--- _id: '10408' abstract: - lang: eng text: 'Key trees are often the best solution in terms of transmission cost and storage requirements for managing keys in a setting where a group needs to share a secret key, while being able to efficiently rotate the key material of users (in order to recover from a potential compromise, or to add or remove users). Applications include multicast encryption protocols like LKH (Logical Key Hierarchies) or group messaging like the current IETF proposal TreeKEM. A key tree is a (typically balanced) binary tree, where each node is identified with a key: leaf nodes hold users’ secret keys while the root is the shared group key. For a group of size N, each user just holds log(N) keys (the keys on the path from its leaf to the root) and its entire key material can be rotated by broadcasting 2log(N) ciphertexts (encrypting each fresh key on the path under the keys of its parents). In this work we consider the natural setting where we have many groups with partially overlapping sets of users, and ask if we can find solutions where the cost of rotating a key is better than in the trivial one where we have a separate key tree for each group. We show that in an asymptotic setting (where the number m of groups is fixed while the number N of users grows) there exist more general key graphs whose cost converges to the cost of a single group, thus saving a factor linear in the number of groups over the trivial solution. As our asymptotic “solution” converges very slowly and performs poorly on concrete examples, we propose an algorithm that uses a natural heuristic to compute a key graph for any given group structure. Our algorithm combines two greedy algorithms, and is thus very efficient: it first converts the group structure into a “lattice graph”, which is then turned into a key graph by repeatedly applying the algorithm for constructing a Huffman code. To better understand how far our proposal is from an optimal solution, we prove lower bounds on the update cost of continuous group-key agreement and multicast encryption in a symbolic model admitting (asymmetric) encryption, pseudorandom generators, and secret sharing as building blocks.' acknowledgement: B. Auerbach, M.A. Baig and K. Pietrzak—received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (682815 - TOCNeT); Karen Klein was supported in part by ERC CoG grant 724307 and conducted part of this work at IST Austria, funded by the ERC under the European Union’s Horizon 2020 research and innovation programme (682815 - TOCNeT); Guillermo Pascual-Perez was funded by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385; Michael Walter conducted part of this work at IST Austria, funded by the ERC under the European Union’s Horizon 2020 research and innovation programme (682815 - TOCNeT). alternative_title: - LNCS article_processing_charge: No author: - first_name: Joel F full_name: Alwen, Joel F id: 2A8DFA8C-F248-11E8-B48F-1D18A9856A87 last_name: Alwen - first_name: Benedikt full_name: Auerbach, Benedikt id: D33D2B18-E445-11E9-ABB7-15F4E5697425 last_name: Auerbach orcid: 0000-0002-7553-6606 - first_name: Mirza Ahad full_name: Baig, Mirza Ahad id: 3EDE6DE4-AA5A-11E9-986D-341CE6697425 last_name: Baig - first_name: Miguel full_name: Cueto Noval, Miguel id: ffc563a3-f6e0-11ea-865d-e3cce03d17cc last_name: Cueto Noval - first_name: Karen full_name: Klein, Karen id: 3E83A2F8-F248-11E8-B48F-1D18A9856A87 last_name: Klein - first_name: Guillermo full_name: Pascual Perez, Guillermo id: 2D7ABD02-F248-11E8-B48F-1D18A9856A87 last_name: Pascual Perez orcid: 0000-0001-8630-415X - first_name: Krzysztof Z full_name: Pietrzak, Krzysztof Z id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87 last_name: Pietrzak orcid: 0000-0002-9139-1654 - first_name: Michael full_name: Walter, Michael id: 