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Wanta A, Noguchi K, Sugawara T, Sonoda K, Duangchit S, Wakayama T. Expression of Protein Markers in Spermatogenic and Supporting Sertoli Cells Affected by High Abdominal Temperature in Cryptorchidism Model Mice. J Histochem Cytochem 2023:221554231185626. [PMID: 37431084 PMCID: PMC10363907 DOI: 10.1369/00221554231185626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023] Open
Abstract
Cryptorchidism is a congenital abnormality resulting in increased rates of infertility and testicular cancer. We used cryptorchidism model mice that presented with the translocation of the left testis from the scrotum to the abdominal cavity. Mice underwent the surgical procedure of the left testis at day 0 and were sacrificed at days 3, 5, 7, 14, 21, and 28 post-operatively. The weight of the left cryptorchid testis decreased significantly at days 21 and 28. The morphological changes were observed after 5 days and showed detached spermatogenic cells and abnormal formation of acrosome at day 5, multinucleated giant cells at day 7, and atrophy of seminiferous tubules at days 21 and 28. The high abdominal temperature disrupted the normal expression of cell adhesion molecule-1, Nectin-2, and Nectin-3 which are essential for spermatogenesis. In addition, the pattern and alignment of acetylated tubulin in cryptorchid testes were also changed at days 5, 7, 14, 21, and 28. Ultrastructure of cryptorchid testes revealed giant cells that had been formed by spermatogonia, spermatocytes, and round and elongating spermatids. The study's findings reveal that cryptorchidism's duration is linked to abnormal changes in the testis, impacting protein marker expression in spermatogenic and Sertoli cells. These changes stem from the induction of high abdominal temperature.
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Affiliation(s)
- Arunothai Wanta
- Department of Histology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
- School of Medicine, Mae Fah Luang University, Chiang Rai, Thailand
| | - Kazuhiro Noguchi
- Department of Histology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Taichi Sugawara
- Department of Histology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kayoko Sonoda
- Department of Histology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Suthat Duangchit
- Department of Histology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Tomohiko Wakayama
- Department of Histology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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Gordon SR, Dimovski S, Kocik N. Evidence that Nectin-3 is the soybean agglutinin binding protein on rat corneal endothelium cell surfaces. Exp Eye Res 2022; 223:109212. [PMID: 35964705 DOI: 10.1016/j.exer.2022.109212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 07/20/2022] [Accepted: 08/01/2022] [Indexed: 11/04/2022]
Abstract
The means by which the lectin soybean agglutinin (SBA) binds to the corneal endothelium cell surface following explantation into organ culture was investigated using Sprague-Dawley rats. SBA binding does not occur in freshly isolated and fixed rat corneal endothelium. However, after 48 h in organ culture, SBA binding occurs in a punctate pattern that clearly outlines all endothelial cells of the tissue monolayer. To determine what cell surface component was responsible for this binding, a series of experiments were employed that focused on the possibility that SBA bound to a nectin molecule(s). To this extent we performed a series of immunocytochemical localizations using antibodies against either nectin-2, nectin-3 or nectin-4. Of these, only nectin-3 bound to the endothelium in a manner that mimicked SBA binding. To further verify that nectin-3 bound SBA, displacement experiments employing non-labeled SBA were undertaken. Following a 48 h organ culture, tissues were fixed and incubated with SBA followed by exposure to nectin-3 antibody. No subsequent immunofluorescence could be detected, indicating that anti-nectin-3 binding was prevented. Likewise, when organ-cultured tissues were fixed and incubated in anti-nectin-3 antibody, followed by SBA exposure, no SBA binding could be detected. These results suggest that stresses accompanying explantation of the tissue into organ culture promote the appearance of nectin-3 around the cell periphery. The emergence of nectin-3 along the peripheral endothelial cell membrane in organ culture may imply a necessary role for this molecule in maintaining monolayer integrity and barrier function during either a pathologic condition, wound repair, or in organ storage.
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Affiliation(s)
- Sheldon R Gordon
- Department of Biological Sciences, 375 Dodge Hall, 118 Library Drive, Oakland, University Rochester, MI 48309-4476, United States.
