Journal of Developmental Biology最新文献_第2页

Neuronal Populations Involved in Motor Function Show Prominent Expression of Sbno1 During Postnatal Brain Development. 参与运动功能的神经元群在出生后大脑发育过程中显著表达Sbno1。

IF 2.2

Journal of Developmental Biology Pub Date : 2025-01-21 DOI: 10.3390/jdb13010003

Sunjidmaa Zolzaya, Dai Ihara, Munkhsoyol Erkhembaatar, Shinsuke Ochiai, Ayaka Isa, Mariko Nishibe, Jean-Pierre Bellier, Takahiro Shimizu, Satoshi Kikkawa, Ryo Nitta, Yu Katsuyama

{"title":"Neuronal Populations Involved in Motor Function Show Prominent Expression of Sbno1 During Postnatal Brain Development.","authors":"Sunjidmaa Zolzaya, Dai Ihara, Munkhsoyol Erkhembaatar, Shinsuke Ochiai, Ayaka Isa, Mariko Nishibe, Jean-Pierre Bellier, Takahiro Shimizu, Satoshi Kikkawa, Ryo Nitta, Yu Katsuyama","doi":"10.3390/jdb13010003","DOIUrl":"10.3390/jdb13010003","url":null,"abstract":"Human genome studies have suggested that strawberry notch homologue 1 (SBNO1) is crucial for normal brain development, with mutations potentially contributing to neurodevelopmental disorders. In a previous study, we observed significant developmental abnormalities in the neocortex of Sbno1 as early as one week after birth. In the present study, we conducted an extensive analysis of Sbno1 postnatal expression in the brain of C57BL/6 mice using a newly developed in-house polyclonal antibody against Sbno1. We found that Sbno1 is expressed in all neurons, with certain neuronal populations exhibiting distinct dynamic changes (both temporal and spatial) in expression level. These findings suggest that the neuronal expression of Sbno1 is developmentally regulated after birth. They also indicate that while Sbno1 may play a general role across all neurons, it may also serve more specialized functions in certain neuronal types and/or for certain cellular activities related to particular neuronal pathways.","PeriodicalId":15563,"journal":{"name":"Journal of Developmental Biology","volume":"13 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11843823/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143468270","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}

引用次数: 0

Regeneration, Regengrow and Tissue Repair in Animals: Evolution Indicates That No Regeneration Occurs in Terrestrial Environments but Only Recovery Healing. 动物的再生、再生和组织修复：进化表明在陆地环境中没有再生，只有恢复愈合。

IF 2.2

Journal of Developmental Biology Pub Date : 2024-12-30 DOI: 10.3390/jdb13010002

Lorenzo Alibardi

{"title":"Regeneration, Regengrow and Tissue Repair in Animals: Evolution Indicates That No Regeneration Occurs in Terrestrial Environments but Only Recovery Healing.","authors":"Lorenzo Alibardi","doi":"10.3390/jdb13010002","DOIUrl":"10.3390/jdb13010002","url":null,"abstract":"The present, brief review paper summarizes previous studies on a new interpretation of the presence and absence of regeneration in invertebrates and vertebrates. Broad regeneration is considered exclusive of aquatic or amphibious animals with larval stages and metamorphosis, where also a patterning process is activated for whole-body regeneration or for epimorphosis. In contrast, terrestrial invertebrates and vertebrates can only repair injury or the loss of body parts through a variable \"recovery healing\" of tissues, regengrow or scarring. This loss of regeneration likely derives from the change in genomes during land adaptation, which included the elimination of larval stages and intense metamorphosis. The terrestrial conditions are incompatible with the formation of embryonic organs that are necessary for broad regeneration. In fact, no embryonic organ can survive desiccation, intense UV or ROS exposition on land, and rapid reparative processes without embryonic patterning, such as recovery healing and scarring, have replaced broad regeneration in terrestrial species. The loss of regeneration in land animals likely depends on the alteration of developmental gene pathways sustaining regeneration that occurred in progenitor marine animals. Terrestrial larval stages, like those present in insects among arthropods, only metamorphose using small body regions indicated as imaginal disks, a terrestrial adaptation, not from a large restructuring process like in aquatic-related animals. These invertebrates can reform body appendages only during molting, a process indicated as regengrow, not regeneration. Most amniotes only repair injuries through scarring or a variable recovery healing, occasionally through regengrow, the contemporaneous healing in conjunction with somatic growth, forming sometimes new heteromorphic organs.","PeriodicalId":15563,"journal":{"name":"Journal of Developmental Biology","volume":"13 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11755470/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143023532","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}

