{"title":"Comprehensive analysis of the lipid composition in Saccharomyces cerevisiae, Saccharomyces eubayanus, and Saccharomyces pastorianus grown at different temperatures by untargeted lipidomics.","authors":"Tomoko Takahashi, Ryo Iwama, Nobuyuki Okahashi, Fumio Matsuda, Ryouichi Fukuda, Ryo Nakasato, Yoichi Noda","doi":"10.1093/bbb/zbag067","DOIUrl":"https://doi.org/10.1093/bbb/zbag067","url":null,"abstract":"<p><p>The brewer's yeast Saccharomyces pastorianus originated as a hybrid between the mesophilic yeast Saccharomyces cerevisiae and cryotolerant yeast Saccharomyces eubayanus. In this study, we investigated temperature-dependent changes in lipid composition in three yeast species using untargeted lipidomics. We found that both S. cerevisiae and S. pastorianus accumulated storage lipids, particularly triacylglycerols (TG), as the temperature decreased, whereas TG levels in S. eubayanus showed slight temperature-dependent changes. Mitochondria-associated lipids, such as cardiolipin (CL) and its precursor phosphatidylglycerol, also exhibited species-specific patterns. In particular, S. cerevisiae and S. eubayanus differed in their regulatory modes of fatty acid desaturation in CL. The acyl chain composition of CL in S. pastorianus was biased toward the characteristics of S. eubayanus. Our findings show that S. pastorianus integrates parental lipid regulatory systems in a lipid class-specific manner, combining S. cerevisiae-like regulation of storage lipids with S. eubayanus-like control of mitochondrial membrane lipids.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147833703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Takato Hirata, Koki Obai, Miki Kubo, Yuichiro Ikagawa, Hitoshi Iwahashi
{"title":"Isolation and Characterization of a Salt- and Oxygen-Tolerant Bifidobacterium from Kishu-Narezushi.","authors":"Takato Hirata, Koki Obai, Miki Kubo, Yuichiro Ikagawa, Hitoshi Iwahashi","doi":"10.1093/bbb/zbag062","DOIUrl":"https://doi.org/10.1093/bbb/zbag062","url":null,"abstract":"<p><p>Bifidobacterium psychraerophilum was isolated from Kishu-Narezushi, marking the first discovery of the Bifidobacterium species originating from a spontaneously fermented traditional Japanese food. Kishu-Narezushi is a traditional Japanese spontaneously fermented food composed of fish, rice, and salt. Typically, Bifidobacterium species are isolated from milk-related fermented foods or human intestines. The isolated strain was identified as B. psychraerophilum and named the Yasuke strain. B. psychraerophilum are closely related with Bifidobacterium aquikeferi and Bifidobacterium crudilactis. The Yasuke strain and Bifidobacterium psychraerophilum DSM 22366 exhibited greater resistant to salt and oxygen compared to other Bifidobacterium species. Draft genome analysis of the Yasuke strain and four other B. psychraerophilum strains indicates the presence of stress tolerance-related genes. Superoxide dismutase [Mn] and glutathione peroxidase genes are observed in this species. Genes involved in phage interactions, proline metabolism, and sugar and amino acid transport were uniquely identified in the Yasuke strain.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147762623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Metabolic Flux Control Enhances Intracellular Biosynthesis of Fumagillin Derivatives in Human Cells.","authors":"Shinya Matsuda","doi":"10.1093/bbb/zbag061","DOIUrl":"https://doi.org/10.1093/bbb/zbag061","url":null,"abstract":"<p><p>Intracellular biosynthesis of natural products in human cells represents a promising strategy for functional drug delivery. Here we engineered production of fumagillin metabolites in human cells expressing fungal cytochrome P450 Fma-P450. In endothelial-derived EA.hy926 cells, metabolic flux optimization enhanced metabolite production and enabled detection of cytotoxic activity.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147762610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"This review was written in response to the author's receipt of the JSBBA Award in 2024.","authors":"Koji Uchida","doi":"10.1093/bbb/zbag060","DOIUrl":"https://doi.org/10.1093/bbb/zbag060","url":null,"abstract":"<p><p>For nearly 40 years, from my student days to the present, I have been engaged in research primarily at my alma mater, Nagoya University; at the National Institutes of Health (N.I.H.) in the United States, where I served as a postdoctoral fellow; and at the University of Tokyo, where I am currently affiliated. At each of these institutions, I have consistently focused on research themes related to the chemical reactions underlying biological phenomena associated with food and health, with a particular emphasis on covalent protein modifications induced by reactive species. This research has become the lifelong theme to which I have dedicated my career.