Cell and Tissue Research最新文献_第10页

The application and development of electron microscopy for three-dimensional reconstruction in life science: a review. 电子显微镜在生命科学三维重建中的应用和发展：综述。

IF 3.6 3区生物学

Cell and Tissue Research Pub Date : 2024-04-01 Epub Date: 2024-02-28 DOI: 10.1007/s00441-024-03878-7

Jingjing Zhao, Xiaoping Yu, Xuping Shentu, Danting Li

{"title":"The application and development of electron microscopy for three-dimensional reconstruction in life science: a review.","authors":"Jingjing Zhao, Xiaoping Yu, Xuping Shentu, Danting Li","doi":"10.1007/s00441-024-03878-7","DOIUrl":"10.1007/s00441-024-03878-7","url":null,"abstract":"Imaging technologies have played a pivotal role in advancing biological research by enabling visualization of biological structures and processes. While traditional electron microscopy (EM) produces two-dimensional images, emerging techniques now allow high-resolution three-dimensional (3D) characterization of specimens in situ, meeting growing needs in molecular and cellular biology. Combining transmission electron microscopy (TEM) with serial sectioning inaugurated 3D imaging, attracting biologists seeking to explore cell ultrastructure and driving advancement of 3D EM reconstruction. By comprehensively and precisely rendering internal structure and distribution, 3D TEM reconstruction provides unparalleled ultrastructural insights into cells and molecules, holding tremendous value for elucidating structure-function relationships and broadly propelling structural biology. Here, we first introduce the principle of 3D reconstruction of cells and tissues by classical approaches in TEM and then discuss modern technologies utilizing TEM and on new SEM-based as well as cryo-electron microscope (cryo-EM) techniques. 3D reconstruction techniques from serial sections, electron tomography (ET), and the recent single-particle analysis (SPA) are examined; the focused ion beam scanning electron microscopy (FIB-SEM), the serial block-face scanning electron microscopy (SBF-SEM), and automatic tape-collecting lathe ultramicrotome (ATUM-SEM) for 3D reconstruction of large volumes are discussed. Finally, we review the challenges and development prospects of these technologies in life science. It aims to provide an informative reference for biological researchers.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":" ","pages":"1-18"},"PeriodicalIF":3.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139982488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative transcriptomic and phenotypic analysis of induced pluripotent stem cell hepatocyte-like cells and primary human hepatocytes. 诱导多能干细胞肝细胞样细胞与原代人类肝细胞的转录组和表型比较分析。

IF 3.6 3区生物学

Cell and Tissue Research Pub Date : 2024-04-01 Epub Date: 2024-02-19 DOI: 10.1007/s00441-024-03868-9

Neeti Gandhi, Lauren Wills, Kyle Akers, Yiqi Su, Parker Niccum, T M Murali, Padmavathy Rajagopalan

{"title":"Comparative transcriptomic and phenotypic analysis of induced pluripotent stem cell hepatocyte-like cells and primary human hepatocytes.","authors":"Neeti Gandhi, Lauren Wills, Kyle Akers, Yiqi Su, Parker Niccum, T M Murali, Padmavathy Rajagopalan","doi":"10.1007/s00441-024-03868-9","DOIUrl":"10.1007/s00441-024-03868-9","url":null,"abstract":"Primary human hepatocytes (PHHs) are used extensively for in vitro liver cultures to study hepatic functions. However, limited availability and invasive retrieval prevent their widespread use. Induced pluripotent stem cells exhibit significant potential since they can be obtained non-invasively and differentiated into hepatic lineages, such as hepatocyte-like cells (iHLCs). However, there are concerns about their fetal phenotypic characteristics and their hepatic functions compared to PHHs in culture. Therefore, we performed an RNA-sequencing (RNA-seq) analysis to understand pathways that are either up- or downregulated in each cell type. Analysis of the RNA-seq data showed an upregulation in the bile secretion pathway where genes such as AQP9 and UGT1A1 were higher expressed in PHHs compared to iHLCs by 455- and 15-fold, respectively. Upon immunostaining, bile canaliculi were shown to be present in PHHs. The TCA cycle in PHHs was upregulated compared to iHLCs. Cellular analysis showed a 2-2.5-fold increase in normalized urea production in PHHs compared to iHLCs. In addition, drug metabolism pathways, including cytochrome P450 (CYP450) and UDP-glucuronosyltransferase enzymes, were upregulated in PHHs compared to iHLCs. Of note, CYP2E1 gene expression was significantly higher (21,810-fold) in PHHs. Acetaminophen and ethanol were administered to PHH and iHLC cultures to investigate differences in biotransformation. CYP450 activity of baseline and toxicant-treated samples was significantly higher in PHHs compared to iHLCs. Our analysis revealed that iHLCs have substantial differences from PHHs in critical hepatic functions. These results have highlighted the differences in gene expression and hepatic functions between PHHs and iHLCs to motivate future investigation.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":" ","pages":"119-139"},"PeriodicalIF":3.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139899404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anatomical changes of Tenebrio molitor and Tribolium castaneum during complete metamorphosis. Tenebrio molitor 和 Tribolium castaneum 在完全变态过程中的解剖变化。