488F98B0-F248-11E8-B48F-1D18A9856A87 last_name: Walter orcid: 0000-0003-3186-2482 citation: ama: 'Alwen JF, Auerbach B, Baig MA, et al. Grafting key trees: Efficient key management for overlapping groups. In: 19th International Conference. Vol 13044. Springer Nature; 2021:222-253. doi:10.1007/978-3-030-90456-2_8' apa: 'Alwen, J. F., Auerbach, B., Baig, M. A., Cueto Noval, M., Klein, K., Pascual Perez, G., … Walter, M. (2021). Grafting key trees: Efficient key management for overlapping groups. In 19th International Conference (Vol. 13044, pp. 222–253). Raleigh, NC, United States: Springer Nature. https://doi.org/10.1007/978-3-030-90456-2_8' chicago: 'Alwen, Joel F, Benedikt Auerbach, Mirza Ahad Baig, Miguel Cueto Noval, Karen Klein, Guillermo Pascual Perez, Krzysztof Z Pietrzak, and Michael Walter. “Grafting Key Trees: Efficient Key Management for Overlapping Groups.” In 19th International Conference, 13044:222–53. Springer Nature, 2021. https://doi.org/10.1007/978-3-030-90456-2_8.' ieee: 'J. F. Alwen et al., “Grafting key trees: Efficient key management for overlapping groups,” in 19th International Conference, Raleigh, NC, United States, 2021, vol. 13044, pp. 222–253.' ista: 'Alwen JF, Auerbach B, Baig MA, Cueto Noval M, Klein K, Pascual Perez G, Pietrzak KZ, Walter M. 2021. Grafting key trees: Efficient key management for overlapping groups. 19th International Conference. TCC: Theory of Cryptography, LNCS, vol. 13044, 222–253.' mla: 'Alwen, Joel F., et al. “Grafting Key Trees: Efficient Key Management for Overlapping Groups.” 19th International Conference, vol. 13044, Springer Nature, 2021, pp. 222–53, doi:10.1007/978-3-030-90456-2_8.' short: J.F. Alwen, B. Auerbach, M.A. Baig, M. Cueto Noval, K. Klein, G. Pascual Perez, K.Z. Pietrzak, M. Walter, in:, 19th International Conference, Springer Nature, 2021, pp. 222–253. conference: end_date: 2021-11-11 location: Raleigh, NC, United States name: 'TCC: Theory of Cryptography' start_date: 2021-11-08 date_created: 2021-12-05T23:01:42Z date_published: 2021-11-04T00:00:00Z date_updated: 2023-08-14T13:19:39Z day: '04' department: - _id: KrPi doi: 10.1007/978-3-030-90456-2_8 ec_funded: 1 external_id: isi: - '000728363700008' intvolume: ' 13044' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://eprint.iacr.org/2021/1158 month: '11' oa: 1 oa_version: Preprint page: 222-253 project: - _id: 258AA5B2-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '682815' name: Teaching Old Crypto New Tricks - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication: 19th International Conference publication_identifier: eisbn: - 978-3-030-90456-2 eissn: - 1611-3349 isbn: - 9-783-0309-0455-5 issn: - 0302-9743 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: 'Grafting key trees: Efficient key management for overlapping groups' type: conference user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 13044 year: '2021' ... --- _id: '10527' abstract: - lang: eng text: We show that in a two-dimensional electron gas with an annular Fermi surface, long-range Coulomb interactions can lead to unconventional superconductivity by the Kohn-Luttinger mechanism. Superconductivity is strongly enhanced when the inner and outer Fermi surfaces are close to each other. The most prevalent state has chiral p-wave symmetry, but d-wave and extended s-wave pairing are also possible. We discuss these results in the context of rhombohedral trilayer graphene, where superconductivity was recently discovered in regimes where the normal state has an annular Fermi surface. Using realistic parameters, our mechanism can account for the order of magnitude of Tc, as well as its trends as a function of electron density and perpendicular displacement field. Moreover, it naturally explains some of the outstanding puzzles in this material, that include the weak