|
1
|
Katsuragi SY, Sakano Y, Ohta I, Kato H, Ishikawa R, Watanabe H, Miyazaki R, Yoshimura K, Yamada H, Sakai Y, Inoue Y, Takanashi Y, Sekihara K, Funai K, Otsuki Y, Kawasaki H, Shinmura K. Diagnostic Utility of Podoplanin Immunohistochemistry Combined with the NanoSuit-Correlative Light and Electron Microscopy Method for Thoracic Malignant Tumors. Diagnostics (Basel) 2025; 15:1298. [PMID: 40428290 PMCID: PMC12109644 DOI: 10.3390/diagnostics15101298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2025] [Revised: 05/12/2025] [Accepted: 05/19/2025] [Indexed: 05/29/2025] Open
Abstract
Background/Objectives: Differentiating thoracic malignant tumors, such as epithelioid malignant pleural mesothelioma (EMPM) and non-small-cell lung carcinoma (NSCLC), primarily comprising lung adenocarcinoma (LAC) and lung squamous cell carcinoma (LSCC), remains a challenge in routine pathological diagnosis. This study aimed to evaluate whether podoplanin (PDPN) immunohistochemistry combined with scanning electron microscopy (SEM) using the NanoSuit-correlative light and electron microscopy (CLEM) methods could serve as a reliable tool for distinguishing these thoracic malignancies. Methods/Results: Initially, PDPN expression was assessed by immunohistochemical analysis in 11 EMPM, 100 LAC, and 23 LSCC cases. PDPN positivity was predominantly observed in the cell membrane and was significantly more frequent in EMPM (100%) than in LAC (2%; p < 0.0001) or LSCC (43.5%; p = 0.0018). Subsequently, field emission-SEM (FE-SEM) observations of PDPN-positive sites on immunohistochemical slides, conducted using the NanoSuit-CLEM method, revealed distinctive ultrastructural features. EMPM exhibited densely packed, elongated microvilli, whereas such structures were absent in LAC and LSCC. Furthermore, analysis of thick-cut sections (20 μm) demonstrated extensive microvilli coverage characteristic of EMPM. Conclusions: These findings suggest that the combined approach of PDPN immunohistochemistry and FE-SEM observation of PDPN-positive sites, using the NanoSuit-CLEM method, constitutes an effective diagnostic strategy for enhancing the accuracy of distinguishing EMPM from NSCLCs.
Collapse
Affiliation(s)
- Shin-ya Katsuragi
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (S.-y.K.); (H.K.); (R.I.); (H.W.); (R.M.); (K.Y.); (H.Y.); (Y.S.)
| | - Yuri Sakano
- NanoSuit Research Laboratory, Division of Preeminent Bioimaging Research, Institute of Photonics Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan;
| | - Isao Ohta
- Advanced Research Facilities and Services, Division of Preeminent Research Supports, Institute of Photonics Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan;
| | - Hisami Kato
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (S.-y.K.); (H.K.); (R.I.); (H.W.); (R.M.); (K.Y.); (H.Y.); (Y.S.)
| | - Rei Ishikawa
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (S.-y.K.); (H.K.); (R.I.); (H.W.); (R.M.); (K.Y.); (H.Y.); (Y.S.)
| | - Hirofumi Watanabe
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (S.-y.K.); (H.K.); (R.I.); (H.W.); (R.M.); (K.Y.); (H.Y.); (Y.S.)
