Acta Histochemica Et Cytochemica最新文献

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Detection of SARS-CoV-2 and Its Related Factors on the Mucosal Epithelium of the Tongue. 舌黏膜上皮SARS-CoV-2的检测及其相关因素
IF 2.4 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2023-04-25 DOI: 10.1267/ahc.22-00089
Jun Tamiya, Wakako Sakaguchi, Kimiko Nakagawa, Toshiharu Yamamoto, Juri Saruta, Nobuhisa Kubota, Akira Kawata, Iwao Hasegawa, Nobushiro Hamada, Keiichi Tsukinoki
{"title":"Detection of SARS-CoV-2 and Its Related Factors on the Mucosal Epithelium of the Tongue.","authors":"Jun Tamiya,&nbsp;Wakako Sakaguchi,&nbsp;Kimiko Nakagawa,&nbsp;Toshiharu Yamamoto,&nbsp;Juri Saruta,&nbsp;Nobuhisa Kubota,&nbsp;Akira Kawata,&nbsp;Iwao Hasegawa,&nbsp;Nobushiro Hamada,&nbsp;Keiichi Tsukinoki","doi":"10.1267/ahc.22-00089","DOIUrl":"https://doi.org/10.1267/ahc.22-00089","url":null,"abstract":"<p><p>SARS-CoV-2 infects a variety of tissues, including the oral cavity. However, there are few reports examining the association of SARS-CoV-2 with tongue mucosal tissues with sticky tongue debris. This study investigated the presence of SARS-CoV-2 and its associated molecules by dissecting tongue tissue from autopsy specimens of 23 patients who died of COVID-19-related illness (pneumonia). Immunohistochemical staining, electron microscopy, and PCR analysis were performed on the tongue tissue specimens. The mucosal epithelium of the tongue formed a very thick keratinized with well-developed filiform papillae in all cases. ACE2 and TMPRSS2 were consistently co-expressed in all samples in the epithelium. The S-protein was strongly expressed in basal cells and the epithelial surface. S-protein-positive viral particles were detected in the tongue's stratified squamous epithelium via an immunoelectron microscope. Based on PCR amplification of the N1 and N2 regions, the SARS-CoV-2 gene was detected on the tongue epithelium, tongue submucosa, and in tongue debris. This suggests that tongue debris, including the squamous epithelial tissue, could be a source of SARS-CoV-2 in saliva. Furthermore, removing tongue debris may decrease the amount of SARS-CoV-2 in the oral cavity.</p>","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":"56 2","pages":"29-37"},"PeriodicalIF":2.4,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/50/76/ahc-56-29.PMC10139837.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9387110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Application of Immunohistochemistry in Clinical Practices as a Standardized Assay for Breast Cancer. 免疫组织化学作为乳腺癌标准化检测在临床实践中的应用。
IF 2.4 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2023-02-28 DOI: 10.1267/ahc.22-00050
Shinobu Masuda, Yoko Nakanishi
{"title":"Application of Immunohistochemistry in Clinical Practices as a Standardized Assay for Breast Cancer.","authors":"Shinobu Masuda,&nbsp;Yoko Nakanishi","doi":"10.1267/ahc.22-00050","DOIUrl":"https://doi.org/10.1267/ahc.22-00050","url":null,"abstract":"<p><p>Immunohistochemistry (IHC) has become an indispensable tool in the clinical practices for breast cancer; however, to achieve its standardization, numerous issues need to be overcome. In this review, we describe the development of IHC as an important clinical tool, and the challenges in standardizing IHC results for patients. We also present ideas for resolving the remaining issues and unmet needs, along with future directions.</p>","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":"56 1","pages":"1-8"},"PeriodicalIF":2.4,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a8/a4/ahc-56-1.PMC9986307.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9434656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Protective Effect of Silymarin on Liver in Experimental in the Sepsis Model of Rats. 水飞蓟素对败血症模型大鼠肝脏的保护作用
IF 1.6 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2023-02-28 Epub Date: 2023-02-25 DOI: 10.1267/ahc.22-00059
Nevra Aydemir Celep, Semin Gedikli