temperature dependence of the resistivity above Tc, and the proximity of spin singlet superconductivity to the ferromagnetic phase. acknowledgement: We thank Yang-Zhi Chou, Andrey Chubukov, Johannes Hofmann, Steve Kivelson, Sri Raghu, and Sankar das Sarma, Jay Sau, Fengcheng Wu, and Andrea Young for many stimulating discussions and for their comments on the manuscript. E.B. thanks S. Chatterjee, T. Wang, and M. Zaletel for a collaboration on a related topic. A.G. acknowledges support by the European Unions Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement No. 754411. E.B. and T.H. were supported by the European Research Council (ERC) under grant HQMAT (Grant Agreement No. 817799), by the Israel-USA Binational Science Foundation (BSF), and by a Research grant from Irving and Cherna Moskowitz. article_number: '247001' article_processing_charge: No article_type: original author: - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Tobias full_name: Holder, Tobias last_name: Holder - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Erez full_name: Berg, Erez last_name: Berg citation: ama: 'Ghazaryan A, Holder T, Serbyn M, Berg E. Unconventional superconductivity in systems with annular Fermi surfaces: Application to rhombohedral trilayer graphene. Physical Review Letters. 2021;127(24). doi:10.1103/physrevlett.127.247001' apa: 'Ghazaryan, A., Holder, T., Serbyn, M., & Berg, E. (2021). Unconventional superconductivity in systems with annular Fermi surfaces: Application to rhombohedral trilayer graphene. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.127.247001' chicago: 'Ghazaryan, Areg, Tobias Holder, Maksym Serbyn, and Erez Berg. “Unconventional Superconductivity in Systems with Annular Fermi Surfaces: Application to Rhombohedral Trilayer Graphene.” Physical Review Letters. American Physical Society, 2021. https://doi.org/10.1103/physrevlett.127.247001.' ieee: 'A. Ghazaryan, T. Holder, M. Serbyn, and E. Berg, “Unconventional superconductivity in systems with annular Fermi surfaces: Application to rhombohedral trilayer graphene,” Physical Review Letters, vol. 127, no. 24. American Physical Society, 2021.' ista: 'Ghazaryan A, Holder T, Serbyn M, Berg E. 2021. Unconventional superconductivity in systems with annular Fermi surfaces: Application to rhombohedral trilayer graphene. Physical Review Letters. 127(24), 247001.' mla: 'Ghazaryan, Areg, et al. “Unconventional Superconductivity in Systems with Annular Fermi Surfaces: Application to Rhombohedral Trilayer Graphene.” Physical Review Letters, vol. 127, no. 24, 247001, American Physical Society, 2021, doi:10.1103/physrevlett.127.247001.' short: A. Ghazaryan, T. Holder, M. Serbyn, E. Berg, Physical Review Letters 127 (2021). date_created: 2021-12-10T07:51:33Z date_published: 2021-12-09T00:00:00Z date_updated: 2023-08-14T13:19:13Z day: '09' department: - _id: MaSe doi: 10.1103/physrevlett.127.247001 ec_funded: 1 external_id: arxiv: - '2109.00011' isi: - '000923819400004' intvolume: ' 127' isi: 1 issue: '24' keyword: - general physics and astronomy language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2109.00011 month: '12' oa: 1 oa_version: Preprint project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News on IST Webpage relation: press_release url: https://ist.ac.at/en/news/resolving-the-puzzles-of-graphene-superconductivity/ scopus_import: '1' status: public title: 'Unconventional superconductivity in systems with annular Fermi surfaces: Application to rhombohedral trilayer graphene' type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 127 year: '2021' ... --- _id: '10534' abstract: - lang: eng text: For many years, fullerene derivatives have been the main n-type material of organic electronics and optoelectronics. Recently, fullerene derivatives functionalized with ethylene glycol (EG) side