{"id":3335,"date":"2026-08-28T08:12:42","date_gmt":"2026-08-28T07:12:42","guid":{"rendered":"https:\/\/wheat-quail-856400.hostingersite.com\/?page_id=3335"},"modified":"2026-08-28T08:14:55","modified_gmt":"2026-08-28T07:14:55","slug":"what-is-human-tissue-biomarker","status":"publish","type":"page","link":"https:\/\/seamlessbio.de\/de\/what-is-human-tissue-biomarker\/","title":{"rendered":"Was versteht man unter menschlichem Gewebe f\u00fcr die Biomarkerforschung?"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"3335\" class=\"elementor elementor-3335\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b41d2d4 e-con e-atomic-element e-flexbox-base e-default-div e-3170797\" data-id=\"b41d2d4\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"b41d2d4\">\n    \t\t<div class=\"elementor-element elementor-element-924231a elementor-widget elementor-widget-html\" data-id=\"924231a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- \nWORDPRESS PAGE \u2014 GUTENBERG \"BENUTZERDEFINIERTES HTML\" BLOCK\nSlug: what-is-human-tissue-biomarker\nSEO Title: What is Human Tissue for Biomarker Research? \u2014 IVD Definition | SeamlessBio\nMeta Description: What is human tissue in biomarker research and IVD development, what types are available (fresh frozen, FFPE), and when is tissue preferred over serum? Definition from SeamlessBio.\nFocus Keyword: what is human tissue biomarker research IVD\nAdditional Keywords: human frozen tissue IVD development, FFPE tumour tissue biomarker, CSF cerebrospinal fluid IVD assay, human tissue biomarker discovery\nMenu: Resources \u2192 Glossary\n-->\n\n<div style=\"background:#e9fbfa;border-left:4px solid #18b7b2;border-radius:0 8px 8px 0;padding:20px 24px;margin-bottom:32px;\">\n<p style=\"font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:#139b97;margin-bottom:8px;\">Kurzdefinition<\/p>\n<p style=\"font-size:16px;margin:0;\"><strong>Was ist humanes Gewebe f\u00fcr die Biomarkerforschung?<\/strong> Humanes Gewebe f\u00fcr die Biomarkerforschung bezeichnet Biopsie- oder Operationspr\u00e4parate menschlicher Spender, die unter definierten Bedingungen gewonnen, verarbeitet und gelagert werden \u2013 f\u00fcr Biomarker-Discovery, Assayentwicklung, IHC\/ISH-Validierung und die Entwicklung von Companion Diagnostics. Die beiden Hauptformate sind Fresh-Frozen-Gewebe (schockgefroren bei \u221280 \u00b0C f\u00fcr die Protein- und Nukleins\u00e4ureextraktion) und FFPE-Gewebe (formalinfixiert, paraffineingebettet) f\u00fcr histologische und immunhistochemische Analysen.<\/p>\n<\/div>\n\n<h2>Fresh Frozen vs. FFPE \u2013 wann was?<\/h2>\n<table>\n  <tr><th>Parameter<\/th><th>Fresh Frozen<\/th><th>FFPE<\/th><\/tr>\n  <tr><td>Proteinintegrit\u00e4t<\/td><td>\u2705 Hervorragend \u2013 native Konformation erhalten<\/td><td>\u26a0\ufe0f Quervernetzt \u2013 f\u00fcr IHC Antigendemaskierung n\u00f6tig<\/td><\/tr>\n  <tr><td>RNA-Qualit\u00e4t<\/td><td>\u2705 Hoher RIN \u2013 geeignet f\u00fcr RNA-Seq, qPCR<\/td><td>\u26a0\ufe0f Degradiert \u2013 kurze Amplikons und FFPE-spezifische Kits n\u00f6tig<\/td><\/tr>\n  <tr><td>Morphologie<\/td><td>\u26a0\ufe0f Gefrierartefakte \u2013 nicht geeignet f\u00fcr Standardhistologie<\/td><td>\u2705 Hervorragend \u2013 Standard-HE, IHC, ISH<\/td><\/tr>\n  <tr><td>Lagerung<\/td><td>\u221280 \u00b0C \u2013 langfristig aufwendig<\/td><td>Raumtemperatur \u2013 unbegrenzt stabil<\/td><\/tr>\n  <tr><td>IHC\/ISH<\/td><td>\u26a0\ufe0f M\u00f6glich, aber suboptimal \u2013 Kryoschnitte<\/td><td>\u2705 Standardformat \u2013 4-\u00b5m-Schnitte auf APES-beschichteten Objekttr\u00e4gern<\/td><\/tr>\n  <tr><td>Proteomik<\/td><td>\u2705 Vollst\u00e4ndige Proteinextraktion<\/td><td>\u26a0\ufe0f Quervernetzung senkt die Ausbeute \u2013 spezielle Extraktion n\u00f6tig<\/td><\/tr>\n  <tr><td>Entwicklung von Companion Diagnostics<\/td><td>\u26a0\ufe0f Kein klinisches Standardformat<\/td><td>\u2705 Standard \u2013 CDx-Assays werden an FFPE validiert<\/td><\/tr>\n  <tr><td>Biomarker-Discovery<\/td><td>\u2705 Bevorzugt in der Discovery-Phase<\/td><td>\u2705 Validierungsphase \u2013 retrospektive