{"title":"Protective Effect of Silymarin on Liver in Experimental in the Sepsis Model of Rats.","authors":"Nevra Aydemir Celep, Semin Gedikli","doi":"10.1267/ahc.22-00059","DOIUrl":"10.1267/ahc.22-00059","url":null,"abstract":"<p><p>This study, it was investigated whether silymarin has a protective effect by performing histological, immunohistochemical, and biochemical evaluations on the liver damage induced by cecal ligation perforation (CLP). CLP model was established and silymarin was treated at a dose of 50 mg/kg, 100 mg/kg, and 200 mg/kg, by oral one hour before the CLP. As an effect of the histological evaluations of the liver tissues, venous congestion, inflammation, and necrosis in the hepatocytes were observed in the CLP group. A situation close to the control group was observed in the Silymarin (SM)100 and SM200 groups. As a result of the immunohistochemical evaluations, inducible nitric oxide synthase (iNOS), cytokeratine (CK)18, Tumor necrosis factor-alpha (TNF-α), and interleukine (IL)-6 immunoreactivities were intense in the CLP group. In the biochemical analysis, Alkaline Phosphatase (ALP), Aspartate Aminotransferase (AST), and Alanine Aminotransferase (ALT) levels were significantly increased in the CLP group, while a significant decrease was observed in the treatment groups. TNFα, IL-1β, and IL-6 concentrations were in parallel with histopathological evaluations. In the biochemical analysis, Malondialdehyte (MDA) level increased significantly in the CLP group, but there was a significant decrease in the SM100 and SM200 groups. Glutathione (GSH), Superoxide Dismutase (SOD), Catalase (CAT), and Glutathione Peroxidase (GSH-Px) activities were relatively low in the CLP group. According to these data, it was concluded that using silymarin reduces the existing liver damage in sepsis.</p>","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":"56 1","pages":"9-19"},"PeriodicalIF":1.6,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/15/46/ahc-56-9.PMC9986308.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9137234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Cathepsin D Inhibits Angiogenesis in Pituitary Neuroendocrine Tumors. 组织蛋白酶D抑制垂体神经内分泌肿瘤血管生成。
IF 2.4 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2022-12-28 DOI: 10.1267/ahc.22-00098
Ren Fujiwara, Hirotomo Ten, Hui Chen, Chuan-Lu Jiang, Ken-Ichi Oyama, Keisuke Onoda, Akira Matsuno
{"title":"Cathepsin D Inhibits Angiogenesis in Pituitary Neuroendocrine Tumors.","authors":"Ren Fujiwara,&nbsp;Hirotomo Ten,&nbsp;Hui Chen,&nbsp;Chuan-Lu Jiang,&nbsp;Ken-Ichi Oyama,&nbsp;Keisuke Onoda,&nbsp;Akira Matsuno","doi":"10.1267/ahc.22-00098","DOIUrl":"https://doi.org/10.1267/ahc.22-00098","url":null,"abstract":"<p><p>Prolactin and growth hormone can acquire anti-angiogenic properties after undergoing proteolytic cleavage by Cathepsin D and bone morphogenetic protein 1 (BMP-1) into fragments known as vasoinhibins. Little is known about the effect of vasoinhibins on angiogenesis through the involvement of key cleavage enzymes Cathepsin D and BMP-1 in pituitary neuroendocrine tumors (PitNETs, formerly pituitary adenomas). The purpose of this study was to investigate the mechanism of action of Cathepsin D and BMP-1 on angiogenesis in PitNETs compared with that of pro-angiogenic factors, including vascular endothelial growth factor (VEGF) and basic fibroblast growth factor-2 (FGF2). A total of 43 patients were enrolled in a retrospective analysis and 22 samples were suitable for RNA extraction, including 16 nonfunctional PitNETs and six somatotroph tumors. The mRNA and protein levels of Cathepsin D, BMP-1, VEGF, and FGF2 were compared with those of von Willebrand factor, which was assessed to determine the vascularization of PitNETs. Cathepsin D and FGF2 were significantly correlated with vascularization in PitNETs. Both Cathepsin D and FGF2 are highly involved in angiogenesis in PitNETs, although the effect of Cathepsin D as an anti-angiogenic factor is dominant over that of FGF2 as a pro-angiogenic factor.</p>","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":"55 6","pages":"203-211"},"PeriodicalIF":2.4,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a7/a9/ahc-055-203.PMC9840469.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10607111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Erratum: An Advanced Detection System for In Situ Hybridization Using a Fluorescence Resonance Energy Transfer-based Molecular Beacon Probe [Acta Histochem. Cytochem. 55, 119-128 (2022)]. 勘误:使用基于荧光共振能量转移的分子信标探针进行原位杂交的先进检测系统[组织化学学报]。中国生物医学工程学报,2016,33(2):444 - 444。
