{"title":"Elucidating molecular and cellular mechanisms of singularity phenomena in immunology.","authors":"Taku Okazaki, Tomoya Katakai","doi":"10.2142/biophysico.bppb-v21.s007","DOIUrl":"10.2142/biophysico.bppb-v21.s007","url":null,"abstract":"","PeriodicalId":101323,"journal":{"name":"Biophysics and physicobiology","volume":"21 Supplemental","pages":"e211007"},"PeriodicalIF":1.6,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11338679/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142034400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A battle between two biological singularities: Immune response vs. cancer.","authors":"Tomoya Katakai, Taku Okazaki","doi":"10.2142/biophysico.bppb-v21.s006","DOIUrl":"10.2142/biophysico.bppb-v21.s006","url":null,"abstract":"<p><p>In a post-growth multicellular organism, the phenomenon in which a small number of rare cells can be the starting point for inducing a dramatic change in the entire system is considered a \"biological singularity.\" The immune response and cancer can be regarded as singularity phenomena in mammals, but their nature is fundamentally different. The immune response is considered a \"programmed\" singularity, whereas cancer is an \"unprogrammed\" singularity. These two systems perpetually engage in a cycle of attack and defense within the organism. The outcome is depending on the wining system, which determines whether the individual experiences a state resembling light or darkness. However, the overall mechanism of the competition remains unclear and is expected to be elucidated with future innovations in bioimaging technologies. Immune checkpoint blockade therapy is a means by which the two singularity balances can be artificially manipulated; therefore, mechanistic insight is necessary for cancer treatment strategies. Altogether, these findings provide a different perspective crucial for understanding the behavior of dynamic cell populations in multicellular organisms.</p>","PeriodicalId":101323,"journal":{"name":"Biophysics and physicobiology","volume":"21 Supplemental","pages":"e211006"},"PeriodicalIF":1.6,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11338675/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142038665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integration of single-cell manipulation, whole transcriptome analysis, and image-based deep learning for studying \"Singularity Biology\".","authors":"Katsuyuki Shiroguchi","doi":"10.2142/biophysico.bppb-v21.s005","DOIUrl":"10.2142/biophysico.bppb-v21.s005","url":null,"abstract":"","PeriodicalId":101323,"journal":{"name":"Biophysics and physicobiology","volume":"21 Supplemental","pages":"e211005"},"PeriodicalIF":1.6,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11338686/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142034402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Current advances in the development of bioluminescent probes toward spatiotemporal trans-scale imaging.","authors":"Akihiro Sakama, Mariko Orioka, Yuki Hiruta","doi":"10.2142/biophysico.bppb-v21.s004","DOIUrl":"10.2142/biophysico.bppb-v21.s004","url":null,"abstract":"<p><p>Bioluminescence imaging has recently attracted great attention as a highly sensitive and non-invasive analytical method. However, weak signal and low chemical stability of the luciferin are conventional drawbacks of bioluminescence imaging. In this review article, we describe the recent progress on the development and applications of bioluminescent probes for overcoming the aforementioned limitations, thereby enabling spatiotemporal trans-scale imaging. The detailed molecular design for manipulation of their luminescent properties and functions enabled a variety of applications, including <i>in vivo</i> deep tissue imaging, long-term imaging, and chemical sensor.</p>","PeriodicalId":101323,"journal":{"name":"Biophysics and physicobiology","volume":"21 Supplemental","pages":"e211004"},"PeriodicalIF":1.6,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11338684/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142038669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Search for singularity cells at the onset of brain disorders using whole-brain imaging.","authors":"Hitoshi Hashimoto, Takanobu Nakazawa","doi":"10.2142/biophysico.bppb-v21.s003","DOIUrl":"10.2142/biophysico.bppb-v21.s003","url":null,"abstract":"","PeriodicalId":101323,"journal":{"name":"Biophysics and physicobiology","volume":"21 Supplemental","pages":"e211003"},"PeriodicalIF":1.6,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11338687/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142038675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pioneering artificial cell-like structures with DNA nanotechnology-based liquid-liquid phase separation.","authors":"Yusuke Sato, Masahiro Takinoue","doi":"10.2142/biophysico.bppb-v21.0010","DOIUrl":"10.2142/biophysico.bppb-v21.0010","url":null,"abstract":"<p><p>Recent studies have revealed that liquid-liquid phase separation (LLPS) plays crucial roles in various cellular functions. Droplets formed via LLPS within cells, often referred to as membraneless organelles, serve to concentrate specific molecules, thus enhancing biochemical reactions. Artificial LLPS systems have been utilized to construct synthetic cell models, employing a range of synthetic molecules. LLPS systems based on DNA nanotechnology are particularly notable for their designable characteristics in droplet formation, dynamics, properties, and functionalities. This review surveys recent advancements in DNA-based LLPS systems, underscoring the programmability afforded by DNA's base-pair specific interactions. We discuss the fundamentals of DNA droplet formation, including temperature-dependence and physical properties, along with the precise control achievable through sequence design. Attention is given to the phase separation of DNA nanostructures on two-dimensional closed interfaces, which results in spatial pattern formation at the interface. Furthermore, we spotlight the potential of DNA droplet computing for cancer diagnostics through specific microRNA pattern recognition. We envision that DNA-based LLPS presents a versatile platform for the exploration of cellular mimicry and opens innovative ways for the development of functional synthetic cells.</p>","PeriodicalId":101323,"journal":{"name":"Biophysics and physicobiology","volume":"21 1","pages":"e210010"},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128300/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141159213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Regulation of long-term memory by a few clock neurons in <i>Drosophila</i>.","authors":"Rei Shirakawa, Yuto Kurata, Takaomi Sakai","doi":"10.2142/biophysico.bppb-v21.s002","DOIUrl":"10.2142/biophysico.bppb-v21.s002","url":null,"abstract":"<p><p>Identification of the neural circuits in the brain regulating animal behavior and physiology is critical for understanding brain functions and is one of the most challenging goals in neuroscience research. The fruitfly <i>Drosophila melanogaster</i> has often been used to identify the neural circuits involved in the regulation of specific behaviors because of the many neurogenetic tools available to express target genes in particular neurons. Neurons controlling sexual behavior, feeding behavior, and circadian rhythms have been identified, and the number of neurons responsible for controlling these phenomena is small. The search for a few neurons controlling a specific behavior is an important first step to clarify the overall picture of the neural circuits regulating that behavior. We previously found that the clock gene <i>period</i> (<i>per</i>), which is essential for circadian rhythms in <i>Drosophila</i>, is also essential for long-term memory (LTM). We have also found that a very limited number of <i>per</i>-expressing clock neurons in the adult brain are required for the consolidation and maintenance of LTM. In this review, we focus on LTM in <i>Drosophila</i>, introduce the concept of LTM regulation by a few clock neurons that we have recently discovered, and discuss how a few clock neurons regulate <i>Drosophila</i> LTM.</p>","PeriodicalId":101323,"journal":{"name":"Biophysics and physicobiology","volume":"21 Supplemental","pages":"e211002"},"PeriodicalIF":1.6,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11338676/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142038673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Asian Biophysics Association: Reborn from the COVID-19 pandemic.","authors":"Shang-Te Danny Hsu","doi":"10.2142/biophysico.bppb-v21.0009","DOIUrl":"10.2142/biophysico.bppb-v21.0009","url":null,"abstract":"","PeriodicalId":101323,"journal":{"name":"Biophysics and physicobiology","volume":"21 1","pages":"e210009"},"PeriodicalIF":0.0,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128302/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141159269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}