E-cadherin to P-cadherin switching in lobular breast cancer with tubular elements

Loss of E-cadherin expression due to mutation of the CDH1 gene is a characteristic feature of invasive lobular breast cancer (ILBC). Beta-catenin, which binds to the cytoplasmic domain of E-cadherin, is simultaneously downregulated, reflecting disassembly of adherens junctions (AJs) and loss of cell...

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Veröffentlicht in:Modern pathology 2020-12, Vol.33 (12), p.2483-2498
Hauptverfasser: Christgen, Matthias, Bartels, Stephan, van Luttikhuizen, Jana L., Bublitz, Janin, Rieger, Luisa U., Christgen, Henriette, Stark, Helge, Sander, Bjoern, Lehmann, Ulrich, Steinemann, Doris, Derksen, Patrick W.B., Kreipe, Hans
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container_end_page 2498
container_issue 12
container_start_page 2483
container_title Modern pathology
container_volume 33
creator Christgen, Matthias
Bartels, Stephan
van Luttikhuizen, Jana L.
Bublitz, Janin
Rieger, Luisa U.
Christgen, Henriette
Stark, Helge
Sander, Bjoern
Lehmann, Ulrich
Steinemann, Doris
Derksen, Patrick W.B.
Kreipe, Hans
description Loss of E-cadherin expression due to mutation of the CDH1 gene is a characteristic feature of invasive lobular breast cancer (ILBC). Beta-catenin, which binds to the cytoplasmic domain of E-cadherin, is simultaneously downregulated, reflecting disassembly of adherens junctions (AJs) and loss of cell adhesion. E-cadherin to P-cadherin expression switching can rescue AJs and cell adhesion. However, P-cadherin has not been implicated in ILBC, so far. We aimed to characterize 13 ILBCs with exceptional histomorphology, which we termed ILBCs with tubular elements. The CDH1 mutational status was determined by next generation sequencing and whole-genome copy number (CN) profiling. Expression of cadherins was assessed by immunohistochemistry. ILBCs with tubular elements were ER-positive (13/13) and HER2-negative (13/13) and harbored deleterious CDH1 mutations (11/13) accompanied by loss of heterozygosity due to deletion of chromosome 16q22.1 (9/11). E-cadherin expression was lost or reduced in noncohesive tumor cells and in admixed tubular elements (13/13). Beta-catenin expression was lost in noncohesive tumor cells, but was retained in tubular elements (11/13), indicating focal rescue of AJ formation. N-cadherin and R-cadherin were always negative (0/13). Strikingly, P-cadherin was commonly positive (12/13) and immunoreactivity was accentuated in tubular elements. Adjacent lobular carcinoma in situ (LCIS) was always P-cadherin-negative (0/7). In a reference cohort of LCIS specimens, P-cadherin was constantly not expressed (0/25). In a reference cohort of invasive mammary carcinomas, P-cadherin-positive cases (36/268, 13%) were associated with triple-negative nonlobular breast cancer (P < 0.001). Compared with ILBCs from the reference cohort, P-cadherin expression was more common in ILBCs with tubular elements (12/13 versus 7/84, P < 0.001). In summary, E-cadherin to P-cadherin switching occurs in a subset of ILBCs. P-cadherin is the molecular determinant of a mixed-appearing histomorphology in ILBCs with tubular elements.