引用次数: 0

Mesenchymal Traits as an Intrinsic Feature of Undifferentiated Cells. 间充质性状是未分化细胞的内在特征。

IF 2.2

Journal of Developmental Biology Pub Date : 2024-12-24 DOI: 10.3390/jdb13010001

Mirco Galiè

引用次数: 0

Genetics and Genomics of Gastroschisis, Elucidating a Potential Genetic Etiology for the Most Common Abdominal Defect: A Systematic Review. 胃裂的遗传学和基因组学，阐明了最常见的腹部缺陷的潜在遗传病因：一项系统综述。

IF 2.2

Journal of Developmental Biology Pub Date : 2024-12-19 DOI: 10.3390/jdb12040034

John P Marquart, Qian Nie, Tessa Gonzalez, Angie C Jelin, Ulrich Broeckel, Amy J Wagner, Honey V Reddi

{"title":"Genetics and Genomics of Gastroschisis, Elucidating a Potential Genetic Etiology for the Most Common Abdominal Defect: A Systematic Review.","authors":"John P Marquart, Qian Nie, Tessa Gonzalez, Angie C Jelin, Ulrich Broeckel, Amy J Wagner, Honey V Reddi","doi":"10.3390/jdb12040034","DOIUrl":"10.3390/jdb12040034","url":null,"abstract":"(1) Background: The exact etiology for gastroschisis, the most common abdominal defect, is yet to be known, despite the rising prevalence of this condition. The leading theory suggests an increased familial risk, indicating a possible genetic component possibly in the context of environmental risk factors. This systematic review aims to summarize the studies focused on the identification of a potential genetic etiology for gastroschisis to elucidate the status of the field. (2) Methods: Following the PRISMA-ScR method, Pubmed and Google Scholar were searched, and eligible publications were mined for key data fields such as study aims, cohort demographics, technologies used, and outcomes in terms of genes identified. Data from 14 human studies, with varied cohort sizes from 40 to 1966 individuals for patient vs. healthy controls, respectively, were mined to delineate the technologies evaluated. (3) Results: Our results continue the theory that gastroschisis is likely caused by gene-environment interactions. The 14 studies utilized traditional methodologies that may not be adequate to identify genetic involvement in gastroschisis. (4) Conclusions: The etiology of gastroschisis continues to remain elusive. A combination of omics and epigenetic evaluation studies would help delineate a possible genetic etiology for gastroschisis.","PeriodicalId":15563,"journal":{"name":"Journal of Developmental Biology","volume":"12 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11727865/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894984","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}

引用次数: 0

Comprehensive Predictions of Mef2-Mediated Chromatin Loops, Which May Inhibit Ubx Binding by Blocking Low-Affinity Binding Sites. mef2介导的染色质环可能通过阻断低亲和力结合位点抑制Ubx结合的综合预测。

IF 2.2

Journal of Developmental Biology Pub Date : 2024-12-09 DOI: 10.3390/jdb12040033

Katrin Domsch

{"title":"Comprehensive Predictions of Mef2-Mediated Chromatin Loops, Which May Inhibit Ubx Binding by Blocking Low-Affinity Binding Sites.","authors":"Katrin Domsch","doi":"10.3390/jdb12040033","DOIUrl":"10.3390/jdb12040033","url":null,"abstract":"Gene regulation depends on the interaction between chromatin-associated factors, such as transcription factors (TFs), which promote chromatin loops to ensure tight contact between enhancer and promoter regions. So far, positive interactions that lead to gene activation have been the main focus of research, but regulations related to blocking or inhibiting factor binding are also essential to maintaining a defined cellular status. To understand these interactions in greater detail, I investigated the possibility of the muscle differentiation factor Mef2 to prevent early Hox factor binding, leading to the proper timing of regulatory processes and the activation of differentiation events. My investigations relied on a collection of publicly available genome-wide binding data sets of Mef2 and Ubx (as the Hox factor), Capture-C interactions, and ATAC-seq analysis in Mef2 mutant cells. The analysis indicated that Mef2 can form possible chromatin loops to Ubx-bound regions. These regions contain low-affinity Ubx binding sites, and the chromatin architecture is independent of Mef2's function. High levels of Ubx may disrupt the loops and allow specific Ubx bindings to regulate defined targets. In summary, my investigations highlight that the use of many publicly available data sets enables computational approaches to make robust predictions and, for the first time, suggest a molecular function of Mef2 as a preventer of Hox binding, indicating that it may act as a timer for muscle differentiation.","PeriodicalId":15563,"journal":{"name":"Journal of Developmental Biology","volume":"12 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11678716/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894982","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}