IF 3.6 3区生物学

Cell and Tissue Research Pub Date : 2024-04-01 Epub Date: 2024-02-27 DOI: 10.1007/s00441-024-03877-8

Maria Luigia Vommaro, Sandro Donato, Simone Caputo, Raffaele G Agostino, Aurora Montali, Gianluca Tettamanti, Anita Giglio

{"title":"Anatomical changes of Tenebrio molitor and Tribolium castaneum during complete metamorphosis.","authors":"Maria Luigia Vommaro, Sandro Donato, Simone Caputo, Raffaele G Agostino, Aurora Montali, Gianluca Tettamanti, Anita Giglio","doi":"10.1007/s00441-024-03877-8","DOIUrl":"10.1007/s00441-024-03877-8","url":null,"abstract":"In holometabolous insects, extensive reorganisation of tissues and cells occurs at the pupal stage. The remodelling of the external exoskeleton and internal organs that intervenes during metamorphosis has been traditionally studied in many insect species based on histological or ultrastructural methods. This study demonstrates the use of synchrotron X-ray phase-contrast micro-computed tomography as a powerful, non-destructive tool for in situ morphological observation of anatomical structures at the pupal stage in two Tenebrionid beetles, i.e. Tribolium castaneum and Tenebrio molitor, known as important pests, as well as emerging and promising models in experimental biology. Virtual sections and three-dimensional reconstructions were performed on both males and females at early, intermediate, and late pupal stage. The dataset allowed us to observe the remodelling of the gut and nervous system as well as the shaping of the female and male reproductive system at different pupal ages in both mealworm and red flour beetles. Moreover, we observed that the timing and duration pattern of organ development varied between the species analysed, likely related to the species-specific adaptations of the pre-imaginal stages to environmental conditions, which ultimately affect their life cycle. This research provides new knowledge on the morphological modifications that occur during the pupal stage of holometabolous insects and provides a baseline set of information on beetle metamorphosis that may support future research in forensics, physiology, and ecology as well as an image atlas for educational purposes.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":" ","pages":"19-40"},"PeriodicalIF":3.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10997553/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139971100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nescient helix-loop-helix 1 (Nhlh1) is a novel activating transcription factor 5 (ATF5) target gene in olfactory and vomeronasal sensory neurons in mice. Nescient helix-loop-helix 1（Nhlh1）是小鼠嗅觉和绒毛感觉神经元中的一种新型激活转录因子 5（ATF5）靶基因。

IF 3.6 3区生物学

Cell and Tissue Research Pub Date : 2024-04-01 Epub Date: 2024-02-23 DOI: 10.1007/s00441-024-03871-0

Chiharu Ishii, Haruo Nakano, Riko Higashiseto, Yusaku Ooki, Mariko Umemura, Shigeru Takahashi, Yuji Takahashi