doi_str_mv 10.1038/s41379-020-0591-3
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Beta-catenin, which binds to the cytoplasmic domain of E-cadherin, is simultaneously downregulated, reflecting disassembly of adherens junctions (AJs) and loss of cell adhesion. E-cadherin to P-cadherin expression switching can rescue AJs and cell adhesion. However, P-cadherin has not been implicated in ILBC, so far. We aimed to characterize 13 ILBCs with exceptional histomorphology, which we termed ILBCs with tubular elements. The CDH1 mutational status was determined by next generation sequencing and whole-genome copy number (CN) profiling. Expression of cadherins was assessed by immunohistochemistry. ILBCs with tubular elements were ER-positive (13/13) and HER2-negative (13/13) and harbored deleterious CDH1 mutations (11/13) accompanied by loss of heterozygosity due to deletion of chromosome 16q22.1 (9/11). E-cadherin expression was lost or reduced in noncohesive tumor cells and in admixed tubular elements (13/13). Beta-catenin expression was lost in noncohesive tumor cells, but was retained in tubular elements (11/13), indicating focal rescue of AJ formation. N-cadherin and R-cadherin were always negative (0/13). Strikingly, P-cadherin was commonly positive (12/13) and immunoreactivity was accentuated in tubular elements. Adjacent lobular carcinoma in situ (LCIS) was always P-cadherin-negative (0/7). In a reference cohort of LCIS specimens, P-cadherin was constantly not expressed (0/25). In a reference cohort of invasive mammary carcinomas, P-cadherin-positive cases (36/268, 13%) were associated with triple-negative nonlobular breast cancer (P &lt; 0.001). Compared with ILBCs from the reference cohort, P-cadherin expression was more common in ILBCs with tubular elements (12/13 versus 7/84, P &lt; 0.001). In summary, E-cadherin to P-cadherin switching occurs in a subset of ILBCs. P-cadherin is the molecular determinant of a mixed-appearing histomorphology in ILBCs with tubular elements.</description><identifier>ISSN: 0893-3952</identifier><identifier>EISSN: 1530-0285</identifier><identifier>DOI: 10.1038/s41379-020-0591-3</identifier><identifier>PMID: 32572153</identifier><language>eng</language><publisher>New York: Elsevier Inc</publisher><subject>13/105 ; 14/1 ; 45/22 ; 45/23 ; 631/67/1347 ; 631/80/79 ; Adherens junctions ; Adult ; Aged ; Antigens, CD - analysis ; Antigens, CD - genetics ; Biomarkers, Tumor - analysis ; Biomarkers, Tumor - genetics ; Breast cancer ; Breast Neoplasms - chemistry ; Breast Neoplasms - genetics ; Breast Neoplasms - pathology ; Cadherins - analysis ; Cadherins - genetics ; Carcinoma, Lobular - chemistry ; Carcinoma, Lobular - genetics ; Carcinoma, Lobular - pathology ; CDH1 gene ; Cell adhesion ; Cell adhesion &amp; migration ; Chromosome deletion ; Copy number ; DNA Copy Number Variations ; DNA Mutational Analysis ; E-cadherin ; ErbB-2 protein ; Female ; Gene deletion ; Gene Dosage ; Gene Expression Regulation, Neoplastic ; Genomes ; Grills ; Heterozygosity ; Humans ; Immunohistochemistry ; Invasiveness ; Laboratory Medicine ; Life Sciences &amp; Biomedicine ; Loss of Heterozygosity ; Mammary gland ; Medicine ; Medicine &amp; Public Health ; Middle Aged ; Mutation ; N-Cadherin ; Next-generation sequencing ; Pathology ; RNA-Seq ; Science &amp; Technology ; Tumor cells ; β-Catenin</subject><ispartof>Modern pathology, 2020-12, Vol.33 (12), p.2483-2498</ispartof><rights>2020 The Authors</rights><rights>The Author(s) 2020</rights><rights>The Author(s) 2020. 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Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>true</woscitedreferencessubscribed><woscitedreferencescount>27</woscitedreferencescount><woscitedreferencesoriginalsourcerecordid>wos000542079500005</woscitedreferencesoriginalsourcerecordid><citedby>FETCH-LOGICAL-c522t-ac33cb7d4f6c292152e719d309a3f330547992aa78350149e48eeb1ff74acad23</citedby><cites>FETCH-LOGICAL-c522t-ac33cb7d4f6c292152e719d309a3f330547992aa78350149e48eeb1ff74acad23</cites><orcidid>0000-0002-8903-2345 ; 0000-0002-2668-8056 ; 0000-0003-0732-7762 ; 0000-0001-8495-2321</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.proquest.com/docview/2473251111?pq-origsite=primo$$EHTML$$P50$$Gproquest$$H</linktohtml><link.rule.ids>230,314,780,784,885,27924,27925,64385,64387,64389,72341</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32572153$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Christgen, Matthias</creatorcontrib><creatorcontrib>Bartels, Stephan</creatorcontrib><creatorcontrib>van Luttikhuizen, Jana L.