{"title":"RNA comes close to copying itself","authors":"Robert F. Service","doi":"10.1126/science.aeg3559","DOIUrl":"10.1126/science.aeg3559","url":null,"abstract":"","PeriodicalId":21678,"journal":{"name":"Science","volume":"391 6786","pages":""},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dredging and mining river sediments can raise flood risks and threaten infrastructure, scientists say.
科学家说，疏浚和开采河流沉积物会增加洪水风险，并威胁到基础设施。
{"title":"Projects on silty Himalayan rivers raise alarms.","authors":"Athar Parvaiz","doi":"10.1126/science.aeg3558","DOIUrl":"https://doi.org/10.1126/science.aeg3558","url":null,"abstract":"<p><p>Dredging and mining river sediments can raise flood risks and threaten infrastructure, scientists say.</p>","PeriodicalId":21678,"journal":{"name":"Science","volume":"391 6786","pages":"644-645"},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146182050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Donia Arafa, Julia van de Korput, Philipp N. Braaker, Kieran P. Higgins, Niels R. C. Meijns, Katy L. H. Marshall-Phelps, Julia Meng, Daniel Soong, Eleonora Scalia, Kyle Lathem, Marcus Keatinge, Claire Richmond, Anna Klingseisen, Marja Main, Sarah A. Neely, David W. Hampton, Greg J. Duncan, Geert J. Schenk, Marie Louise Groot, Siddharthan Chandran, Ben Emery, Antonio Luchicchi, Maarten H. P. Kole, Anna C. Williams, David A. Lyons
Myelin damage is a hallmark of several neurological disorders, but how it occurs remains to be fully understood. In this study, we found that early damage in zebrafish and rodent demyelination models is characterized by myelin swelling. We show, through live imaging, that myelin swelling does not always lead to myelin loss and that swellings can sometimes resolve, allowing sheaths to remodel. Increased neuronal activity during early demyelination exacerbates myelin damage, whereas reducing neuronal activity mitigates myelin swelling in both zebrafish and mice. In human multiple sclerosis tissue, myelin swelling is also dynamic and is prominent around active lesions. Our data indicate that myelin swelling is a conserved feature of demyelination and that damage to myelin sheaths can resolve, opening opportunities for targeting human disease.
{"title":"Myelin sheaths in the central nervous system can withstand damage and dynamically remodel","authors":"Donia Arafa, Julia van de Korput, Philipp N. Braaker, Kieran P. Higgins, Niels R. C. Meijns, Katy L. H. Marshall-Phelps, Julia Meng, Daniel Soong, Eleonora Scalia, Kyle Lathem, Marcus Keatinge, Claire Richmond, Anna Klingseisen, Marja Main, Sarah A. Neely, David W. Hampton, Greg J. Duncan, Geert J. Schenk, Marie Louise Groot, Siddharthan Chandran, Ben Emery, Antonio Luchicchi, Maarten H. P. Kole, Anna C. Williams, David A. Lyons","doi":"10.1126/science.adr4661","DOIUrl":"10.1126/science.adr4661","url":null,"abstract":"<div >Myelin damage is a hallmark of several neurological disorders, but how it occurs remains to be fully understood. In this study, we found that early damage in zebrafish and rodent demyelination models is characterized by myelin swelling. We show, through live imaging, that myelin swelling does not always lead to myelin loss and that swellings can sometimes resolve, allowing sheaths to remodel. Increased neuronal activity during early demyelination exacerbates myelin damage, whereas reducing neuronal activity mitigates myelin swelling in both zebrafish and mice. In human multiple sclerosis tissue, myelin swelling is also dynamic and is prominent around active lesions. Our data indicate that myelin swelling is a conserved feature of demyelination and that damage to myelin sheaths can resolve, opening opportunities for targeting human disease.</div>","PeriodicalId":21678,"journal":{"name":"Science","volume":"391 6786","pages":""},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fangyuan Xiong, Zhongyang Li, Sébastien Brosse, Julian D. Olden, Steven J. Cooke, Bo Yang, Ying Lu, Wenqi Gao, Wei Xin, Yushun Chen
China’s rapid economic development has triggered an unparalleled freshwater biodiversity crisis since the 1950s. To restore fisheries resources, the Yangtze River Fishing Ban was implemented in 2021 to cease all basin-wide commercial fishing. We evaluate the effectiveness of this large-scale conservation action by assessing fish communities across mainstem habitats before and after the ban (2018 to 2023). The seven-decadal biodiversity loss was halted with improvements in fish biomass, body condition, species diversity, and initial recovery of threatened species. Eliminating fishing pressure was likely key to this recovery, in addition to actions targeting water quality improvement, hydrological and riparian habitat restoration, and vessel traffic reduction. Ambitious conservation actions can halt biodiversity loss in the Yangtze River, bringing hope for biodiversity recovery in other large rivers.