引用次数: 0

The Loss of Tafazzin Transacetylase Activity Is Sufficient to Drive Testicular Infertility. 他法嗪转乙酰酶活性的丧失足以导致睾丸不育。

IF 2.2

Journal of Developmental Biology Pub Date : 2024-11-26 DOI: 10.3390/jdb12040032

Paige L Snider, Elizabeth A Sierra Potchanant, Catalina Matias, Donna M Edwards, Jeffrey J Brault, Simon J Conway

{"title":"The Loss of Tafazzin Transacetylase Activity Is Sufficient to Drive Testicular Infertility.","authors":"Paige L Snider, Elizabeth A Sierra Potchanant, Catalina Matias, Donna M Edwards, Jeffrey J Brault, Simon J Conway","doi":"10.3390/jdb12040032","DOIUrl":"10.3390/jdb12040032","url":null,"abstract":"Barth syndrome (BTHS) is a rare, infantile-onset, X-linked mitochondriopathy exhibiting a variable presentation of failure to thrive, growth insufficiency, skeletal myopathy, neutropenia, and heart anomalies due to mitochondrial dysfunction secondary to inherited TAFAZZIN transacetylase mutations. Although not reported in BTHS patients, male infertility is observed in several Tafazzin (Taz) mouse alleles and in a Drosophila mutant. Herein, we examined the male infertility phenotype in a BTHS-patient-derived D75H point-mutant knockin mouse (TazPM) allele that expresses a mutant protein lacking transacetylase activity. Neonatal and adult TazPM testes were hypoplastic, and their epididymis lacked sperm. Histology and biomarker analysis revealed TazPM spermatogenesis is arrested prior to sexual maturation due to an inability to undergo meiosis and the generation of haploid spermatids. Moreover, TazPM testicular mitochondria were found to be structurally abnormal, and there was an elevation of p53-dependent apoptosis within TazPM seminiferous tubules. Immunoblot analysis revealed that TazPM gamete genome integrity was compromised, and both histone γ-H2Ax and Nucleoside diphosphate kinase-5 protein expression were absent in juvenile TazPM testes when compared to controls. We demonstrate that Taz-mediated transacetylase activity is required within mitochondria for normal spermatogenesis, and its absence results in meiotic arrest. We hypothesize that elevated TazPM spermatogonial apoptosis causes azoospermia and complete infertility.","PeriodicalId":15563,"journal":{"name":"Journal of Developmental Biology","volume":"12 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11677720/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894985","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}

引用次数: 0

Transcriptomic Evidence for Cell-Autonomous Sex Differentiation of the Gynandromorphic Fat Body in the Silkworm, Bombyx mori. 雌雄同体脂肪体细胞自主性别分化的转录组证据