</creatorcontrib><creatorcontrib>Bublitz, Janin</creatorcontrib><creatorcontrib>Rieger, Luisa U.</creatorcontrib><creatorcontrib>Christgen, Henriette</creatorcontrib><creatorcontrib>Stark, Helge</creatorcontrib><creatorcontrib>Sander, Bjoern</creatorcontrib><creatorcontrib>Lehmann, Ulrich</creatorcontrib><creatorcontrib>Steinemann, Doris</creatorcontrib><creatorcontrib>Derksen, Patrick W.B.</creatorcontrib><creatorcontrib>Kreipe, Hans</creatorcontrib><title>E-cadherin to P-cadherin switching in lobular breast cancer with tubular elements</title><title>Modern pathology</title><addtitle>Mod Pathol</addtitle><addtitle>MODERN PATHOL</addtitle><addtitle>Mod Pathol</addtitle><description>Loss of E-cadherin expression due to mutation of the CDH1 gene is a characteristic feature of invasive lobular breast cancer (ILBC). Beta-catenin, which binds to the cytoplasmic domain of E-cadherin, is simultaneously downregulated, reflecting disassembly of adherens junctions (AJs) and loss of cell adhesion. E-cadherin to P-cadherin expression switching can rescue AJs and cell adhesion. However, P-cadherin has not been implicated in ILBC, so far. We aimed to characterize 13 ILBCs with exceptional histomorphology, which we termed ILBCs with tubular elements. The CDH1 mutational status was determined by next generation sequencing and whole-genome copy number (CN) profiling. Expression of cadherins was assessed by immunohistochemistry. ILBCs with tubular elements were ER-positive (13/13) and HER2-negative (13/13) and harbored deleterious CDH1 mutations (11/13) accompanied by loss of heterozygosity due to deletion of chromosome 16q22.1 (9/11). E-cadherin expression was lost or reduced in noncohesive tumor cells and in admixed tubular elements (13/13). Beta-catenin expression was lost in noncohesive tumor cells, but was retained in tubular elements (11/13), indicating focal rescue of AJ formation. N-cadherin and R-cadherin were always negative (0/13). Strikingly, P-cadherin was commonly positive (12/13) and immunoreactivity was accentuated in tubular elements. Adjacent lobular carcinoma in situ (LCIS) was always P-cadherin-negative (0/7). In a reference cohort of LCIS specimens, P-cadherin was constantly not expressed (0/25). In a reference cohort of invasive mammary carcinomas, P-cadherin-positive cases (36/268, 13%) were associated with triple-negative nonlobular breast cancer (P &lt; 0.001). Compared with ILBCs from the reference cohort, P-cadherin expression was more common in ILBCs with tubular elements (12/13 versus 7/84, P &lt; 0.001). In summary, E-cadherin to P-cadherin switching occurs in a subset of ILBCs. 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Medical Complete (Alumni)</collection><collection>Nursing &amp; Allied Health Database (Alumni Edition)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Modern pathology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Christgen, Matthias</au><au>Bartels, Stephan</au><au>van Luttikhuizen, Jana L.</au><au>Bublitz, Janin</au><au>Rieger, Luisa U.</au><au>Christgen, Henriette</au><au>Stark, Helge</au><au>Sander, Bjoern</au><au>Lehmann, Ulrich</au><au>Steinemann, Doris</au><au>Derksen, Patrick W.B.