{"title":"Fishing ban halts seven decades of biodiversity decline in the Yangtze River","authors":"Fangyuan Xiong, Zhongyang Li, Sébastien Brosse, Julian D. Olden, Steven J. Cooke, Bo Yang, Ying Lu, Wenqi Gao, Wei Xin, Yushun Chen","doi":"10.1126/science.adu5160","DOIUrl":"10.1126/science.adu5160","url":null,"abstract":"<div >China’s rapid economic development has triggered an unparalleled freshwater biodiversity crisis since the 1950s. To restore fisheries resources, the Yangtze River Fishing Ban was implemented in 2021 to cease all basin-wide commercial fishing. We evaluate the effectiveness of this large-scale conservation action by assessing fish communities across mainstem habitats before and after the ban (2018 to 2023). The seven-decadal biodiversity loss was halted with improvements in fish biomass, body condition, species diversity, and initial recovery of threatened species. Eliminating fishing pressure was likely key to this recovery, in addition to actions targeting water quality improvement, hydrological and riparian habitat restoration, and vessel traffic reduction. Ambitious conservation actions can halt biodiversity loss in the Yangtze River, bringing hope for biodiversity recovery in other large rivers.</div>","PeriodicalId":21678,"journal":{"name":"Science","volume":"391 6786","pages":""},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nicholas M. Adams, Daniel Martinez-Krams, Eduardo Esteva, Ai C. Ra, Allegra Iliadi Alexiou, Hua Jin, Tae Jin Yun, Rayan Sleiman Tellaoui, Tenny Mudianto, Emily Vollmer, Ekaterina Novikova, Yanjun Tan, William Huntley, Oleg Krichevsky, Igor Dolgalev, Peter Izmirly, Jill P. Buyon, Andre L. Moreira, Amanda W. Lund, Boris Reizis
Dendritic cells (DCs) facilitate the maintenance of immunological tolerance in the steady state. We report that transcription factor Etv3 is preferentially expressed in mature DCs, including tissue-derived migratory DCs (migDCs), and facilitates their homeostatic maturation and CCR7-dependent migration. Mice with global or DC-specific deletion of Etv3 manifested the expansion of CD25low regulatory T (Treg) cells, spontaneous activation of conventional T cells, and multiorgan T cell infiltration. Etv3 deficiency exacerbated TLR7-driven systemic lupus erythematosus (SLE)–like disease, supporting the reported genetic association of human ETV3 with SLE. Etv3-deficient migDCs up-regulated multiple costimulatory molecules, including OX40 ligand (OX40L/TNFSF4), whose blockade partially rescued the Treg cell abnormalities. These results identify Etv3 as an essential regulator of the tolerogenic function of DCs and implicate it in the regulation of human autoimmunity.
{"title":"Transcription factor Etv3 controls the tolerogenic function of dendritic cells","authors":"Nicholas M. Adams, Daniel Martinez-Krams, Eduardo Esteva, Ai C. Ra, Allegra Iliadi Alexiou, Hua Jin, Tae Jin Yun, Rayan Sleiman Tellaoui, Tenny Mudianto, Emily Vollmer, Ekaterina Novikova, Yanjun Tan, William Huntley, Oleg Krichevsky, Igor Dolgalev, Peter Izmirly, Jill P. Buyon, Andre L. Moreira, Amanda W. Lund, Boris Reizis","doi":"10.1126/science.ads1246","DOIUrl":"10.1126/science.ads1246","url":null,"abstract":"<div >Dendritic cells (DCs) facilitate the maintenance of immunological tolerance in the steady state. We report that transcription factor Etv3 is preferentially expressed in mature DCs, including tissue-derived migratory DCs (migDCs), and facilitates their homeostatic maturation and CCR7-dependent migration. Mice with global or DC-specific deletion of Etv3 manifested the expansion of CD25<sup>low</sup> regulatory T (T<sub>reg</sub>) cells, spontaneous activation of conventional T cells, and multiorgan T cell infiltration. Etv3 deficiency exacerbated TLR7-driven systemic lupus erythematosus (SLE)–like disease, supporting the reported genetic association of human <i>ETV3</i> with SLE. Etv3-deficient migDCs up-regulated multiple costimulatory molecules, including OX40 ligand (OX40L/TNFSF4), whose blockade partially rescued the T<sub>reg</sub> cell abnormalities. These results identify Etv3 as an essential regulator of the tolerogenic function of DCs and implicate it in the regulation of human autoimmunity.