chains have been showing important properties such as enhanced dielectric constants, facile doping and enhanced self-assembly capabilities. Here, we have prepared field-effect transistors using a series of these fullerene derivatives equipped with EG side chains of different lengths. Transport data show the beneficial effect of increasing the EG side chain. In order to understand the material properties, full structural determination of these fullerene derivatives has been achieved by coupling the X-ray data with molecular dynamics (MD) simulations. The increase in transport properties is paired with the formation of extended layered structures, efficient molecular packing and an increase in the crystallite alignment. The layer-like structure is composed of conducting layers, containing of closely packed C60 balls approaching the inter-distance of 1 nm, that are separated by well-defined EG layers, where the EG chains are rather splayed with the chain direction almost perpendicular to the layer normal. Such a layered structure appears highly ordered and highly aligned with the C60 planes oriented parallel to the substrate in the thin film configuration. The order inside the thin film increases with the EG chain length, allowing the systems to achieve mobilities as high as 0.053 cm2 V−1 s−1. Our work elucidates the structure of these interesting semiconducting organic molecules and shows that the synergistic use of X-ray structural analysis and MD simulations is a powerful tool to identify the structure of thin organic films for optoelectronic applications. acknowledgement: J. D. gratefully acknowledges the China Scholarship Council (CSC No. 201606340158) for supporting his PhD studies. S. S. thanks J. Antoja-Lleonart for insightful discussions on simulating the X-ray diffraction patterns. Part of the work was sponsored by NWO Exact and Natural Sciences for the use of supercomputer facilities (Contract no. 17197 7095). Regarding S. S., R. A., R. W. A. H., J. C. H., and M. A. L., this is a publication by the FOM Focus Group “Next Generation Organic Photovoltaics”, participating in the Dutch Institute for Fundamental Energy Research (DIFFER). The ESRF is acknowledged for providing the beamtime. J. D. and G. P. are grateful to the BM26B staff for their great support during the beamtime. M. A. L., D. M. B. are grateful for the financial support of the European Research Council via a Starting Grant (HySPOD, No. 306983). article_processing_charge: No article_type: original author: - first_name: Jingjin full_name: Dong, Jingjin last_name: Dong - first_name: Selim full_name: Sami, Selim last_name: Sami - first_name: Daniel full_name: Balazs, Daniel id: 302BADF6-85FC-11EA-9E3B-B9493DDC885E last_name: Balazs orcid: 0000-0001-7597-043X - first_name: Riccardo full_name: Alessandri, Riccardo last_name: Alessandri - first_name: Fatimeh full_name: Jahani, Fatimeh last_name: Jahani - first_name: Li full_name: Qiu, Li last_name: Qiu - first_name: Siewert J. full_name: Marrink, Siewert J. last_name: Marrink - first_name: Remco W.A. full_name: Havenith, Remco W.A. last_name: Havenith - first_name: Jan C. full_name: Hummelen, Jan C. last_name: Hummelen - first_name: Maria A. full_name: Loi, Maria A. last_name: Loi - first_name: Giuseppe full_name: Portale, Giuseppe last_name: Portale citation: ama: 'Dong J, Sami S, Balazs D, et al. Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties. Journal of Materials Chemistry C. 2021;9(45):16217-16225. doi:10.1039/d1tc02753k' apa: 'Dong, J., Sami, S., Balazs, D., Alessandri, R., Jahani, F., Qiu, L., … Portale, G. (2021). Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties. Journal of Materials Chemistry C. Royal Society of Chemistry. https://doi.org/10.1039/d1tc02753k' chicago: 'Dong, Jingjin, Selim Sami, Daniel Balazs, Riccardo Alessandri, Fatimeh Jahani, Li Qiu, Siewert J. Marrink, et al. “Fullerene Derivatives with Oligoethylene-Glycol Side Chains: An Investigation on the Origin of Their Outstanding Transport Properties.” Journal of Materials Chemistry C. Royal Society of Chemistry, 2021. https://doi.org/10.1039/d1tc02753k.' ieee: 'J. Dong et al., “Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties,” Journal of Materials Chemistry C, vol. 9, no. 45. Royal Society of Chemistry, pp. 16217–16225, 2021.' ista: 'Dong J, Sami S, Balazs D, Alessandri R, Jahani F, Qiu L, Marrink SJ, Havenith RWA, Hummelen JC, Loi MA, Portale G. 2021. Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties. Journal of Materials Chemistry C. 9(45), 16217–16225.' mla: 'Dong, Jingjin, et al. “Fullerene Derivatives with Oligoethylene-Glycol Side Chains: An Investigation on the Origin of Their Outstanding Transport Properties.” Journal of Materials Chemistry C, vol. 9, no. 45, Royal Society of Chemistry, 2021, pp. 16217–25, doi:10.1039/d1tc02753k.' short: J. Dong, S. Sami, D. Balazs, R. Alessandri, F. Jahani, L. Qiu, S.J. Marrink, R.W.A. Havenith, J.C. Hummelen, M.A. Loi, G. Portale, Journal of Materials Chemistry C 9 (2021) 16217–16225. date_created: 2021-12-12T23:01:27Z date_published: 2021-12-07T00:00:00Z date_updated: 2023-08-17T06:18:44Z day: '07' ddc: - '540' department: - _id: MaIb doi: 10.1039/d1tc02753k external_id: isi: - '000688135700001' file: - access_level: open_access checksum: 6b73c214ce54a6894a5854b4364413d7 content_type: application/pdf creator: cchlebak date_created: 2021-12-13T09:24:42Z date_updated: 2021-12-13T09:24:42Z file_id: '10538' file_name: 2021_JMaterChemC_Dong.pdf file_size: 4979390 relation: main_file success: 1 file_date_updated: 2021-12-13T09:24:42Z has_accepted_license: '1' intvolume: ' 9' isi: 1 issue: '45' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '12' oa: 1 oa_version: Published Version page: 16217-16225 publication: Journal of Materials Chemistry C publication_identifier: eissn: - 2050-7526 issn: - 2050-7534 publication_status: published publisher: Royal Society of Chemistry quality_controlled: '1' scopus_import: '1' status: public title: 'Fullerene derivatives with oligoethylene-glycol side chains: An investigation on the origin of their outstanding transport properties' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 9 year: '2021' ... --- _id: '10533' abstract: - lang: eng text: Flowering plants utilize small RNA molecules to guide DNA methyltransferases to genomic sequences. This RNA-directed DNA methylation (RdDM) pathway preferentially targets euchromatic transposable elements. However, RdDM is thought to be recruited by methylation of histone H3 at lysine 9 (H3K9me), a hallmark of heterochromatin. How RdDM is targeted to euchromatin despite an affinity for H3K9me is unclear. Here we show that loss of histone H1 enhances heterochromatic RdDM, preferentially at nucleosome linker DNA. Surprisingly, this does not require SHH1, the RdDM component that binds H3K9me. Furthermore, H3K9me is dispensable for RdDM, as is CG DNA methylation. Instead, we find that non-CG methylation is specifically associated with small RNA biogenesis, and without H1 small RNA production quantitatively expands to non-CG methylated loci. Our results demonstrate that H1 enforces the separation of euchromatic and heterochromatic DNA methylation pathways by excluding the small RNA-generating branch of RdDM from non-CG methylated heterochromatin. acknowledgement: We thank X Feng for helpful comments on the manuscript. This work was supported by a European Research Council grant MaintainMeth (725746) to DZ. article_number: e72676 article_processing_charge: No article_type: original author: - first_name: Jaemyung full_name: Choi, Jaemyung last_name: Choi - first_name: David B full_name: Lyons, David B last_name: Lyons - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 citation: ama: Choi J, Lyons DB, Zilberman D. Histone H1 prevents non-CG methylation-mediated small RNA biogenesis in Arabidopsis heterochromatin. eLife. 