{"title":"Nescient helix-loop-helix 1 (Nhlh1) is a novel activating transcription factor 5 (ATF5) target gene in olfactory and vomeronasal sensory neurons in mice.","authors":"Chiharu Ishii, Haruo Nakano, Riko Higashiseto, Yusaku Ooki, Mariko Umemura, Shigeru Takahashi, Yuji Takahashi","doi":"10.1007/s00441-024-03871-0","DOIUrl":"10.1007/s00441-024-03871-0","url":null,"abstract":"Activating transcription factor 5 (ATF5) is a transcription factor that belongs to the cAMP-response element-binding protein/ATF family and is essential for the differentiation and survival of sensory neurons in mouse olfactory organs. However, transcriptional target genes for ATF5 have yet to be identified. In the present study, chromatin immunoprecipitation-quantitative polymerase chain reaction (ChIP-qPCR) experiments were performed to verify ATF5 target genes in the main olfactory epithelium and vomeronasal organ in the postnatal pups. ChIP-qPCR was conducted using hemagglutinin (HA)-tagged ATF5 knock-in olfactory organs. The results obtained demonstrated that ATF5-HA fusion proteins bound to the CCAAT/enhancer-binding protein-ATF response element (CARE) site in the enhancer region of nescient helix-loop-helix 1 (Nhlh1), a transcription factor expressed in differentiating olfactory and vomeronasal sensory neurons. Nhlh1 mRNA expression was downregulated in ATF5-deficient (ATF5-/-) olfactory organs. The LIM/homeobox protein transcription factor Lhx2 co-localized with ATF5 in the nuclei of olfactory and vomeronasal sensory neurons and bound to the homeodomain site proximal to the CARE site in the Nhlh1 gene. The CARE region of the Nhlh1 gene was enriched by the active enhancer marker, acetyl-histone H3 (Lys27). The present study identified Nhlh1 as a novel target gene for ATF5 in murine olfactory organs. ATF5 may upregulate Nhlh1 expression in concert with Lhx2, thereby promoting the differentiation of olfactory and vomeronasal sensory neurons.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":" ","pages":"85-94"},"PeriodicalIF":3.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139930231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Joubert syndrome-derived induced pluripotent stem cells show altered neuronal differentiation in vitro 来源于朱伯综合征的诱导多能干细胞在体外显示出神经元分化的改变

IF 3.6 3区生物学

Cell and Tissue Research Pub Date : 2024-03-19 DOI: 10.1007/s00441-024-03876-9

Roberta De Mori, Silvia Tardivo, Lidia Pollara, Silvia Clara Giliani, Eltahir Ali, Lucio Giordano, Vincenzo Leuzzi, Rita Fischetto, Blanca Gener, Santo Diprima, Marco J. Morelli, Maria Cristina Monti, Virginie Sottile, Enza Maria Valente

{"title":"Joubert syndrome-derived induced pluripotent stem cells show altered neuronal differentiation in vitro","authors":"Roberta De Mori, Silvia Tardivo, Lidia Pollara, Silvia Clara Giliani, Eltahir Ali, Lucio Giordano, Vincenzo Leuzzi, Rita Fischetto, Blanca Gener, Santo Diprima, Marco J. Morelli, Maria Cristina Monti, Virginie Sottile, Enza Maria Valente","doi":"10.1007/s00441-024-03876-9","DOIUrl":"https://doi.org/10.1007/s00441-024-03876-9","url":null,"abstract":"Joubert syndrome (JS) is a recessively inherited congenital ataxia characterized by hypotonia, psychomotor delay, abnormal ocular movements, intellectual disability, and a peculiar cerebellar and brainstem malformation, the “molar tooth sign.” Over 40 causative genes have been reported, all encoding for proteins implicated in the structure or functioning of the primary cilium, a subcellular organelle widely present in embryonic and adult tissues. In this paper, we developed an in vitro neuronal differentiation model using patient-derived induced pluripotent stem cells (iPSCs), to evaluate possible neurodevelopmental defects in JS. To this end, iPSCs from four JS patients harboring mutations in distinct JS genes (AHI1, CPLANE1, TMEM67, and CC2D2A) were differentiated alongside healthy control cells to obtain mid-hindbrain precursors and cerebellar granule cells. Differentiation was monitored over 31 days through the detection of lineage-specific marker expression by qRT-PCR, immunofluorescence, and transcriptomics analysis. All JS patient-derived iPSCs, regardless of the mutant gene, showed a similar impairment to differentiate into mid-hindbrain and cerebellar granule cells when compared to healthy controls. In addition, analysis of primary cilium count and morphology showed notable ciliary defects in all differentiating JS patient-derived iPSCs compared to controls. These results confirm that patient-derived iPSCs are an accessible and relevant in vitro model to analyze cellular phenotypes connected to the presence of JS gene mutations in a neuronal context.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":"30 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140169149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rheb1 is required for limb growth through regulating chondrogenesis in growth plate. 肢体生长需要 Rheb1 通过调节生长板中的软骨形成。

