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Liu Y, Zhang H, Li X, Wang S, Zhang Y, Zhang X, Xu T, Dong Y, Dong L, Zhou L, Yang X, Wang C. Papillary renal neoplasm with reverse polarity with a favorable prognosis should be separated from papillary renal cell carcinoma. Hum Pathol 2022; 127:78-85. [PMID: 35724772 DOI: 10.1016/j.humpath.2022.06.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 11/16/2022]
Abstract
Papillary renal neoplasm with reverse polarity (PRNRP) is a newly documented renal entity with an easily recognizable morphology, distinct immunohistochemical profiles, and frequent KRAS mutations. The latest practice guidelines regard PRNRP as a subtype of papillary renal cell carcinoma due to the documented chromosomal alterations of 7, 17, and Y. This study included 20 patients with PRNRP and 30 patients with PRCC. Statistically significant differences were observed in size, WHO/ISUP grade, macrophages in the papillae, reverse polarity, CK7, basolateral positivity for Claudin7, GATA3 expression, KRAS mutation, and chromosomal alterations. No adverse events such as perinephric invasion, lymphovascular invasion, sarcomatoid of rhabdoid differentiation, metastasis, or recurrence were found in PRNRP. However, PRCC can cause these adverse events. Basolateral positivity for Claudin7 together with GATA3 expression indicated distal tubule derivation of PRNRP. KRAS mutations were detected in 89% (16/18) of PRNRP. No KRAS mutations were detected in PRCC. Six patients with PRNRP had one chromosomal alteration and the other 12 had no chromosomal alterations. However, only four patients with PRCC showed no chromosomal alterations. Eighteen patients had two or three chromosomal alterations. PRCC can metastasize, recur, and even cause death, whereas PRNRP has a favorable prognosis. We recommend that PRNRP should be separated from PRCC and partial nephrectomy is more suitable for PRNRP.
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Affiliation(s)
- Yang Liu
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huizhi Zhang
- Ningbo Clinical Pathology Diagnosis Center, Ningbo, Zhejiang, China
| | - Xiangyun Li
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Suying Wang
- Ningbo Clinical Pathology Diagnosis Center, Ningbo, Zhejiang, China
| | - Yuxiu Zhang
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuemin Zhang
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Teng Xu
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yihan Dong
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lei Dong
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Luting Zhou
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Xiaoqun Yang
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Chaofu Wang
- Department of Pathology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Lee YG, Lee SH, Hong J, Lee PH, Jang AS. Titanium dioxide particles modulate epithelial barrier protein, Claudin 7 in asthma. Mol Immunol 2021; 132:209-216. [PMID: 33483086 DOI: 10.1016/j.molimm.2021.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/15/2020] [Accepted: 01/04/2021] [Indexed: 02/06/2023]
Abstract
Epithelial barrier dysfunction is involved in allergic inflammation and asthma, due to increased exposure of sub-epithelial tissues to inhaled allergens and air pollutants. The tight junction proteins claudins (CLDNs) are important regulators of paracellular permeability. CLDN7 is expressed in the alveolar epithelium; however, its contribution to airway barrier function remains unclear. The aim of this study was to assess the effects of TiO2 on epithelial barrier function in asthma. Mice were sensitized and challenged with OVA or exposed to TiO2 on days 21-23. The effect of TiO2 on CLDN7 was assessed by ELISA, immunoblotting, and immunohistochemical analysis. The levels of CLDN7 in the plasma of patients with asthma and healthy individuals were also examined. CLDN7 levels were lower in plasma from patients with asthma compared with healthy individuals. CLDN7 levels were associated with FEV1/FVC and the blood eosinophils (%) in patients with asthma. Although CLDN7 expression was elevated in the lungs of mice with asthma and in NHBE cells treated with HDM extracts, its expression was suppressed by exposure to TiO2. p-AKT and p-ERK was increased in asthmatic mice and decreased in mice with TiO2 treatment. p-AKT and p-ERK was decreased in NHBE cells treated with TiO2 and HDM extracts. Trans-epithelial electrical resistance (TEER) was higher in NHBE cells treated with TiO2 or HDM extracts; however, this was decreased by concurrent TiO2 and HDM extracts treatment. Our data suggest that particulate matter contributes to airway epithelial barrier dysfunction and results in airway inflammation and responsiveness.
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Affiliation(s)
- Yun-Gi Lee
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, 14584, Republic of Korea
| | - Sun-Hye Lee
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, 14584, Republic of Korea
| | - Jisu Hong
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, 14584, Republic of Korea
| | - Pureun-Haneul Lee
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, 14584, Republic of Korea
| | - An-Soo Jang
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, 14584, Republic of Korea.
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Kyuno D, Bauer N, Schnölzer M, Provaznik J, Ryschich E, Hackert T, Zöller M. Distinct Origin of Claudin7 in Early Tumor Endosomes Affects Exosome Assembly. Int J Biol Sci 2019; 15:2224-2239. [PMID: 31592143 PMCID: PMC6775303 DOI: 10.7150/ijbs.35347] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 03/30/2019] [Accepted: 07/11/2019] [Indexed: 12/28/2022] Open
Abstract
Microvesicles are the body's most powerful intercellular communication system and cancer-initiating cell microvesicles (CIC-TEX) reprogram Non-CIC towards fortified malignancy. Claudin7, a CIC-biomarker in gastrointestinal tumors, is recovered in TEX. Recent evidence suggesting individual cells delivering distinct microvesicles became of particular interest for claudin7, which is part of tight junctions (TJ) and glycolipid-enriched membrane domains (GEM), GEM-located claudin7 is palmitoylated. This offered the unique possibility of exploring the contribution of a CIC marker and its origin from distinct membrane domains on CIC-TEX biogenesis and activities. Proteome and miRNA analysis of wild-type, claudin7-knockdown and a rescue with claudin7 harboring a mutated palmitoylation site (mP) of a rat pancreatic and a human colon cancer line uncovered significant, only partly overlapping contributions of palmitoylated and non-palmitoylated claudin7 to TEX composition. Palmitoylated claudin7 facilitates GEM-integrated plasma membrane and associated signaling molecule recruitment; non-palmitoylated claudin7 supports recruitment of trafficking components, proteins engaged in fatty acid metabolism and TJ proteins into TEX. Claudin7mP also assists TEX recovery of selected miRNA. Thus, distinctly located claudin7 affects CIC-TEX composition and TJ-derived cld7 might play a unique role in equipping CIC-TEX with transporters and lipid metabolism-regulating molecules, awareness of distinct TEX populations being crucial facing therapeutic translation.
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Affiliation(s)
- Daisuke Kyuno
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany.,Department of Surgery, Surgical Oncology and Science, Sapporo Medical University, Sapporo, Japan
| | - Nathalie Bauer
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | | | | | - Eduard Ryschich
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Thilo Hackert
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Margot Zöller
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
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