2021;10. doi:10.7554/elife.72676 apa: Choi, J., Lyons, D. B., & Zilberman, D. (2021). Histone H1 prevents non-CG methylation-mediated small RNA biogenesis in Arabidopsis heterochromatin. ELife. eLife Sciences Publications. https://doi.org/10.7554/elife.72676 chicago: Choi, Jaemyung, David B Lyons, and Daniel Zilberman. “Histone H1 Prevents Non-CG Methylation-Mediated Small RNA Biogenesis in Arabidopsis Heterochromatin.” ELife. eLife Sciences Publications, 2021. https://doi.org/10.7554/elife.72676. ieee: J. Choi, D. B. Lyons, and D. Zilberman, “Histone H1 prevents non-CG methylation-mediated small RNA biogenesis in Arabidopsis heterochromatin,” eLife, vol. 10. eLife Sciences Publications, 2021. ista: Choi J, Lyons DB, Zilberman D. 2021. Histone H1 prevents non-CG methylation-mediated small RNA biogenesis in Arabidopsis heterochromatin. eLife. 10, e72676. mla: Choi, Jaemyung, et al. “Histone H1 Prevents Non-CG Methylation-Mediated Small RNA Biogenesis in Arabidopsis Heterochromatin.” ELife, vol. 10, e72676, eLife Sciences Publications, 2021, doi:10.7554/elife.72676. short: J. Choi, D.B. Lyons, D. Zilberman, ELife 10 (2021). date_created: 2021-12-10T13:12:08Z date_published: 2021-12-01T00:00:00Z date_updated: 2023-08-17T06:21:08Z day: '01' ddc: - '570' department: - _id: DaZi doi: 10.7554/elife.72676 ec_funded: 1 external_id: isi: - '000754832000001' pmid: - '34850679' file: - access_level: open_access checksum: 22ed4c55fb550f6da02ae55c359be651 content_type: application/pdf creator: dernst date_created: 2022-05-16T10:42:22Z date_updated: 2022-05-16T10:42:22Z file_id: '11384' file_name: 2021_eLife_Choi.pdf file_size: 2715200 relation: main_file success: 1 file_date_updated: 2022-05-16T10:42:22Z has_accepted_license: '1' intvolume: ' 10' isi: 1 keyword: - genetics and molecular biology language: - iso: eng month: '12' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 62935a00-2b32-11ec-9570-eff30fa39068 call_identifier: H2020 grant_number: '725746' name: Quantitative analysis of DNA methylation maintenance with chromatin publication: eLife publication_identifier: issn: - 2050-084X publication_status: published publisher: eLife Sciences Publications quality_controlled: '1' scopus_import: '1' status: public title: Histone H1 prevents non-CG methylation-mediated small RNA biogenesis in Arabidopsis heterochromatin tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 10 year: '2021' ... --- _id: '10536' abstract: - lang: eng text: TGFβ overexpression is commonly detected in cancer patients and correlates with poor prognosis and metastasis. Cancer progression is often associated with an enhanced recruitment of myeloid-derived cells to the tumor microenvironment. Here we show that functional TGFβ-signaling in myeloid cells is required for metastasis to the lungs and the liver. Myeloid-specific deletion of Tgfbr2 resulted in reduced spontaneous lung metastasis, which was associated with a reduction of proinflammatory cytokines in the metastatic microenvironment. Notably, CD8+ T cell depletion in myeloid-specific Tgfbr2-deficient mice rescued lung metastasis. Myeloid-specific Tgfbr2-deficiency resulted in reduced liver metastasis with an almost complete absence of myeloid cells within metastatic foci. On contrary, an accumulation of Tgfβ-responsive myeloid cells was associated with an increased recruitment of monocytes and granulocytes and higher proinflammatory cytokine levels in control mice. Monocytic cells isolated from metastatic livers of Tgfbr2-deficient mice showed increased polarization towards the M1 phenotype, Tnfα and Il-1β