IF 2.4 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2022-12-28 DOI: 10.1267/ahc.22-00110E
{"title":"Erratum: An Advanced Detection System for <i>In Situ</i> Hybridization Using a Fluorescence Resonance Energy Transfer-based Molecular Beacon Probe [Acta Histochem. Cytochem. 55, 119-128 (2022)].","authors":"","doi":"10.1267/ahc.22-00110E","DOIUrl":"https://doi.org/10.1267/ahc.22-00110E","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.1267/ahc.22-00075.].</p>","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":"55 6","pages":"213"},"PeriodicalIF":2.4,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/97/eb/ahc-055-213.PMC9840468.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10563387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Low Doses of Bisphenol A Disrupt Neuronal Differentiation of Human Neuronal Stem/Progenitor Cells. 低剂量双酚A破坏人神经干/祖细胞的神经分化
IF 2.4 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2022-12-28 DOI: 10.1267/ahc.22-00090
Kaori Kiso-Farnè, Takeshi Yaoi, Takahiro Fujimoto, Kyoko Itoh
{"title":"Low Doses of Bisphenol A Disrupt Neuronal Differentiation of Human Neuronal Stem/Progenitor Cells.","authors":"Kaori Kiso-Farnè,&nbsp;Takeshi Yaoi,&nbsp;Takahiro Fujimoto,&nbsp;Kyoko Itoh","doi":"10.1267/ahc.22-00090","DOIUrl":"https://doi.org/10.1267/ahc.22-00090","url":null,"abstract":"Bisphenol A (BPA) is an endocrine disrupting chemical. Human epidemiological studies have suggested that adverse neurobehavioral outcomes are induced by fetal exposure to BPA. The remarkable differences in the corticogenesis between human and agyrencephalic mammals are an increase in the intermediate progenitor cells (IPCs) and a following increase in the subplate thickness. It is uncertain whether low doses of BPA (low-BPA) affect human early corticogenesis when basal progenitor cells (BPs) produce IPCs resulting in amplified neurogenesis. In this study, human-derived neuronal stem/progenitor cells were exposed to low-BPA or the vehicle only, and the resultant cell type-specific molecular changes and morphology were analyzed. We focused on stem cells immunoreactive for SOX2, BPs for NHLH1, and immature neurons for DCX. SOX2-positive cells significantly decreased at day in vitro (DIV) 4 and 7, whereas NHLH1-positive cells tended to be higher, while DCX-positive cells significantly increased at DIV7 when exposed to 100 nM of BPA compared with the vehicle. Morphologically DCX-positive cells showed a decrease in unipolar cells and an increase in multipolar cells when exposed to 100 nM of BPA compared with the vehicle. These results provide insights into the in vivo effect of low-BPA on neuronal differentiation in the human fetal corticogenesis.","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":"55 6","pages":"193-202"},"PeriodicalIF":2.4,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d3/42/ahc-055-193.PMC9840471.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9176486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Immunohistochemical Localization of Alogliptin, a DPP-4 Inhibitor, in Tissues of Normal and Type 2 Diabetes Model Rat. DPP-4抑制剂阿格列汀在正常和2型糖尿病模型大鼠组织中的免疫组织化学定位
IF 2.4 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2022-12-28 DOI: 10.1267/ahc.22-00032
Yutaro Yamamoto, Kanae Ura, Takuma Matsukawa, Tetsuya Saita, Masashi Shin
{"title":"Immunohistochemical Localization of Alogliptin, a DPP-4 Inhibitor, in Tissues of Normal and Type 2 Diabetes Model Rat.","authors":"Yutaro Yamamoto,&nbsp;Kanae Ura,&nbsp;Takuma Matsukawa,&nbsp;Tetsuya Saita,&nbsp;Masashi Shin","doi":"10.1267/ahc.22-00032","DOIUrl":"https://doi.org/10.1267/ahc.22-00032","url":null,"abstract":"<p><p>We investigated the pharmacokinetics of alogliptin (AG) at the cell and tissue level in healthy Wistar rats and a type 2 diabetic Goto-Kakizaki (GK) rat model. Immunohistochemistry of the renal tissue in these rats, post 1 hr of AG administration, showed that the signal was observed in the glomeruli, proximal tubule S3 segments, distal tubules, collecting ducts, and only in the brush border of the epithelial cells of the proximal tubule S1, S2 segments. After 6 hr of AG administration, the staining intensity of the regions other than the S3 segments was considerably reduced in Wistar rats, with no change observed in GK rats. At 24 hr, the staining intensity was considerably reduced, even in GK rats; however, the staining of the S3 segment remained unaltered in both. Hepatocytes in zone III of the hepatic lobule were more intensely stained than those in zone I in Wistar rats at 1 hr. However, almost no staining was observed in the hepatocytes of GK rats at 1 hr. Complete loss of signal was observed in the hepatocytes of the Wistar rats after 6 hr. This study revealed that the pharmacokinetics of AG in GK rats are different from those in Wistar rats.