</div>","PeriodicalId":21678,"journal":{"name":"Science","volume":"391 6786","pages":""},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Brenna C. Remick, Joshua Q. Mao, Andrew G. Manford, Ami D. Gutierrez-Jensen, Allon Wagner, Michael Rape, Grant McFadden, Masmudur M. Rahman, Moritz M. Gaidt, Russell E. Vance
Effector-triggered immunity (ETI) is a form of pathogen sensing that involves detection of pathogen-encoded virulence factors or “effectors.” To discover ETI pathways in mammals, we developed a screening approach in which we expressed individual virulence factors in a human monocyte cell line and assessed transcriptional responses by RNA sequencing. We identified a poxvirus effector, myxoma virus M3.1, which elicited an antiviral nuclear factor κB (NF-κB) response. NF-κB was unleashed by an ETI pathway that sensed M3.1 attack of two antiviral complexes: zinc finger antiviral protein and TBK1. NF-κΒ activation occurred because the proteins inhibited by M3.1—N4BP1, ZC3H12A, and TBK1—are negative regulators of NF-κB. Our study established a systematic approach for the discovery of ETI pathways, and the results illustrated how negative regulators of immune responses may function in pathogen sensing.
{"title":"Poxvirus attack of antiviral defense pathways unleashes an effector-triggered NF-κB response","authors":"Brenna C. Remick, Joshua Q. Mao, Andrew G. Manford, Ami D. Gutierrez-Jensen, Allon Wagner, Michael Rape, Grant McFadden, Masmudur M. Rahman, Moritz M. Gaidt, Russell E. Vance","doi":"10.1126/science.adw4937","DOIUrl":"10.1126/science.adw4937","url":null,"abstract":"<div >Effector-triggered immunity (ETI) is a form of pathogen sensing that involves detection of pathogen-encoded virulence factors or “effectors.” To discover ETI pathways in mammals, we developed a screening approach in which we expressed individual virulence factors in a human monocyte cell line and assessed transcriptional responses by RNA sequencing. We identified a poxvirus effector, myxoma virus M3.1, which elicited an antiviral nuclear factor κB (NF-κB) response. NF-κB was unleashed by an ETI pathway that sensed M3.1 attack of two antiviral complexes: zinc finger antiviral protein and TBK1. NF-κΒ activation occurred because the proteins inhibited by M3.1—N4BP1, ZC3H12A, and TBK1—are negative regulators of NF-κB. Our study established a systematic approach for the discovery of ETI pathways, and the results illustrated how negative regulators of immune responses may function in pathogen sensing.</div>","PeriodicalId":21678,"journal":{"name":"Science","volume":"391 6786","pages":""},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The nervous system must coordinate complex ensembles of electrical activity across great distances. To achieve this, specialized cells in the central nervous system called oligodendrocytes wrap the axons of neurons in an insulating membrane called myelin. Myelin increases the conduction velocity of electrical impulses and provides important metabolic support to the ensheathed axons (1). Because of these properties, myelination is critical for cognition, memory, movement, and perception. Myelin loss in disease states can cause severe neurological symptoms; however, the physiology underlying how various insults eventually progress to demyelination in disease contexts had not been well characterized in the central nervous system. On page 686 of this issue, Arafa et al. (2) report that damage to myelin initially causes swelling before leading to loss of myelin sheaths. They also demonstrate that swollen myelin can persist despite damage and can dynamically remodel to prevent sheath loss.