IF 3.6 3区生物学

Cell and Tissue Research Pub Date : 2024-03-01 Epub Date: 2024-01-23 DOI: 10.1007/s00441-024-03861-2

Yuwei Zhang, Jiaxin Wen, Ruijun Lai, Jiahuan Zhang, Kai Li, Yue Zhang, Anling Liu, Xiaochun Bai

{"title":"Rheb1 is required for limb growth through regulating chondrogenesis in growth plate.","authors":"Yuwei Zhang, Jiaxin Wen, Ruijun Lai, Jiahuan Zhang, Kai Li, Yue Zhang, Anling Liu, Xiaochun Bai","doi":"10.1007/s00441-024-03861-2","DOIUrl":"10.1007/s00441-024-03861-2","url":null,"abstract":"Ras homology enriched in the brain (Rheb) is well established as a critical regulator of cell proliferation and differentiation in response to growth factors and nutrients. However, the role of Rheb1 in limb development remains unknown. Here, we found that Rheb1 was dynamically expressed during the proliferation and differentiation of chondrocytes in the growth plate. Given that Prrx1+ limb-bud-like mesenchymal cells are the source of limb chondrocytes and are essential for endochondral ossification, we conditionally deleted Rheb1 using Prrx1-Cre and found a limb dwarfism in Prrx1-Cre; Rheb1fl/fl mice. Normalized to growth plate height, the conditional knockout (cKO) mice exhibited a significant decrease in column count of proliferative zones which was increased in hypertrophic zones resulting in decreased growth plate size, indicating abnormal endochondral ossification. Interestingly, although Rheb1 deletion profoundly inhibited the transcription factor Sox9 in limb cartilage; levels of runx2 and collagen type 2 were both increased. These novel findings highlight the essential role of Rheb1 in limb growth and indicate a complex regulation of Rheb1 in chondrocyte proliferation and differentiation.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":" ","pages":"261-269"},"PeriodicalIF":3.6,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10904423/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139520006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Suppression of MALAT1 promotes human synovial mesenchymal stem cells enhance chondrogenic differentiation and prevent osteoarthritis of the knee in a rat model via regulating miR-212-5p/MyD88 axis. 通过调节 miR-212-5p/MyD88 轴，抑制 MALAT1 可促进人滑膜间充质干细胞增强软骨分化并预防大鼠模型中的膝骨关节炎。

IF 3.6 3区生物学

Cell and Tissue Research Pub Date : 2024-03-01 Epub Date: 2024-01-31 DOI: 10.1007/s00441-024-03863-0

Zhengyu Gao, Cuicui Guo, Shuai Xiang, Haining Zhang, Yingzhen Wang, Hao Xu

{"title":"Suppression of MALAT1 promotes human synovial mesenchymal stem cells enhance chondrogenic differentiation and prevent osteoarthritis of the knee in a rat model via regulating miR-212-5p/MyD88 axis.","authors":"Zhengyu Gao, Cuicui Guo, Shuai Xiang, Haining Zhang, Yingzhen Wang, Hao Xu","doi":"10.1007/s00441-024-03863-0","DOIUrl":"10.1007/s00441-024-03863-0","url":null,"abstract":"Osteoarthritis (OA) is one of the most common diseases of the skeleton. Long non-coding RNAs (lncRNAs) are emerging as key players in OA pathogenesis. This work sets out to determine the function of lncRNA MALAT1 in OA and the mechanisms by which it does so. Mesenchymal stem cells isolated from the human synovial membrane are called hSMSCs. The hSMSCs' surface markers were studied using flow cytometry. To determine whether or not hSMSC might differentiate, researchers used a number of different culture settings and labeling techniques. The expression levels of associated genes and proteins were determined using quantitative real-time polymerase chain reaction (RT-qPCR), western blotting (WB), and immunostaining. A dual luciferase reporter experiment and RNA immunoprecipitation (RIP) test demonstrated the direct association between miR-212-5p and MALAT1 or MyD88. MALAT1 was downregulated during the chondrogenic differentiation of hSMSCs, and underexpression of MALAT1 promotes chondrogenesis in hSMSCs. Using dual luciferase reporter and RIP assays facilitated the identification of MALAT1 as a competitive endogenous RNA (ceRNA) that sequesters miR-212-5p. Additionally, the expression of MYD88 was regulated by MALAT1 through direct binding with miR-212-5p. Significantly, the effects of MALAT1 on the chondrogenic differentiation of hSMSCs were counteracted by miR-212-5p/MYD88. Furthermore, our in vivo investigation revealed that the inhibition of MALAT1 mitigated osteoarthritis progression in rat models. In conclusion, the promotion of chondrogenic differentiation in hSMSCs and the protective effect on cartilage tissue in OA can be achieved by suppressing MALAT1, which regulates the miR-212-5p/MyD88 axis.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":" ","pages":"251-260"},"PeriodicalIF":3.6,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139641696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Yap/Taz activity is associated with increased expression of phosphoglycerate dehydrogenase that supports myoblast proliferation. Yap/Taz 活性与支持肌母细胞增殖的磷酸甘油酸脱氢酶的表达增加有关。

