Expression profiles of metallothionein-I/II and megalin/LRP-2 in uterine cervical squamous lesions

Metallothioneins (MTs) are phylogenetically old cysteine-rich proteins, which are implicated in a variety of physiological and pathological processes. Their growth-regulating, anti-apoptotic and anti-inflammatory functions have been attributed not only to intracellular free radical scavenging and to...

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Veröffentlicht in:Virchows Archiv : an international journal of pathology 2021-04, Vol.478 (4), p.735-746
Hauptverfasser: Jakovac, Hrvoje, Stašić, Nikola, Krašević, Maja, Jonjić, Nives, Radošević-Stašić, Biserka
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container_title Virchows Archiv : an international journal of pathology
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creator Jakovac, Hrvoje
Stašić, Nikola
Krašević, Maja
Jonjić, Nives
Radošević-Stašić, Biserka
description Metallothioneins (MTs) are phylogenetically old cysteine-rich proteins, which are implicated in a variety of physiological and pathological processes. Their growth-regulating, anti-apoptotic and anti-inflammatory functions have been attributed not only to intracellular free radical scavenging and to zinc and copper regulation but also to the ability of secreted MT to bind on surface lipoprotein receptor-megalin/LRP2, which enables the endocytosis of MT-I/II and a wide range of other functionally distinct ligands. In the present study, we analysed the expression pattern of both proteins in 55 cases of premalignant transformation of cervical squamous cells, i.e. in low- and high-grade squamous intraepithelial lesion (LSIL and HSIL). The data showed that in LSIL (cervical intraepithelial neoplasia CIN1; N  = 25) MTs were present only in basal and parabasal cells and that megalin was only weakly expressed. In HSIL (CIN2; N  = 15 and CIN 3/carcinoma in situ; N  = 15), however, overexpression and co-localization of MT with megalin were found in the entire hyperplastic epithelium. Moreover, megalin immunoreactivity appeared on the glandular epithelium and vascular endothelium, as well as on lymphatic cells in stroma. Besides, multiple megalin-positive cells expressed phosphorylated Akt1, implying that MT- and/or megalin-dependent prosurvival signal transduction pathways might contribute to the development of severe cervical dysplasia. The data emphasize the diagnostic power of combined MT/megalin analysis in pre-cancer screening.
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Their growth-regulating, anti-apoptotic and anti-inflammatory functions have been attributed not only to intracellular free radical scavenging and to zinc and copper regulation but also to the ability of secreted MT to bind on surface lipoprotein receptor-megalin/LRP2, which enables the endocytosis of MT-I/II and a wide range of other functionally distinct ligands. In the present study, we analysed the expression pattern of both proteins in 55 cases of premalignant transformation of cervical squamous cells, i.e. in low- and high-grade squamous intraepithelial lesion (LSIL and HSIL). The data showed that in LSIL (cervical intraepithelial neoplasia CIN1; N  = 25) MTs were present only in basal and parabasal cells and that megalin was only weakly expressed. In HSIL (CIN2; N  = 15 and CIN 3/carcinoma in situ; N  = 15), however, overexpression and co-localization of MT with megalin were found in the entire hyperplastic epithelium. Moreover, megalin immunoreactivity appeared on the glandular epithelium and vascular endothelium, as well as on lymphatic cells in stroma. Besides, multiple megalin-positive cells expressed phosphorylated Akt1, implying that MT- and/or megalin-dependent prosurvival signal transduction pathways might contribute to the development of severe cervical dysplasia. 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Stašić, Nikola ; Krašević, Maja ; Jonjić, Nives ; Radošević-Stašić, Biserka</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c474t-f0a3bdfa02dbe8c2905ad5c10d040f2740d770de93ba69cf808b96878685bf923</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>AKT1 protein</topic><topic>Apoptosis</topic><topic>Biomarkers, Tumor - genetics</topic><topic>Biomarkers, Tumor - metabolism</topic><topic>Cancer</topic><topic>Cancer screening</topic><topic>Carcinoma, Squamous Cell - diagnosis</topic><topic>Carcinoma, Squamous Cell - genetics</topic><topic>Carcinoma, Squamous Cell - metabolism</topic><topic>Carcinoma, Squamous Cell - pathology</topic><topic>Cervical cancer</topic><topic>Cervical Intraepithelial Neoplasia - diagnosis</topic><topic>Cervical Intraepithelial Neoplasia - genetics</topic><topic>Cervical Intraepithelial Neoplasia - metabolism</topic><topic>Cervical Intraepithelial Neoplasia - pathology</topic><topic>Cervix</topic><topic>Dysplasia</topic><topic>Early Detection of Cancer</topic><topic>Endocytosis</topic><topic>Endothelium</topic><topic>Epithelium</topic><topic>Female</topic><topic>Free radicals</topic><topic>Gene Expression Profiling</topic><topic>Gene Expression Regulation, Neoplastic</topic><topic>Human papillomavirus</topic><topic>Humans</topic><topic>Immunohistochemistry</topic><topic>Immunoreactivity</topic><topic>Inflammation</topic><topic>Lesions</topic><topic>Localization</topic><topic>Low Density Lipoprotein Receptor-Related Protein-2 - genetics</topic><topic>Low Density Lipoprotein Receptor-Related Protein-2 - metabolism</topic><topic>LRP2 protein</topic><topic>Medical screening</topic><topic>Medicine</topic><topic>Medicine &amp; 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subjects AKT1 protein
Apoptosis
Biomarkers, Tumor - genetics
Biomarkers, Tumor - metabolism
Cancer
Cancer screening
Carcinoma, Squamous Cell - diagnosis
Carcinoma, Squamous Cell - genetics
Carcinoma, Squamous Cell - metabolism
Carcinoma, Squamous Cell - pathology
Cervical cancer
Cervical Intraepithelial Neoplasia - diagnosis
Cervical Intraepithelial Neoplasia - genetics
Cervical Intraepithelial Neoplasia - metabolism
Cervical Intraepithelial Neoplasia - pathology
Cervix
Dysplasia
Early Detection of Cancer
Endocytosis
Endothelium
Epithelium
Female
Free radicals
Gene Expression Profiling
Gene Expression Regulation, Neoplastic
Human papillomavirus
Humans
Immunohistochemistry
Immunoreactivity
Inflammation
Lesions
Localization
Low Density Lipoprotein Receptor-Related Protein-2 - genetics
Low Density Lipoprotein Receptor-Related Protein-2 - metabolism
LRP2 protein
Medical screening
Medicine
Medicine & Public Health
Metallothionein
Metallothionein - genetics
Metallothionein - metabolism
Metallothioneins
Original
Original Article
Pathology
Pattern analysis
Phylogeny
Proteins
Scavenging
Signal transduction
Squamous cells
Stroma
Transcriptome
Tumor Microenvironment
Uterine Cervical Neoplasms - diagnosis
Uterine Cervical Neoplasms - genetics
Uterine Cervical Neoplasms - metabolism
Uterine Cervical Neoplasms - pathology
Uterus
title Expression profiles of metallothionein-I/II and megalin/LRP-2 in uterine cervical squamous lesions
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