expression, reduced levels of M2 markers and reduced production of chemokines responsible for myeloid-cell recruitment. No significant differences in Tgfβ levels were observed at metastatic sites of any model. These data demonstrate that Tgfβ signaling in monocytic myeloid cells suppresses CD8+ T cell activity during lung metastasis, while these cells actively contribute to tumor growth during liver metastasis. Thus, myeloid cells modulate metastasis through different mechanisms in a tissue-specific manner. acknowledgement: The authors acknowledge the assistance of the Laboratory Animal Services Center (LASC) – UZH, Center for Microscopy and Image Analysis, and the Flow Cytometry Center of the University of Zurich. article_number: '765151' article_processing_charge: No article_type: original author: - first_name: Cristina full_name: Stefanescu, Cristina last_name: Stefanescu - first_name: Merel full_name: Van Gogh, Merel last_name: Van Gogh - first_name: Marko full_name: Roblek, Marko id: 3047D808-F248-11E8-B48F-1D18A9856A87 last_name: Roblek orcid: 0000-0001-9588-1389 - first_name: Mathias full_name: Heikenwalder, Mathias last_name: Heikenwalder - first_name: Lubor full_name: Borsig, Lubor last_name: Borsig citation: ama: Stefanescu C, Van Gogh M, Roblek M, Heikenwalder M, Borsig L. TGFβ signaling in myeloid cells promotes lung and liver metastasis through different mechanisms. Frontiers in Oncology. 2021;11. doi:10.3389/fonc.2021.765151 apa: Stefanescu, C., Van Gogh, M., Roblek, M., Heikenwalder, M., & Borsig, L. (2021). TGFβ signaling in myeloid cells promotes lung and liver metastasis through different mechanisms. Frontiers in Oncology. Frontiers. https://doi.org/10.3389/fonc.2021.765151 chicago: Stefanescu, Cristina, Merel Van Gogh, Marko Roblek, Mathias Heikenwalder, and Lubor Borsig. “TGFβ Signaling in Myeloid Cells Promotes Lung and Liver Metastasis through Different Mechanisms.” Frontiers in Oncology. Frontiers, 2021. https://doi.org/10.3389/fonc.2021.765151. ieee: C. Stefanescu, M. Van Gogh, M. Roblek, M. Heikenwalder, and L. Borsig, “TGFβ signaling in myeloid cells promotes lung and liver metastasis through different mechanisms,” Frontiers in Oncology, vol. 11. Frontiers, 2021. ista: Stefanescu C, Van Gogh M, Roblek M, Heikenwalder M, Borsig L. 2021. TGFβ signaling in myeloid cells promotes lung and liver metastasis through different mechanisms. Frontiers in Oncology. 11, 765151. mla: Stefanescu, Cristina, et al. “TGFβ Signaling in Myeloid Cells Promotes Lung and Liver Metastasis through Different Mechanisms.” Frontiers in Oncology, vol. 11, 765151, Frontiers, 2021, doi:10.3389/fonc.2021.765151. short: C. Stefanescu, M. Van Gogh, M. Roblek, M. Heikenwalder, L. Borsig, Frontiers in Oncology 11 (2021). date_created: 2021-12-12T23:01:27Z date_published: 2021-11-18T00:00:00Z date_updated: 2023-08-17T06:20:32Z day: '18' ddc: - '610' department: - _id: DaSi doi: 10.3389/fonc.2021.765151 external_id: isi: - '000726603400001' pmid: - '34868988' file: - access_level: open_access checksum: 56cbac80e6891ce750511a30161b7792 content_type: application/pdf creator: alisjak date_created: 2021-12-13T13:32:37Z date_updated: 2021-12-13T13:32:37Z file_id: '10539' file_name: 2021_Frontiers_Stefanescu.pdf file_size: 9245199 relation: main_file success: 1 file_date_updated: 2021-12-13T13:32:37Z has_accepted_license: '1' intvolume: ' 11' isi: 1 language: - iso: eng month: '11' oa: 1 oa_version: Published Version pmid: 1 publication: Frontiers in Oncology publication_identifier: eissn: - 2234-943X publication_status: published publisher: Frontiers quality_controlled: '1' scopus_import: '1' status: public title: TGFβ signaling in myeloid cells promotes lung and liver metastasis through different mechanisms tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 11 year: '2021' ...