IF 3.2 3区生物学

Cell and Tissue Research Pub Date : 2024-03-01 Epub Date: 2024-01-06 DOI: 10.1007/s00441-023-03851-w

Marius Meinhold, Sander Verbrugge, Andi Shi, Martin Schönfelder, Lore Becker, Richard T Jaspers, Peter S Zammit, Henning Wackerhage

{"title":"Yap/Taz activity is associated with increased expression of phosphoglycerate dehydrogenase that supports myoblast proliferation.","authors":"Marius Meinhold, Sander Verbrugge, Andi Shi, Martin Schönfelder, Lore Becker, Richard T Jaspers, Peter S Zammit, Henning Wackerhage","doi":"10.1007/s00441-023-03851-w","DOIUrl":"10.1007/s00441-023-03851-w","url":null,"abstract":"In skeletal muscle, the Hippo effector Yap promotes satellite cell, myoblast, and rhabdomyoblast proliferation but prevents myogenic differentiation into multinucleated muscle fibres. We previously noted that Yap drives expression of the first enzyme of the serine biosynthesis pathway, phosphoglycerate dehydrogenase (Phgdh). Here, we examined the regulation and function of Phgdh in satellite cells and myoblasts and found that Phgdh protein increased during satellite cell activation. Analysis of published data reveal that Phgdh mRNA in mouse tibialis anterior muscle was highly expressed at day 3 of regeneration after cardiotoxin injection, when markers of proliferation are also robustly expressed and in the first week of synergist-ablated muscle. Finally, siRNA-mediated knockdown of PHGDH significantly reduced myoblast numbers and the proliferation rate. Collectively, our data suggest that Phgdh is a proliferation-enhancing metabolic enzyme that is induced when quiescent satellite cells become activated.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":" ","pages":"271-283"},"PeriodicalIF":3.2,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10904560/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139110754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Localization of nitric oxide-producing hemocytes in Aedes and Culex mosquitoes infected with bacteria. 感染细菌的伊蚊和库蚊中产生一氧化氮的血细胞的定位。

IF 3.6 3区生物学

Cell and Tissue Research Pub Date : 2024-03-01 Epub Date: 2024-01-19 DOI: 10.1007/s00441-024-03862-1