{"title":"Rest to repair","authors":"Kamsi Nwangwu, Michelle Monje","doi":"10.1126/science.aef0057","DOIUrl":"10.1126/science.aef0057","url":null,"abstract":"<div >The nervous system must coordinate complex ensembles of electrical activity across great distances. To achieve this, specialized cells in the central nervous system called oligodendrocytes wrap the axons of neurons in an insulating membrane called myelin. Myelin increases the conduction velocity of electrical impulses and provides important metabolic support to the ensheathed axons (<i>1</i>). Because of these properties, myelination is critical for cognition, memory, movement, and perception. Myelin loss in disease states can cause severe neurological symptoms; however, the physiology underlying how various insults eventually progress to demyelination in disease contexts had not been well characterized in the central nervous system. On page 686 of this issue, Arafa <i>et al</i>. (<i>2</i>) report that damage to myelin initially causes swelling before leading to loss of myelin sheaths. They also demonstrate that swollen myelin can persist despite damage and can dynamically remodel to prevent sheath loss.</div>","PeriodicalId":21678,"journal":{"name":"Science","volume":"391 6786","pages":""},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Donghwi Ko, Raili Ruonala, Alexandre Faille, Eva Hellmann, Hanna Help, Huili Liu, Ronni Nielsen, Anders Haakonsson, Nuria De Diego, Anja Paatero, Mariia V. Shcherbii, Karolina Stefanowicz, Sanja Ćavar Zeljković, Tine Drud Lundager Rasmussen, Ondrej Novak, Zsuzsanna Bodi, Gugan Eswaran, Brecht Wybouw, Matthieu Bourdon, Cristina Urbez, Xiaonan Liu, Kari Salokas, Tiina Öhman, Tanya Waldie, Petri Törönen, Sedeer el-Showk, Martin Balcerowicz, Fabrice Besnard, Xiaomin Liu, Patrick Perkins, Serina Mazzoni-Putman, Julia P. Vainonen, Maija Sierla, Mikko J. Frilander, Susanne Mandrup, Teva Vernoux, Karin Ljung, Alejandro Ferrando, Miguel A. Blazquez, Liisa Holm, Rupert Fray, Markku Varjosalo, Ottoline Leyser, Ville O. Paavilainen, Ari Pekka Mähönen, Anna Stepanova, Jose Alonso, Steffen Heber, Robert Malinowski, Finn Kirpekar, Alan J. Warren, Ykä Helariutta
Polyamines are often associated with ribosomes and are thought to stabilize their integrity. In Arabidopsis, the polyamine thermospermine (tSpm) affects xylem cell fate. tSpm induces translation of SUPPRESSOR-OF-ACAULIS51 (SAC51) and SAC51-LIKEs (SACLs), which inhibit heterodimerization of the xylem development proteins LONESOME-HIGHWAY (LHW) and TARGET-OF-MONOPTEROS5. Here, we report a methyltransferase, OVERACHIEVER, that methylates the peptidyl transferase center of the 25S ribosomal RNA (rRNA). Residue m3U2952 promotes functional tSpm binding to a specific site connecting the P-site transfer RNA (tRNA) with rRNA residues in the peptidyl transferase center. This interaction enhances the translation of SACLs but inhibits that of LHW. Our study uncovers the dependency between a conserved rRNA base methylation and a polyamine in orchestrating cell fate decisions, highlighting a role for the ribosome chemical landscape in translational regulation.
多胺常与核糖体结合，被认为能稳定核糖体的完整性。在拟南芥中，多胺热精胺（tSpm）影响木质部细胞命运。tSpm诱导acaulis51 SUPPRESSOR-OF-ACAULIS51 （SAC51）和SAC51- like （SACLs）的翻译，从而抑制木质部发育蛋白LONESOME-HIGHWAY （LHW）和TARGET-OF-MONOPTEROS5的异源二聚化。在这里，我们报道了一种甲基转移酶OVERACHIEVER，它使25S核糖体RNA （rRNA）的肽基转移酶中心甲基化。残基m3U2952促进功能性tSpm与肽基转移酶中心连接p -位点转移RNA （tRNA）和rRNA残基的特定位点结合。这种相互作用增强了sacl的翻译，抑制了LHW的翻译。我们的研究揭示了保守的rRNA碱基甲基化和多胺在协调细胞命运决定中的依赖关系，强调了核糖体化学景观在翻译调节中的作用。
{"title":"Recruitment of bifunctional regulator thermospermine to methylated ribosomes directs xylem fate","authors":"Donghwi Ko, Raili Ruonala, Alexandre Faille, Eva Hellmann, Hanna Help, Huili Liu, Ronni Nielsen, Anders Haakonsson, Nuria De Diego, Anja Paatero, Mariia V. Shcherbii, Karolina Stefanowicz, Sanja Ćavar Zeljković, Tine Drud Lundager Rasmussen, Ondrej Novak, Zsuzsanna Bodi, Gugan Eswaran, Brecht Wybouw, Matthieu Bourdon, Cristina Urbez, Xiaonan Liu, Kari Salokas, Tiina Öhman, Tanya Waldie, Petri Törönen, Sedeer el-Showk, Martin Balcerowicz, Fabrice Besnard, Xiaomin Liu, Patrick Perkins, Serina Mazzoni-Putman, Julia P. Vainonen, Maija Sierla, Mikko J. Frilander, Susanne Mandrup, Teva Vernoux, Karin Ljung, Alejandro Ferrando, Miguel A. Blazquez, Liisa Holm, Rupert Fray, Markku Varjosalo, Ottoline Leyser, Ville