Seger R, Erez N, Amit I, Tanay A, Saada A, Golan T, Rubinek T, Sang Lee J, Ben-Shachar S, Wolf I, Erez A. Early Infiltration of Innate Immune Cells to the Liver Depletes HNF4α and Promotes Extrahepatic Carcinogenesis. Cancer Discov 2023; 13:1616-1635. [PMID: 36972357 PMCID: PMC10326600 DOI: 10.1158/2159-8290.cd-22-1062] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 09/22/2022] [Revised: 01/19/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023]
Abstract
Multiple studies have identified metabolic changes within the tumor and its microenvironment during carcinogenesis. Yet, the mechanisms by which tumors affect the host metabolism are unclear. We find that systemic inflammation induced by cancer leads to liver infiltration of myeloid cells at early extrahepatic carcinogenesis. The infiltrating immune cells via IL6-pSTAT3 immune-hepatocyte cross-talk cause the depletion of a master metabolic regulator, HNF4α, consequently leading to systemic metabolic changes that promote breast and pancreatic cancer proliferation and a worse outcome. Preserving HNF4α levels maintains liver metabolism and restricts carcinogenesis. Standard liver biochemical tests can identify early metabolic changes and predict patients' outcomes and weight loss. Thus, the tumor induces early metabolic changes in its macroenvironment with diagnostic and potentially therapeutic implications for the host. SIGNIFICANCE Cancer growth requires a permanent nutrient supply starting from early disease stages. We find that the tumor extends its effect to the host's liver to obtain nutrients and rewires the systemic and tissue-specific metabolism early during carcinogenesis. Preserving liver metabolism restricts tumor growth and improves cancer outcomes. This article is highlighted in the In This Issue feature, p. 1501.
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Affiliation(s)
- Omer Goldman
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Lital N Adler
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Emma Hajaj
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Tommaso Croese
- Department of Brain Science, Weizmann Institute of Science, Rehovot, Israel
| | - Naama Darzi
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Sivan Galai
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Hila Tishler
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Yarden Ariav
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Dor Lavie
- Department of Pathology, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liat Fellus-Alyagor
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Roni Oren
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Yuri Kuznetsov
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Eyal David
- Department of System Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Rami Jaschek
- Department of Computer Science and Applied Mathematics, Weizmann Institute of Science, Rehovot, Israel
| | - Chani Stossel
- Oncology Institute, Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Oded Singer
- Life Science Core Facility, Weizmann Institute of Science, Rehovot, Israel
| | - Sergey Malitsky
- Life Science Core Facility, Weizmann Institute of Science, Rehovot, Israel
| | - Renana Barak
- Oncology Division, Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Rony Seger
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Neta Erez
- Department of Pathology, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ido Amit
- Department of System Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Amos Tanay
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
- Department of Computer Science and Applied Mathematics, Weizmann Institute of Science, Rehovot, Israel
| | - Ann Saada
- Department of Genetics, Hadassah Medical Center, Hebrew University and Faculty of Medicine, Jerusalem, Israel
| | - Talia Golan
- Oncology Institute, Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Tamar Rubinek
- Oncology Division, Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Joo Sang Lee
- Department of Precision Medicine, School of Medicine and Department of Artificial Intelligence, Sungkyunkwan University, Suwon, Republic of Korea
| | - Shay Ben-Shachar
- Clalit Research Institute, Innovation Division, Clalit Health Services, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ido Wolf
- Oncology Division, Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Ayelet Erez
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
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4
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Prasad PK, Eizenshtadt N, Goliand I, Fellus-Alyagor L, Oren R, Golani O, Motiei L, Margulies D. Chemically programmable bacterial probes for the recognition of cell surface proteins. Mater Today Bio 2023; 20:100669. [PMID: 37334185 PMCID: PMC10275978 DOI: 10.1016/j.mtbio.2023.100669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/01/2023] [Accepted: 05/17/2023] [Indexed: 06/20/2023] Open
Abstract
Common methods to label cell surface proteins (CSPs) involve the use of fluorescently modified antibodies (Abs) or small-molecule-based ligands. However, optimizing the labeling efficiency of such systems, for example, by modifying them with additional fluorophores or recognition elements, is challenging. Herein we show that effective labeling of CSPs overexpressed in cancer cells and tissues can be obtained with fluorescent probes based on chemically modified bacteria. The bacterial probes (B-probes) are generated by non-covalently linking a bacterial membrane protein to DNA duplexes appended with fluorophores and small-molecule binders of CSPs overexpressed in cancer cells. We show that B-probes are exceptionally simple to prepare and modify because they are generated from self-assembled and easily synthesized components, such as self-replicating bacterial scaffolds and DNA constructs that can be readily appended, at well-defined positions, with various types of dyes and CSP binders. This structural programmability enabled us to create B-probes that can label different types of cancer cells with distinct colors, as well as generate very bright B-probes in which the multiple dyes are spatially separated along the DNA scaffold to avoid self-quenching. This enhancement in the emission signal enabled us to label the cancer cells with greater sensitivity and follow the internalization of the B-probes into these cells. The potential to apply the design principles underlying B-probes in therapy or inhibitor screening is also discussed here.