IF 2.2

Journal of Developmental Biology Pub Date : 2024-11-20 DOI: 10.3390/jdb12040031

Fumiko Yamamoto, Takeshi Yokoyama, Yan Su, Masataka G Suzuki

{"title":"Transcriptomic Evidence for Cell-Autonomous Sex Differentiation of the Gynandromorphic Fat Body in the Silkworm, Bombyx mori.","authors":"Fumiko Yamamoto, Takeshi Yokoyama, Yan Su, Masataka G Suzuki","doi":"10.3390/jdb12040031","DOIUrl":"10.3390/jdb12040031","url":null,"abstract":"The classic model of sex determination in insects suggests that they do not have sex hormones and that sex is determined in a cell-autonomous manner. On the other hand, there is accumulating evidence that the development of secondary sexual traits is controlled in a non-cell-autonomous manner through external factors. To evaluate the degrees of the cell-autonomous and non-cell-autonomous regulation of secondary sexual trait development, we analyzed the dynamics of the sexually dimorphic transcriptome in gynandromorphic individuals of the mo mutant strain in the silkworm Bombyx mori. The silkworm possesses a female heterogametic sex-determination system (ZZ = male/ZW = female), where the master regulatory gene for femaleness, Feminizer (Fem), is located in the W chromosome. As a secondary sexual trait, we focused on the fat body, which shows remarkable differences between the sexes during the last instar larval stage. A comparison of the transcriptomes between the fat bodies of male and female larvae identified 232 sex-differentially expressed genes (S-DEGs). The proportions of ZZ and ZW cells constituting the fat body of the gynandromorphic larvae were calculated according to the expression level of the Fem. Based on the obtained values, the expression level of each S-DEG was estimated, assuming that the levels of S-DEG expression were determined according to the proportion of ZZ and ZW cells. The estimated expression levels of 207 out of 232 S-DEGs were strongly correlated with the corresponding S-DEG expression level of the gynandromorphic fat body, determined by RNA-seq. These results strongly suggest that most of the sexually dimorphic transcriptome in the fat body is regulated in a cell-autonomous manner.","PeriodicalId":15563,"journal":{"name":"Journal of Developmental Biology","volume":"12 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11587106/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142710266","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}

引用次数: 0

Methyl-Beta-Cyclodextrin Restores Aberrant Bone Morphogenetic Protein 2-Signaling in Bone Marrow Stromal Cells Obtained from Aged C57BL/6 Mice. 甲基-β-环糊精可恢复老龄 C57BL/6 小鼠骨髓基质细胞中异常的骨形态发生蛋白 2 信号传导。

IF 2.2

Journal of Developmental Biology Pub Date : 2024-11-18 DOI: 10.3390/jdb12040030

Daniel Halloran, Venu Pandit, Kelechi Chukwuocha, Anja Nohe

{"title":"Methyl-Beta-Cyclodextrin Restores Aberrant Bone Morphogenetic Protein 2-Signaling in Bone Marrow Stromal Cells Obtained from Aged C57BL/6 Mice.","authors":"Daniel Halloran, Venu Pandit, Kelechi Chukwuocha, Anja Nohe","doi":"10.3390/jdb12040030","DOIUrl":"10.3390/jdb12040030","url":null,"abstract":"During aging, disruptions in various signaling pathways become more common. Some older patients will exhibit irregular bone morphogenetic protein (BMP) signaling, which can lead to osteoporosis (OP)-a debilitating bone disease resulting from an imbalance between osteoblasts and osteoclasts. In 2002, the Food and Drug Administration (FDA) approved recombinant human BMP-2 (rhBMP-2) for use in spinal fusion surgeries as it is required for bone formation. However, complications with rhBMP-2 arose and primary osteoblasts from OP patients often fail to respond to BMP-2. Although patient samples are available for study, previous medical histories can impact results. Consequently, the C57BL/6 mouse line serves as a valuable model for studying OP and aging. We find that BMP receptor type Ia (BMPRIa) is upregulated in the bone marrow stromal cells (BMSCs) of 15-month-old mice, consistent with prior data. Furthermore, conjugating BMP-2 with Quantum Dots (QDot®s) allows effective binding to BMPRIa, creating a fluorescent tag for BMP-2. Furthermore, after treating BMSCs with methyl-β-cyclodextrin (MβCD), a disruptor of cellular endocytosis, BMP signaling is restored in 15-month-old mice, as shown by von Kossa assays. MβCD has the potential to restore BMPRIa function, and the BMP signaling pathway offers a promising avenue for future OP therapies.","PeriodicalId":15563,"journal":{"name":"Journal of Developmental Biology","volume":"12 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11586967/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142710257","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}

引用次数: 0

Prosaposin/Saposin Expression in the Developing Rat Olfactory and Vomeronasal Epithelia. 发育中的大鼠嗅觉和绒毛膜上皮中的前列素/前列素表达

IF 2.2

Journal of Developmental Biology Pub Date : 2024-11-06 DOI: 10.3390/jdb12040029

Kai Kitamura, Kyoko Saito, Takeshi Homma, Aimi Fuyuki, Sawa Onouchi, Shouichiro Saito