</au><au>Kreipe, Hans</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>E-cadherin to P-cadherin switching in lobular breast cancer with tubular elements</atitle><jtitle>Modern pathology</jtitle><stitle>Mod Pathol</stitle><stitle>MODERN PATHOL</stitle><addtitle>Mod Pathol</addtitle><date>2020-12-01</date><risdate>2020</risdate><volume>33</volume><issue>12</issue><spage>2483</spage><epage>2498</epage><pages>2483-2498</pages><issn>0893-3952</issn><eissn>1530-0285</eissn><abstract>Loss of E-cadherin expression due to mutation of the CDH1 gene is a characteristic feature of invasive lobular breast cancer (ILBC). Beta-catenin, which binds to the cytoplasmic domain of E-cadherin, is simultaneously downregulated, reflecting disassembly of adherens junctions (AJs) and loss of cell adhesion. E-cadherin to P-cadherin expression switching can rescue AJs and cell adhesion. However, P-cadherin has not been implicated in ILBC, so far. We aimed to characterize 13 ILBCs with exceptional histomorphology, which we termed ILBCs with tubular elements. The CDH1 mutational status was determined by next generation sequencing and whole-genome copy number (CN) profiling. Expression of cadherins was assessed by immunohistochemistry. ILBCs with tubular elements were ER-positive (13/13) and HER2-negative (13/13) and harbored deleterious CDH1 mutations (11/13) accompanied by loss of heterozygosity due to deletion of chromosome 16q22.1 (9/11). E-cadherin expression was lost or reduced in noncohesive tumor cells and in admixed tubular elements (13/13). Beta-catenin expression was lost in noncohesive tumor cells, but was retained in tubular elements (11/13), indicating focal rescue of AJ formation. N-cadherin and R-cadherin were always negative (0/13). Strikingly, P-cadherin was commonly positive (12/13) and immunoreactivity was accentuated in tubular elements. Adjacent lobular carcinoma in situ (LCIS) was always P-cadherin-negative (0/7). In a reference cohort of LCIS specimens, P-cadherin was constantly not expressed (0/25). In a reference cohort of invasive mammary carcinomas, P-cadherin-positive cases (36/268, 13%) were associated with triple-negative nonlobular breast cancer (P &lt; 0.001). Compared with ILBCs from the reference cohort, P-cadherin expression was more common in ILBCs with tubular elements (12/13 versus 7/84, P &lt; 0.001). In summary, E-cadherin to P-cadherin switching occurs in a subset of ILBCs. P-cadherin is the molecular determinant of a mixed-appearing histomorphology in ILBCs with tubular elements.</abstract><cop>New York</cop><pub>Elsevier Inc</pub><pmid>32572153</pmid><doi>10.1038/s41379-020-0591-3</doi><tpages>16</tpages><orcidid>https://orcid.org/0000-0002-8903-2345</orcidid><orcidid>https://orcid.org/0000-0002-2668-8056</orcidid><orcidid>https://orcid.org/0000-0003-0732-7762</orcidid><orcidid>https://orcid.org/0000-0001-8495-2321</orcidid><oa>free_for_read</oa></addata></record>
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identifier ISSN: 0893-3952
ispartof Modern pathology, 2020-12, Vol.33 (12), p.2483-2498
issn 0893-3952
1530-0285
language eng
recordid cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_7685979
source MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; ProQuest Central UK/Ireland; Alma/SFX Local Collection
subjects 13/105
14/1
45/22
45/23
631/67/1347
631/80/79
Adherens junctions
Adult
Aged
Antigens, CD - analysis
Antigens, CD - genetics
Biomarkers, Tumor - analysis
Biomarkers, Tumor - genetics
Breast cancer
Breast Neoplasms - chemistry
Breast Neoplasms - genetics
Breast Neoplasms - pathology
Cadherins - analysis
Cadherins - genetics
Carcinoma, Lobular - chemistry
Carcinoma, Lobular - genetics
Carcinoma, Lobular - pathology
CDH1 gene
Cell adhesion
Cell adhesion & migration
Chromosome deletion
Copy number
DNA Copy Number Variations
DNA Mutational Analysis
E-cadherin
ErbB-2 protein
Female
Gene deletion
Gene Dosage
Gene Expression Regulation, Neoplastic
Genomes
Grills
Heterozygosity
Humans
Immunohistochemistry
Invasiveness
Laboratory Medicine
Life Sciences & Biomedicine
Loss of Heterozygosity
Mammary gland
Medicine
Medicine & Public Health
Middle Aged
Mutation
N-Cadherin
Next-generation sequencing
Pathology
RNA-Seq
Science & Technology
Tumor cells
β-Catenin
title E-cadherin to P-cadherin switching in lobular breast cancer with tubular elements
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