Stella Bergmann, Emily Graf, Pascal Hoffmann, Stefanie C Becker, Michael Stern

{"title":"Localization of nitric oxide-producing hemocytes in Aedes and Culex mosquitoes infected with bacteria.","authors":"Stella Bergmann, Emily Graf, Pascal Hoffmann, Stefanie C Becker, Michael Stern","doi":"10.1007/s00441-024-03862-1","DOIUrl":"10.1007/s00441-024-03862-1","url":null,"abstract":"Mosquitoes are significant vectors of various pathogens. Unlike vertebrates, insects rely solely on innate immunity. Hemocytes play a crucial role in the cellular part of the innate immune system. The gaseous radical nitric oxide (NO) produced by hemocytes acts against pathogens and also functions as a versatile transmitter in both the immune and nervous systems, utilizing cyclic guanosine monophosphate (cGMP) as a second messenger. This study conducted a parallel comparison of NO synthase (NOS) expression and NO production in hemocytes during Escherichia coli K12 infection in four vector species: Aedes aegypti, Aedes albopictus, Culex pipiens molestus, and Culex pipiens quinquefasciatus. Increased NOS expression by NADPH diaphorase (NADPHd) staining and NO production by immunofluorescence against the by-product L-citrulline were observed in infected mosquito hemocytes distributed throughout the abdomens. NADPHd activity and citrulline labeling were particularly found in periostial hemocytes near the heart, but also on the ventral nerve chord (VNC). Pericardial cells of Ae. aegypti and Cx. p. molestus showed increased citrulline immunofluorescence, suggesting their involvement in the immune response. Oenocytes displayed strong NADPHd and citrulline labeling independent of infection status. This comparative study, consistent with findings in other species, suggests a widespread phenomenon of NO's role in hemocyte responses during E. coli infection. Found differences within and between genera highlight the importance of species-specific investigations.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":" ","pages":"313-326"},"PeriodicalIF":3.6,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10904431/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139490921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long noncoding RNA XIST inhibition promotes Leydig cell apoptosis by acting as a competing endogenous RNA for microRNA-145a-5p that targets SIRT1 in late-onset hypogonadism. 在晚发性性腺功能减退症中，长非编码 RNA XIST 作为靶向 SIRT1 的 microRNA-145a-5p 的竞争性内源性 RNA，其抑制作用可促进睾丸细胞凋亡。

IF 3.6 3区生物学

Cell and Tissue Research Pub Date : 2024-03-01 Epub Date: 2024-02-14 DOI: 10.1007/s00441-024-03860-3

Jing Wang, Yiqiong Yang, Yang Xu, Zhipeng Xu, Xiaozhi Zhao, Ruipeng Jia, Yutian Dai

{"title":"Long noncoding RNA XIST inhibition promotes Leydig cell apoptosis by acting as a competing endogenous RNA for microRNA-145a-5p that targets SIRT1 in late-onset hypogonadism.","authors":"Jing Wang, Yiqiong Yang, Yang Xu, Zhipeng Xu, Xiaozhi Zhao, Ruipeng Jia, Yutian Dai","doi":"10.1007/s00441-024-03860-3","DOIUrl":"10.1007/s00441-024-03860-3","url":null,"abstract":"Leydig cell (LCs) apoptosis is responsible for decreased serum testosterone levels during late-onset hypogonadism (LOH). Our study was designed to illustrate the regulatory effect of lncRNA XIST on LCs and to clarify its molecular mechanism of action in LOH. The Leydig cells (TM3) was treated by 300 μM H2O2 for 8 h to establish Leydig cell oxidative stress model in vitro. The expression levels of lncRNA XIST in the testicular tissues of patients with LOH were measured using fluorescence in situ hybridization (FISH). The interaction between lncRNA XIST/SIRT1 and miR-145a-5p was assessed using starBase and dual-luciferase reporter gene assays. Apoptotic cells and Caspase3 activity were determined by flow cytometry (FCM) assay. Testosterone concentration was determined by ELISA. Moreover, histological assessment of testicles in mice was performed by using HE staining and the TUNEL assay was used to determine apoptosis. We found that the lncRNA XIST was downregulated in the testicular tissues of LOH patients and mice and in H2O2-induced TM3 cells. XIST siRNA significantly promoted apoptosis, enhanced Caspase3 activity and reduced testosterone levels in H2O2-stimulated TM3 cells. Further studies showed that the miR-145a-5p inhibitor reversed the effect of XIST-siRNA on H2O2-induced Leydig cell apoptosis. MiR-145a-5p negatively regulated SIRT1 expression, and SIRT1-siRNA reversed the effects of the miR-145a-5p inhibitor on H2O2 stimulated TM3 cells. The in vivo experiments indicated that silencing of the lncRNA XIST aggravated LOH symptoms in mice. Inhibition of lncRNA XIST induces Leydig cell apoptosis through the miR-145a-5p/SIRT1 axis in the progression of LOH.","PeriodicalId":9712,"journal":{"name":"Cell and Tissue Research","volume":" ","pages":"285-297"},"PeriodicalIF":3.6,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139729101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0