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan;
| | - Ryosuke Miyazaki
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (S.-y.K.); (H.K.); (R.I.); (H.W.); (R.M.); (K.Y.); (H.Y.); (Y.S.)
| | - Katsuhiro Yoshimura
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (S.-y.K.); (H.K.); (R.I.); (H.W.); (R.M.); (K.Y.); (H.Y.); (Y.S.)
| | - Hidetaka Yamada
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (S.-y.K.); (H.K.); (R.I.); (H.W.); (R.M.); (K.Y.); (H.Y.); (Y.S.)
| | - Yasuhiro Sakai
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (S.-y.K.); (H.K.); (R.I.); (H.W.); (R.M.); (K.Y.); (H.Y.); (Y.S.)
| | - Yusuke Inoue
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan;
| | - Yusuke Takanashi
- Department of Surgery 1, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (Y.T.); (K.S.); (K.F.)
| | - Keigo Sekihara
- Department of Surgery 1, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (Y.T.); (K.S.); (K.F.)
| | - Kazuhito Funai
- Department of Surgery 1, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (Y.T.); (K.S.); (K.F.)
| | - Yoshiro Otsuki
- Department of Pathology, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan;
| | - Hideya Kawasaki
- NanoSuit Research Laboratory, Division of Preeminent Bioimaging Research, Institute of Photonics Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan;
| | - Kazuya Shinmura
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan; (S.-y.K.); (H.K.); (R.I.); (H.W.); (R.M.); (K.Y.); (H.Y.); (Y.S.)
| |
Collapse
|
|
2
|
Yu L, Zhou S, Hong W, Lin N, Wang Q, Liang P. Characterization of an endoplasmic reticulum stress-associated lncRNA prognostic signature and the tumor-suppressive role of RP11-295G20.2 knockdown in lung adenocarcinoma. Sci Rep 2024; 14:12283. [PMID: 38811828 PMCID: PMC11137026 DOI: 10.1038/s41598-024-62836-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 05/22/2024] [Indexed: 05/31/2024] Open
Abstract
Endoplasmic reticulum stress (ERS) is commonly induced by accumulating misfolded or unfolded proteins in tumor microenvironment. Long non-coding RNAs (lncRNAs) play important roles in ERS response and lung adenocarcinoma (LUAD) progression. However, the role of ERS-related lncRNAs in LUAD remains unknown. In this study, we aimed to identify ERS-associated lncRNAs with prognostic value in LUAD and characterize their clinical implications. Cox and least absolute shrinkage and selection operator regression analyses identified nine ERS-related lncRNAs with independent prognostic abilities, including five protective factors (CROCCP2, KIAA0125, LINC0996, RPARP-AS1 and TBX5-AS1) and four risk factors (LINC0857, LINC116, RP11-21L23.2 and RP11-295G20.2). We developed an ERS-related lncRNA risk prediction model in predicting overall survival of LUAD patients, which classified TCGA cohorts into high-risk (HS) and low-risk (LS) groups. Comprehensive bioinformatic analyses revealed HS patients featured with late-stage tumors, greater mutation burdens, weaker anti-tumor immunity/responses, and lower sensitivity to targeted drugs compared to LS patients, contributing to tumor progression and a poor prognosis. Functional enrichment analysis implicated these ERS-related lncRNAs in cell migration, cell death, and immunity. Furthermore, expression of the most significantly upregulated risk lncRNA, RP11-295G20.2, was validated at the mRNA level using clinical LUAD samples. Knockdown of RP11-295G20.2 obviously reduced ERS and suppressed proliferation, invasion, and migration of LUAD cells. This novel ERS-related lncRNA signature provides a new biomarker for prognostic prediction, and ERS-associated RP11-295G20.2 serves as a potential therapeutic target in LUAD.
Collapse
Affiliation(s)
- Liying Yu
- Central Laboratory, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China.
- Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China.
- Pathology Department, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China.
| | - Shuang Zhou
- Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Wencong Hong
- Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Na Lin
- Pathology Department, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Qingshui Wang
- Fujian-Macao Science and Technology Cooperation Base of Traditional Chinese Medicine-Oriented Chronic Disease Prevention and Treatment, Innovation and Transformation Center, Fujian University of Traditional Chinese Medicine, Fuzhou, 350001, China.
| | - Pingping Liang
- Center for Infection and Immunity, Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, 519000, China.
| |
Collapse
|