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Affiliation(s)
- Pragati K. Prasad
- Department of Chemical and Structural Biology, Weizmann Institute of Science Rehovot, 7610001, Israel
| | - Noa Eizenshtadt
- Department of Chemical and Structural Biology, Weizmann Institute of Science Rehovot, 7610001, Israel
| | - Inna Goliand
- Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Liat Fellus-Alyagor
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Roni Oren
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Ofra Golani
- Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Leila Motiei
- Department of Chemical and Structural Biology, Weizmann Institute of Science Rehovot, 7610001, Israel
| | - David Margulies
- Department of Chemical and Structural Biology, Weizmann Institute of Science Rehovot, 7610001, Israel
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5
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Gur C, Wang SY, Sheban F, Zada M, Li B, Kharouf F, Peleg H, Aamar S, Yalin A, Kirschenbaum D, Braun-Moscovici Y, Jaitin DA, Meir-Salame T, Hagai E, Kragesteen BK, Avni B, Grisariu S, Bornstein C, Shlomi-Loubaton S, David E, Shreberk-Hassidim R, Molho-Pessach V, Amar D, Tzur T, Kuint R, Gross M, Barboy O, Moshe A, Fellus-Alyagor L, Hirsch D, Addadi Y, Erenfeld S, Biton M, Tzemach T, Elazary A, Naparstek Y, Tzemach R, Weiner A, Giladi A, Balbir-Gurman A, Amit I. LGR5 expressing skin fibroblasts define a major cellular hub perturbed in scleroderma. Cell 2022; 185:1373-1388.e20. [PMID: 35381199 PMCID: PMC7612792 DOI: 10.1016/j.cell.2022.03.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [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: 06/15/2021] [Revised: 12/26/2021] [Accepted: 03/09/2022] [Indexed: 11/28/2022]
Abstract
Systemic sclerosis (scleroderma, SSc) is an incurable autoimmune disease with high morbidity and mortality rates. Here, we conducted a population-scale single-cell genomic analysis of skin and blood samples of 56 healthy controls and 97 SSc patients at different stages of the disease. We found immune compartment dysfunction only in a specific subtype of diffuse SSc patients but global dysregulation of the stromal compartment, particularly in a previously undefined subset of LGR5+-scleroderma-associated fibroblasts (ScAFs). ScAFs are perturbed morphologically and molecularly in SSc patients. Single-cell multiome profiling of stromal cells revealed ScAF-specific markers, pathways, regulatory elements, and transcription factors underlining disease development. Systematic analysis of these molecular features with clinical metadata associates specific ScAF targets with disease pathogenesis and SSc clinical traits. Our high-resolution atlas of the sclerodermatous skin spectrum will enable a paradigm shift in the understanding of SSc disease and facilitate the development of biomarkers and therapeutic strategies.
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Affiliation(s)
- Chamutal Gur
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel; Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Shuang-Yin Wang
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel.
| | - Fadi Sheban
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Mor Zada
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Baoguo Li
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Fadi Kharouf
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Hagit Peleg
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Suhail Aamar
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Adam Yalin
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | | | - Yolanda Braun-Moscovici
- Rheumatology Institute, Rambam Health Care Campus, Rappaport Faculty of Medicine, Technion-Israeli Institute of Technology, Haifa, Israel
| | | | - Tomer Meir-Salame
- Flow Cytometry Unit, Department of Biological Services, Weizmann Institute, Rehovot, Israel
| | - Efrat Hagai
- Flow Cytometry Unit, Department of Biological Services, Weizmann Institute, Rehovot, Israel
| | | | - Batia Avni
- Department of Bone Marrow Transplantation, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Sigal Grisariu
- Department of Bone Marrow Transplantation, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | | | | | - Eyal David
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Rony Shreberk-Hassidim
- Dermatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Vered Molho-Pessach
- Dermatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Dalit Amar
- Plastic Surgery Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Tomer Tzur
- Plastic Surgery Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Rottem Kuint
- Institue of Pulmonology Medicine, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Moshe Gross
- Orthopedic Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Oren Barboy
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Adi Moshe
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | | | - Dana Hirsch
- The Department of Veterinary Resources, Weizmann Institute, Rehovot, Israel
| | - Yoseph Addadi
- Life Sciences Core Facilities, Weizmann Institute, Rehovot, Israel
| | - Shlomit Erenfeld
- Department of Bone Marrow Transplantation, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Moshe Biton
- Department of Biological Regulation, Weizmann Institute, Rehovot, Israel
| | - Tehila Tzemach
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Anat Elazary
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Yaakov Naparstek
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Reut Tzemach
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel; Rheumatology Institute at the Tel Aviv Sourasky Medical Center, Tel Aviv-Yafo, Israel
| | - Assaf Weiner
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Amir Giladi
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Alexandra Balbir-Gurman
- Rheumatology Institute, Rambam Health Care Campus, Rappaport Faculty of Medicine, Technion-Israeli Institute of Technology, Haifa, Israel
| | - Ido Amit
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel.