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147762724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mitochondrial NADP+-isocitrate dehydrogenase Idp1 involves CoQ biosynthesis in parallel with NAD kinase Pos5.","authors":"Shogo Nishihara, Yasuhiro Matsuo, Makoto Kawamukai","doi":"10.1093/bbb/zbag059","DOIUrl":"https://doi.org/10.1093/bbb/zbag059","url":null,"abstract":"<p><p>Mitochondrial NADPH is synthesized by isocitrate dehydrogenase (Idp1) from NADP+ and NAD kinase (Pos5) from NADH. Coenzyme Q levels in Schizosaccharomyces pombe were decreased by deletion of idp1 and further lowered by deletion of pos5. The NADP+/NADPH ratio of the ∆idp1 strain shifted to an oxidized state. The mitochondrial NADPH pool and its redox state are critical for CoQ biosynthesis.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147762674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"De novo biosynthesis of phenylpyruvic acid by engineered Escherichia coli.","authors":"Xiaobing Yang, Chengbin Wang, Jingxin Yin, Jinli Wang, Dongxu Zhao, Jing Zhang, Haijun Gao","doi":"10.1093/bbb/zbag050","DOIUrl":"https://doi.org/10.1093/bbb/zbag050","url":null,"abstract":"<p><p>Phenylpyruvic acid is a high-value α-keto acid with broad applications in pharmaceutical and chemical industries. Traditional production via chemical synthesis or transaminase-mediated L-phenylalanine conversion is limited by cost and environmental concerns. Four biosynthetic schemes for phenylpyruvic acid production were evaluated. In scheme a, growing cells converted shikimic acid to phenylpyruvic acid, yielding 0.15 g/L. In scheme b, major transaminases were deleted in an L-phenylalanine producing strain, yielding 0.21 g/L PPA. In scheme c, a \"shuttle-run\" strategy was applied, with a temperature sensitive pR promoter regulating membrane-associated L-amino acid deaminase, achieving 0.98 g/L. Finally (scheme d), a dual strain \"fermentation-enzyme biocatalysis\" coupled system combined WP-06-1 with W-03-3, decoupling precursor accumulation from enzymatic conversion and producing 10.21 g/L phenylpyruvic acid, the highest reported from glucose without exogenous L-phenylalanine, providing an efficient and sustainable platform for phenylpyruvic acid biomanufacturing.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147762640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High-resolution profiling for the composition of various peptones by multimodal targeting analysis.","authors":"Takuto Nakajima, Kazuki Watanabe, Tomoko Kagenishi, Masaaki Konishi","doi":"10.1093/bbb/zbag023","DOIUrl":"10.1093/bbb/zbag023","url":null,"abstract":"<p><p>Peptone is a promising raw material for culturing microorganisms and mammalian cells, but its composition remains unclear. Here, 36 different peptones were comprehensively quantified using five approaches: gas chromatography/tandem mass spectrometry, liquid chromatography/mass spectrometry, ion chromatography, postcolumn detection-high-performance liquid chromatography, and inductively coupled plasma mass spectrometry (named multimodal targeting analysis). Seventy-eight chemical compounds/ions were detected among 121 targets, including amino acids, nucleic acids, organic acids, sugars, vitamins, and minerals. The sum of the quantitated component weights exceeded 65% of the total weight in all cases (mean 88%). Principal component and cluster dendrogram analyses revealed clear distinctions between not only peptone brands but also production lots. Plant peptones exhibited greater variety than casein and meat peptones. Partial least squares analysis identified components specific to particular manufacturing processes and peptone sources. Acid-digested peptones contained more free amino acids, including Ala, Cys, Gly, Thr, Ser, Asp, Glu, and Pro, than enzyme-digested types.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":"702-710"},"PeriodicalIF":1.3,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146123800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fumika Yokoyama, Riho Yamada, Hiromichi Yamazaki, Honoka Maeda, Satoshi Ishizuka