| | - Samantha Dimovski
- Department of Biological Sciences, 375 Dodge Hall, 118 Library Drive, Oakland, University Rochester, MI 48309-4476, United States
| | - Nicholas Kocik
- Department of Biological Sciences, 375 Dodge Hall, 118 Library Drive, Oakland, University Rochester, MI 48309-4476, United States
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Tomorsky J, Parker PRL, Doe CQ, Niell CM. Precise levels of nectin-3 are required for proper synapse formation in postnatal visual cortex. Neural Dev 2020; 15:13. [PMID: 33160402 PMCID: PMC7648993 DOI: 10.1186/s13064-020-00150-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/22/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Developing cortical neurons express a tightly choreographed sequence of cytoskeletal and transmembrane proteins to form and strengthen specific synaptic connections during circuit formation. Nectin-3 is a cell-adhesion molecule with previously described roles in synapse formation and maintenance. This protein and its binding partner, nectin-1, are selectively expressed in upper-layer neurons of mouse visual cortex, but their role in the development of cortical circuits is unknown. METHODS Here we block nectin-3 expression (via shRNA) or overexpress nectin-3 in developing layer 2/3 visual cortical neurons using in utero electroporation. We then assay dendritic spine densities at three developmental time points: eye opening (postnatal day (P)14), one week following eye opening after a period of heightened synaptogenesis (P21), and at the close of the critical period for ocular dominance plasticity (P35). RESULTS Knockdown of nectin-3 beginning at E15.5 or ~ P19 increased dendritic spine densities at P21 or P35, respectively. Conversely, overexpressing full length nectin-3 at E15.5 decreased dendritic spine densities when all ages were considered together. The effects of nectin-3 knockdown and overexpression on dendritic spine densities were most significant on proximal secondary apical dendrites. Interestingly, an even greater decrease in dendritic spine densities, particularly on basal dendrites at P21, was observed when we overexpressed nectin-3 lacking its afadin binding domain. CONCLUSION These data collectively suggest that the proper levels and functioning of nectin-3 facilitate normal synapse formation after eye opening on apical and basal dendrites in layer 2/3 of visual cortex.
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Affiliation(s)
- Johanna Tomorsky
- Institute of Neuroscience, University of Oregon, Eugene, OR, 97403, USA.
- Department of Biology, University of Oregon, Eugene, OR, 97403, USA.
- Stanford University, 318 Campus Drive, Stanford, CA, 94305, USA.
| | - Philip R L Parker
- Institute of Neuroscience, University of Oregon, Eugene, OR, 97403, USA
- Department of Biology, University of Oregon, Eugene, OR, 97403, USA
| | - Chris Q Doe
- Institute of Neuroscience, University of Oregon, Eugene, OR, 97403, USA
- Department of Biology, University of Oregon, Eugene, OR, 97403, USA
- Institute of Molecular Biology, University of Oregon, Eugene, OR, 97403, USA
- Howard Hughes Medical Institute, University of Oregon, Eugene, OR, 97403, USA
| | - Cristopher M Niell
- Institute of Neuroscience, University of Oregon, Eugene, OR, 97403, USA.
- Department of Biology, University of Oregon, Eugene, OR, 97403, USA.
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Zhao Y, Hong XH, Li K, Li YQ, Li YQ, He SW, Zhang PP, Li JY, Li Q, Liang YL, Chen Y, Ma J, Liu N, Chen YP. ZNF582 hypermethylation promotes metastasis of nasopharyngeal carcinoma by regulating the transcription of adhesion molecules Nectin-3 and NRXN3. Cancer Commun (Lond) 2020; 40:721-737. [PMID: 33038291 PMCID: PMC7743023 DOI: 10.1002/cac2.12104] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/28/2020] [Accepted: 09/29/2020] [Indexed: 12/24/2022] Open
Abstract
Background Epigenetic regulation plays an important role in the development and progression of nasopharyngeal carcinoma (NPC). However, the epigenetic mechanisms underlying NPC metastasis remains poorly understood. We aimed to find functional genes which regulate the metastasis of NPC and identify therapeutic targets for NPC treatment. Methods Bisulfite pyrosequencing was used to analyze zinc finger protein 582 (ZNF582) methylation in NPC tissues and cell lines. Quantitative reverse transcription‐polymerase chain reaction (qRT‐PCR) and Western blotting were used to determine the expression of ZNF582. In vitro and in vivo experiments were performed to evaluate the biological function of ZNF582 in NPC. ZNF582‐targeting genes were identified by chromatin immunoprecipitation sequencing (ChIP‐seq) and were confirmed by ChIP‐qPCR and luciferase assay. Results ZNF582 promoter was hypermethylated in NPC, and both the mRNA and protein levels of ZNF582 were down‐regulated in NPC tissues and cell lines. The restoration of ZNF582 inhibited NPC migration, invasion, and metastasis, while the knockdown of ZNF582 promoted NPC migration, invasion, and metastasis in vitro and in vivo. ZNF582 directly regulated the transcription and expression of adhesion molecules Nectin‐3 and NRXN3. Both Nectin‐3 and NRXN3 were identified as functional targets of ZNF582, and the restoration or abrogation of these genes reversed the tumor suppressor effect of ZNF582 in NPC metastasis. Conclusions ZNF582 acts as a tumor suppressor gene in NPC by regulating the transcription and expression of adhesion molecules Nectin‐3 and NRXN3, which may provide novel therapeutic targets for NPC treatment.
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Affiliation(s)
- Yin Zhao
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Xiao-Hong Hong
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Kang Li
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China
| | - Ying-Qing Li
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Ying-Qin Li
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Shi-Wei He
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Pan-Pan Zhang
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Jun-Yan Li
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Qian Li
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Ye-Lin Liang
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Yang Chen
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Jun Ma
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Na Liu
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
| | - Yu-Pei Chen
- Experimental Research Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, P. R. China
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