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6
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Fellus-Alyagor L, Biton IE, Dafni H, Bochner F, Rotkopf R, Dekel N, Neeman M. Prediction of Ovarian Follicular Dominance by MRI Phenotyping of Hormonally Induced Vascular Remodeling. Front Med (Lausanne) 2021; 8:711810. [PMID: 34490300 PMCID: PMC8417579 DOI: 10.3389/fmed.2021.711810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/26/2021] [Indexed: 12/02/2022] Open
Abstract
In the mammalian female, only a small subset of ovarian follicles, known as the dominant follicles (DFs), are selected for ovulation in each reproductive cycle, while the majority of the follicles and their resident oocytes are destined for elimination. This study aimed at characterizing early changes in blood vessel properties upon the establishment of dominance in the mouse ovary and application of this vascular phenotype for prediction of the follicles destined to ovulate. Sexually immature mice, hormonally treated for induction of ovulation, were imaged at three different stages by dynamic contrast-enhanced (DCE) MRI: prior to hormonal administration, at the time of DF selection, and upon formation of the corpus luteum (CL). Macromolecular biotin-bovine serum albumin conjugated with gadolinium-diethylenetriaminepentaacetic acid (b-BSA-GdDTPA) was intravenously injected, and the dynamics of its extravasation from permeable vessels as well as its accumulation in the antral cavity of the ovarian follicles was followed by consecutive T1-weighted MRI. Permeability surface area product (permeability) and fractional blood volume (blood volume) were calculated from b-BSA-GdDTPA accumulation. We found that the neo-vasculature during the time of DF selection was characterized by low blood volume and low permeability values as compared to unstimulated animals. Interestingly, while the vasculature of the CL showed higher blood volume compared to the DF, it exhibited a similar permeability. Taking advantage of immobilized ovarian imaging, we combined DCE-MRI and intravital light microscopy, to reveal the vascular properties of follicles destined for dominance from the non-ovulating subordinate follicles (SFs). Immediately after their selection, permeability of the vasculature of DF was attenuated compared to SF while the blood volume remained similar. Furthermore, DFs were characterized by delayed contrast enhancement in the avascular follicular antrum, reflecting interstitial convection, whereas SFs were not. In this study, we showed that although DF selection is accompanied by blood vessel growth, the new vasculature remained relatively impermeable compared to the vasculature in control animal and compared to SF. Additionally, DFs show late signal enhancement in their antrum. These two properties may aid in clinical prediction of follicular dominance at an early stage of development and help in their diagnosis for possible treatment of infertility.
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Affiliation(s)
- Liat Fellus-Alyagor
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Inbal E Biton
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Hagit Dafni
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Filip Bochner
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Ron Rotkopf
- Department of Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Nava Dekel
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Michal Neeman
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
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7
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Abstract
The ovary is a dynamic organ that undergoes dramatic remodeling throughout the ovulatory cycle. Maturation of the ovarian follicle, release of the oocyte in the course of ovulation as well as formation and degradation of corpus luteum involve tightly controlled remodeling of the extracellular matrix and vasculature. Ovarian tumors, regardless of their tissue of origin, dynamically interact with the ovarian microenvironment. Their activity in the tissue encompasses recruitment of host stroma and immune cells, attachment of tumor cells to mesothelial layer, degradation of the extracellular matrix and tumor cell migration. High-resolution dynamic imaging of such processes is particularly challenging for internal organs. The implementation of a novel imaging window as reported here enabled longitudinal microscopy of ovarian physiology and orthotopic tumor invasion.
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Affiliation(s)
- Filip Bochner
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100 Israel
| | - Liat Fellus-Alyagor
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100 Israel
| | | | - Shiri Shinar
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100 Israel
| | - Michal Neeman
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100 Israel
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