{"title":"An acute increase in systemic bile acid levels in rats treated with tunicamycin.","authors":"Fumika Yokoyama, Riho Yamada, Hiromichi Yamazaki, Honoka Maeda, Satoshi Ishizuka","doi":"10.1093/bbb/zbag031","DOIUrl":"10.1093/bbb/zbag031","url":null,"abstract":"<p><p>We investigated whether an endoplasmic reticulum (ER) stress-inducing chemical tunicamycin (TM) modulates bile acid (BA) metabolism in rats. Male Wistar rats were intraperitoneally administered TM at 0.1 mg/kg body weight or vehicle, and samples were collected 2 days post-treatment. TM administration induced the levels of hepatic ER stress-related proteins. Increases were observed in both 12-hydroxylated and non-12-hydroxylated BA concentrations in the aortic plasma of the rats with TM treatment. Hepatic expression of Abcc3 that encodes BA transporter was significantly upregulated and positively correlated with the aortic BA levels. While these responses may not be exclusively attributable to ER stress and could partially arise from ER stress-independent effects of TM, these findings offer fundamental insights into BA metabolism in response to exogenous chemicals and suggest that ER stress contributes to increased systemic BA circulation when hepatic function is compromised.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":"663-670"},"PeriodicalIF":1.3,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146257424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparative functional evaluation of the atypically modified GlcHMS326 and porphyra-334, Two structurally distinct mycosporine-like amino acids.","authors":"Taiki Aono, Erika Katayama, Tomoki Tsuboi, Sasiprapa Samsri, Rungaroon Waditee-Sirisattha, Hakuto Kageyama","doi":"10.1093/bbb/zbag011","DOIUrl":"10.1093/bbb/zbag011","url":null,"abstract":"<p><p>Mycosporine-like amino acids (MAAs) are natural compounds widely studied for their photoprotective and antioxidant properties. Typical MAAs consist of one or two amino acids attached to a cyclohexenone or cyclohexenimine ring, whereas atypical MAAs possess unique chemical modifications such as glycosylation and methylation. Recently, we identified an atypical MAA, GlcHMS326, from the cyanobacterium Gloeocapsa sp. BRSZ, characterized by glycosylation, methylation, and hydroxylation. In this study, we compared the chemical stability and biological activities of GlcHMS326 with those of a typical di-substituted MAA, porphyra-334. GlcHMS326 was less stable under high-temperature conditions but showed a slightly higher residual rate than porphyra-334 under the present visible-light exposure conditions. Functionally, GlcHMS326 showed stronger antioxidant and collagenase inhibitory activities but weaker antiglycative activity. Neither compound inhibited hyaluronidase activity. Both MAAs inhibited angiotensin-converting enzyme, with porphyra-334 showing stronger inhibition. These results provide insights into how chemical modifications influence the functional properties of MAAs.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":"650-658"},"PeriodicalIF":1.3,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145997353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Different sterol compositions of honey bee Apis mellifera L. indicate role-dependent sterol metabolism.","authors":"Makoto Ito, Hiroki Kohno, Hitomi Seike, Takao K Suzuki, Shinji Nagata","doi":"10.1093/bbb/zbag017","DOIUrl":"10.1093/bbb/zbag017","url":null,"abstract":"<p><p>Honey bee Apis mellifera L. adults exhibit a sterol composition dominated by phytosterols such as 24-methylene-cholesterol and β-sitosterol, while most insects possess cholesterol as a primary sterol. To examine whether sterol composition varies by social roles, we analyzed nurse bees and foragers using gas chromatography-mass spectrometry. The analysis showed the four phytosterols, with 24-methylene-cholesterol being predominant. Honey, a dietary source for honey bees, contained more campesterol than in the whole body, suggesting possible metabolic use. Few significant differences in sterol compositions among tissues indicated that sterol metabolism is not tissue specific. However, social roles influenced different sterol compositions; nurse bees had higher β-sitosterol and isofucosterol, while foragers had more 24-methylene-cholesterol. Additionally, nurse bees retained more 24-methylene-cholesterol in their midgut. These findings suggest that sterol metabolism is influenced by social roles, probably due to differences in diet, absorption, or retention, rather than tissue dependent metabolism.</p>","PeriodicalId":9175,"journal":{"name":"Bioscience, Biotechnology, and Biochemistry","volume":" ","pages":"587-596"},"PeriodicalIF":1.3,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146164236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}