O. Paavilainen, Ari Pekka Mähönen, Anna Stepanova, Jose Alonso, Steffen Heber, Robert Malinowski, Finn Kirpekar, Alan J. Warren, Ykä Helariutta","doi":"10.1126/science.adx2867","DOIUrl":"10.1126/science.adx2867","url":null,"abstract":"<div >Polyamines are often associated with ribosomes and are thought to stabilize their integrity. In <i>Arabidopsis</i>, the polyamine thermospermine (tSpm) affects xylem cell fate. tSpm induces translation of SUPPRESSOR-OF-ACAULIS51 (SAC51) and SAC51-LIKEs (SACLs), which inhibit heterodimerization of the xylem development proteins LONESOME-HIGHWAY (LHW) and TARGET-OF-MONOPTEROS5. Here, we report a methyltransferase, OVERACHIEVER, that methylates the peptidyl transferase center of the 25<i>S</i> ribosomal RNA (rRNA). Residue m<sup>3</sup>U2952 promotes functional tSpm binding to a specific site connecting the P-site transfer RNA (tRNA) with rRNA residues in the peptidyl transferase center. This interaction enhances the translation of SACLs but inhibits that of LHW. Our study uncovers the dependency between a conserved rRNA base methylation and a polyamine in orchestrating cell fate decisions, highlighting a role for the ribosome chemical landscape in translational regulation.</div>","PeriodicalId":21678,"journal":{"name":"Science","volume":"391 6786","pages":""},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Erratum for the Research Article “Of the first five US states with food waste bans, Massachusetts alone has reduced landfill waste”","authors":"","doi":"10.1126/science.aef7764","DOIUrl":"10.1126/science.aef7764","url":null,"abstract":"","PeriodicalId":21678,"journal":{"name":"Science","volume":"391 6786","pages":""},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Han P Q Nguyen, Alexander J Maertens, Benjamin A Baker, Nathan M-W Wu, Zihao Ye, Qingyang Zhou, Qianfeng Qiu, Navneet Kaur, David B Berkinsky, Katherine E Shulenberger, K N Houk, Grace G D Han
Storing sunlight in a compact and rechargeable form remains a central challenge for solar energy utilization. Molecular solar thermal (MOST) energy storage systems, which harness photon energy and release it as heat on demand, provide a direct approach, but have long failed to meet practical benchmarks. Inspired by the architecture of DNA, we report a pyrimidone-based MOST system that stores energy in the strained Dewar photoisomer upon excitation at 300 nm. Designed with sustainability in mind, the system operates solvent-free and remains compatible with aqueous environments while overcoming one of the field's greatest hurdles: the controlled extraction and transfer of stored heat. When catalyzed by acid, the Dewar isomer releases enough heat to boil water (~0.5 mL). These advances help point the way toward decentralized solar heat storage and off-grid energy solutions.
{"title":"Molecular solar thermal energy storage in Dewar pyrimidone beyond 1.6 MJ/kg.","authors":"Han P Q Nguyen, Alexander J Maertens, Benjamin A Baker, Nathan M-W Wu, Zihao Ye, Qingyang Zhou, Qianfeng Qiu, Navneet Kaur, David B Berkinsky, Katherine E Shulenberger, K N Houk, Grace G D Han","doi":"10.1126/science.aec6413","DOIUrl":"https://doi.org/10.1126/science.aec6413","url":null,"abstract":"<p><p>Storing sunlight in a compact and rechargeable form remains a central challenge for solar energy utilization. Molecular solar thermal (MOST) energy storage systems, which harness photon energy and release it as heat on demand, provide a direct approach, but have long failed to meet practical benchmarks. Inspired by the architecture of DNA, we report a pyrimidone-based MOST system that stores energy in the strained Dewar photoisomer upon excitation at 300 nm. Designed with sustainability in mind, the system operates solvent-free and remains compatible with aqueous environments while overcoming one of the field's greatest hurdles: the controlled extraction and transfer of stored heat. When catalyzed by acid, the Dewar isomer releases enough heat to boil water (~0.5 mL). These advances help point the way toward decentralized solar heat storage and off-grid energy solutions.</p>","PeriodicalId":21678,"journal":{"name":"Science","volume":" ","pages":"eaec6413"},"PeriodicalIF":45.8,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146182068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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