{"title":"Prosaposin/Saposin Expression in the Developing Rat Olfactory and Vomeronasal Epithelia.","authors":"Kai Kitamura, Kyoko Saito, Takeshi Homma, Aimi Fuyuki, Sawa Onouchi, Shouichiro Saito","doi":"10.3390/jdb12040029","DOIUrl":"10.3390/jdb12040029","url":null,"abstract":"Prosaposin is a glycoprotein widely conserved in vertebrates, and it acts as a precursor for saposins that accelerate hydrolysis in lysosomes or acts as a neurotrophic factor without being processed into saposins. Neurogenesis in the olfactory neuroepithelia, including the olfactory epithelium (OE) and the vomeronasal epithelium (VNE), is known to occur throughout an animal's life, and mature olfactory neurons (ORNs) and vomeronasal receptor neurons (VRNs) have recently been revealed to express prosaposin in the adult olfactory organ. In this study, the expression of prosaposin in the rat olfactory organ during postnatal development was examined. In the OE, prosaposin immunoreactivity was observed in mature ORNs labeled using olfactory marker protein (OMP) from postnatal day (P) 0. Immature ORNs showed no prosaposin immunoreactivity throughout the examined period. In the VNE, OMP-positive VRNs were mainly observed in the basal region of the VNE on P10 and showed an adult-like distribution from P20. On the other hand, prosaposin immunoreactivity was observed in VRNs from P0, suggesting that not only mature VRNs but also immature VRNs express prosaposin. This study raises the possibility that prosaposin is required for the normal development of the olfactory organ and has different roles in the OE and the VNE.","PeriodicalId":15563,"journal":{"name":"Journal of Developmental Biology","volume":"12 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11587001/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142710260","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}

引用次数: 0

How the Oocyte Nucleolus Is Turned into a Karyosphere: The Role of Heterochromatin and Structural Proteins. 卵母细胞核仁如何变成核仁层？异染色质和结构蛋白的作用

IF 2.2

Journal of Developmental Biology Pub Date : 2024-10-18 DOI: 10.3390/jdb12040028

Venera Nikolova, Maya Markova, Ralitsa Zhivkova, Irina Chakarova, Valentina Hadzhinesheva, Stefka Delimitreva

{"title":"How the Oocyte Nucleolus Is Turned into a Karyosphere: The Role of Heterochromatin and Structural Proteins.","authors":"Venera Nikolova, Maya Markova, Ralitsa Zhivkova, Irina Chakarova, Valentina Hadzhinesheva, Stefka Delimitreva","doi":"10.3390/jdb12040028","DOIUrl":"https://doi.org/10.3390/jdb12040028","url":null,"abstract":"Oocyte meiotic maturation includes large-scale chromatin remodeling as well as cytoskeleton and nuclear envelope rearrangements. This review addresses the dynamics of key cytoskeletal proteins (tubulin, actin, vimentin, and cytokeratins) and nuclear envelope proteins (lamin A/C, lamin B, and the nucleoporin Nup160) in parallel with chromatin reorganization in maturing mouse oocytes. A major feature of this reorganization is the concentration of heterochromatin into a spherical perinucleolar rim called surrounded nucleolus or karyosphere. In early germinal vesicle (GV) oocytes with non-surrounded nucleolus (without karyosphere), lamins and Nup160 are at the nuclear envelope while cytoplasmic cytoskeletal proteins are outside the nucleus. At the beginning of karyosphere formation, lamins and Nup160 follow the heterochromatin relocation assembling a new spherical structure in the GV. In late GV oocytes with surrounded nucleolus (fully formed karyosphere), the nuclear envelope gradually loses its integrity and cytoplasmic cytoskeletal proteins enter the nucleus. At germinal vesicle breakdown, lamin B occupies the karyosphere interior while all the other proteins stay at the karyosphere border or connect to chromatin. In metaphase oocytes, lamin A/C surrounds the spindle, Nup160 localizes to its poles, actin and lamin B are attached to the spindle fibers, and cytoplasmic intermediate filaments associate with both the spindle fibers and the metaphase chromosomes.","PeriodicalId":15563,"journal":{"name":"Journal of Developmental Biology","volume":"12 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11503394/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142501608","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}

引用次数: 0