</p>","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":"55 6","pages":"185-192"},"PeriodicalIF":2.4,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ff/80/ahc-055-185.PMC9840470.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10661773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Role of Cancer Stem-like Cells in the Process of Invasion and Mesenchymal Transformation by a Reconstituted Triple-negative Breast Cancer Cell Population Resistant to p53-induced Apoptosis. 肿瘤干细胞样细胞在抗p53诱导凋亡重组三阴性乳腺癌细胞群侵袭和间充质转化过程中的作用
IF 2.4 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2022-10-28 Epub Date: 2022-10-25 DOI: 10.1267/ahc.22-00076
Sana Inoue, Miki Imanishi, Ai Kanzaki, Atsumi Fujimoto, Marina Maeyama, Ayaka Okamoto, Hiroka Matsuda, Kiyotsugu Yoshikawa, Rei Takahashi
{"title":"Role of Cancer Stem-like Cells in the Process of Invasion and Mesenchymal Transformation by a Reconstituted Triple-negative Breast Cancer Cell Population Resistant to p53-induced Apoptosis.","authors":"Sana Inoue,&nbsp;Miki Imanishi,&nbsp;Ai Kanzaki,&nbsp;Atsumi Fujimoto,&nbsp;Marina Maeyama,&nbsp;Ayaka Okamoto,&nbsp;Hiroka Matsuda,&nbsp;Kiyotsugu Yoshikawa,&nbsp;Rei Takahashi","doi":"10.1267/ahc.22-00076","DOIUrl":"https://doi.org/10.1267/ahc.22-00076","url":null,"abstract":"<p><p>We investigated the role of cancer stem cells (CSCs) in a population of triple-negative breast cancer (TNBC) cells that are resistant to apoptosis. A human breast cancer cell population capable of inducing p53 expression with doxycycline (Dox) was created and used as an untreated control (UT). After the addition of Dox to UT for 5 days, the cell population reconstituted with cells showing resistance to apoptosis was named RE. Fluorescence-activated cell sorting (FACS) and immunostaining revealed that after the addition of Dox, the ratio of cells in the S and G2/M phases decreased in UT as apoptosis proceeded, but did not markedly change in apoptosis-resistant RE. CSC-like cells in RE exhibited a cell morphology with a larger ratio of the major/minor axis than UT. FACS showed that RE had a higher proportion of CSC-like cells and contained more CD44<sup>+</sup>CD24<sup>-</sup> mesenchymal CSCs than ALDH1A3<sup>+</sup> epithelial-like CSCs. In a Matrigel invasion assay, UT was more likely to form a three-dimensional cell population, whereas RE exhibited a planar population, higher migration ability, and the up-regulated expression of epithelial-mesenchymal transition-related genes. These results provide insights into the mechanisms by which TNBC cells acquire treatment resistance at the time of recurrence.</p>","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":" ","pages":"169-184"},"PeriodicalIF":2.4,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/2f/c2/ahc-055-169.PMC9631983.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40697213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1
Optimized Mouse-on-mouse Immunohistochemical Detection of Mouse ESR2 Proteins with PPZ0506 Monoclonal Antibody. PPZ0506单克隆抗体优化小鼠ESR2蛋白的小鼠对小鼠免疫组化检测
IF 2.4 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2022-10-28 Epub Date: 2022-10-25 DOI: 10.1267/ahc.22-00043
Mina Ozawa, Yujiro Hattori, Shimpei Higo, Mai Otsuka, Keisuke Matsumoto, Hitoshi Ozawa, Hirotaka Ishii
{"title":"Optimized Mouse-on-mouse Immunohistochemical Detection of Mouse ESR2 Proteins with PPZ0506 Monoclonal Antibody.","authors":"Mina Ozawa,&nbsp;Yujiro Hattori,&nbsp;Shimpei Higo,&nbsp;Mai Otsuka,&nbsp;Keisuke Matsumoto,&nbsp;Hitoshi Ozawa,&nbsp;Hirotaka Ishii","doi":"10.1267/ahc.22-00043","DOIUrl":"https://doi.org/10.1267/ahc.22-00043","url":null,"abstract":"<p><p>Despite the physiological significance of ESR2, a lack of well-validated detection systems for ESR2 proteins has hindered progress in ESR2 research. Thus, recent identification of a specific anti-human ESR2 monoclonal antibody (PPZ0506) and its specific cross-reactivity against mouse and rat ESR2 proteins heightened momenta toward development of appropriate immunohistochemical detection systems for rodent ESR2 proteins. Building upon our previous optimization of ESR2 immunohistochemical detection in rats using PPZ0506, in this study, we further aimed to optimize mouse-on-mouse immunohistochemical detection using PPZ0506. Our assessment of several staining conditions using paraffin-embedded ovary sections revealed that intense heat-induced antigen retrieval, appropriate blocking, and appropriate antibody dilutions were necessary for optimization of mouse-on-mouse immunohistochemistry. Subsequently, we applied the optimized immunostaining method to determine expression profiles of mouse ESR2 proteins in peripheral tissues and brain subregions. Our analyses revealed more localized distribution of mouse ESR2 proteins than previously assumed. Moreover, comparison of these results with those obtained in humans and rats using PPZ0506 revealed interspecies differences in ESR2 expression. We expect that our optimized methodology for immunohistochemical staining of mouse ESR2 proteins will help researchers to solve multiple lines of controversial evidence concerning ESR2 expression.</p>","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":" ","pages":"159-168"},"PeriodicalIF":2.4,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/1e/6b/ahc-055-159.PMC9631985.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40698206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 4
An Advanced Detection System for In Situ Hybridization Using a Fluorescence Resonance Energy Transfer-based Molecular Beacon Probe. 基于荧光共振能量转移分子信标探针的原位杂交先进检测系统。
IF 2.4 4区 生物学
Acta Histochemica Et Cytochemica Pub Date : 2022-10-28 DOI: 10.1267/ahc.22-00075
Narantsog Choijookhuu, Yasuaki Shibata, Takumi Ishizuka, Yan Xu, Takehiko Koji, Yoshitaka Hishikawa
{"title":"An Advanced Detection System for <i>In Situ</i> Hybridization Using a Fluorescence Resonance Energy Transfer-based Molecular Beacon Probe.","authors":"Narantsog Choijookhuu,&nbsp;Yasuaki Shibata,&nbsp;Takumi Ishizuka,&nbsp;Yan Xu,&nbsp;Takehiko Koji,&nbsp;Yoshitaka Hishikawa","doi":"10.1267/ahc.22-00075","DOIUrl":"https://doi.org/10.1267/ahc.22-00075","url":null,"abstract":"<p><p><i>In situ</i> hybridization (ISH) is a powerful method for detecting specific RNAs at the cellular level. Although conventional ISH using hapten-labeled probes are useful for detecting multiple RNAs, the detection procedures are still complex and required longer time. Therefore, we introduced a new application of fluorescence resonance energy transfer (FRET)-based molecular beacon (MB) probes for ISH. MCF-7 cells and C57BL/6J mouse uterus were used for ISH. MB probes for ERα mRNA and 28S rRNA were labeled with Cy3/BHQ-2 and 6-FAM/DABCYL, and conventional probes were labeled with digoxigenin. Fluorescence measurements revealed that of more-rapid hybridization kinetics compared to conventional probes. In MCF-7 cells, 28S rRNA was detected in nucleolus and cytoplasm of all cells, whereas ERα mRNA was detected in some nucleolus. In the uterus, 28S rRNA was clearly detected using complementary MB probe, but there were no signals in control slides. Moreover, 28S rRNA was detected in all cells, whereas ERα mRNA was detected mainly in the epithelium. Fluorescence intensity of 28S rRNA was decreased significantly in 1 or 2 base-mismatched sequences, that indicates highly specific detection of target RNAs. In conclusion, the FRET-based MB probes are very useful for ISH, providing rapid hybridization, high sensitivity and specificity.</p>","PeriodicalId":6888,"journal":{"name":"Acta Histochemica Et Cytochemica","volume":"55 5","pages":"119-128"},"PeriodicalIF":2.4,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ae/9a/ahc-055-119.PMC9631986.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9108416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 4
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