Archive<\/td><\/tr>\n<\/table>\n\n<h2>Liquor \u2013 Zerebrospinalfl\u00fcssigkeit als spezielle Biomarkermatrix<\/h2>\n<p>Liquor (Zerebrospinalfl\u00fcssigkeit, CSF) wird vom Plexus choroideus gebildet und umsp\u00fclt Gehirn und R\u00fcckenmark. Er spiegelt den biochemischen Zustand des zentralen Nervensystems direkter wider als Blut \u2013 und ist damit die wichtigste Matrix f\u00fcr ZNS-Biomarkerassays. Liquor wird unter sterilen Bedingungen per Lumbalpunktion gewonnen \u2013 ein invasiverer Eingriff als die Blutentnahme, der das verf\u00fcgbare Volumen begrenzt und eine fachkundige Entnahme erfordert.<\/p>\n<p>Wichtige Liquor-Biomarker in der aktuellen IVD-Anwendung: Gesamt-Tau und Phospho-Tau 181 (neuronale Sch\u00e4digung und Fibrillenbildung bei Alzheimer), Amyloid-\u03b242 und das Amyloid-\u03b242\/40-Verh\u00e4ltnis (Amyloid-Plaque-Last), Neurofilament-Leichtkette NfL (axonale Sch\u00e4digung \u2013 erh\u00f6ht bei ALS, MS, Parkinson, Sch\u00e4del-Hirn-Trauma) und GFAP (Astrozytensch\u00e4digung). Diese Analyten liegen im Liquor in Konzentrationen von pg\/ml bis ng\/ml vor und erfordern hochsensitive Immunoassay-Plattformen.<\/p>\n\n<h2>IgG-abgereichertes und steroid-abgereichertes Serum \u2013 wann n\u00f6tig?<\/h2>\n<p><strong>IgG-abgereichertes Serum<\/strong> ist Humanserum, aus dem die Immunglobuline per Protein-A\/G-Affinit\u00e4tsdepletion entfernt wurden. Normales Humanserum enth\u00e4lt 8\u201312 mg\/ml IgG \u2013 in dieser Konzentration dominiert IgG den Proteinhintergrund und kann Sandwich-Immunoassays f\u00fcr niedrig konzentrierte Biomarker st\u00f6ren, weil es unspezifische Bindungsstellen besetzt. IgG-abgereichertes Serum liefert Albumin, Transferrin und die \u00fcbrigen Matrixproteine von Humanserum ohne IgG-Hintergrund \u2013 n\u00fctzlich als Kalibratorverd\u00fcnner f\u00fcr Assays, bei denen endogenes IgG sonst die Kalibrierkurve verf\u00e4lschen w\u00fcrde.<\/p>\n<p><strong>Steroid-abgereichertes Serum<\/strong> ist Humanserum, aus dem Steroidhormone (\u00d6stradiol, Testosteron, Progesteron, Cortisol, DHEA) durch Aktivkohle-Dextran-Adsorption entfernt wurden. Es dient als Matrix f\u00fcr den Nullkalibrator von Steroidhormon-Immunoassays \u2013 damit der Leerkalibrator kein endogenes Hormon enth\u00e4lt, das eine Basislinie \u00fcber null erzeugen w\u00fcrde.<\/p>\n\n<h2>HAMA-Interferenz \u2013 warum sie f\u00fcr die gewebebasierte Forschung wichtig ist<\/h2>\n<p>Humane Anti-Maus-Antik\u00f6rper (HAMA) sind Antik\u00f6rper im Humanserum, die murines IgG erkennen. HAMA bilden Patienten, die mit Mausantik\u00f6rpern in Kontakt gekommen sind \u2013 durch diagnostische Bildgebung (radioaktiv markierte murine Antik\u00f6rper), Krebstherapie (murine mAk) oder Laborunf\u00e4lle. HAMA st\u00f6ren Sandwich-Immunoassays mit murinen F\u00e4nger- und Detektionsantik\u00f6rpern \u2013 sie verbr\u00fccken die beiden Antik\u00f6rper und erzeugen ein falsch-positives Signal. HAMA-positives Serum ist ein vorgeschriebenes Interferenzmaterial f\u00fcr die Leistungsbewertung jedes IVD, das murine Antik\u00f6rper im Sandwich-Format verwendet. SeamlessBio liefert HAMA-positives und HAMA-hochpositives Serum f\u00fcr Interferenzpr\u00fcfungen.<\/p>\n\n<h2>Wichtige Fakten<\/h2>\n<ul>\n<li>Fresh-Frozen-Gewebe: unmittelbar nach der Entnahme in fl\u00fcssigem Stickstoff oder bei \u221280 \u00b0C schockgefroren \u2013 erh\u00e4lt Proteinaktivit\u00e4t, RNA-Integrit\u00e4t (bevorzugt RIN &gt;7) und Enzymfunktion f\u00fcr Proteomik, Transkriptomik und funktionelle Assays<\/li>\n<li>FFPE-Gewebe: 12\u201324 Stunden in 10 % neutral gepuffertem Formalin fixiert, dann in Paraffin eingebettet \u2013 erh\u00e4lt die Morphologie f\u00fcr IHC\/ISH, verursacht aber Proteinquervernetzung und RNA-Abbau (f\u00fcr PCR k\u00fcrzere Amplikons n\u00f6tig)<\/li>\n<li>Liquor (CSF) ist eine Fl\u00fcssigbiopsie des zentralen Nervensystems \u2013 die wichtigste Matrix f\u00fcr neurologische Biomarkerassays (Tau, Phospho-Tau, Amyloid-\u03b242, NfL, GFAP) in der Alzheimer- und Parkinson-Diagnostik<\/li>\n<li>Humanes Gewebe ist f\u00fcr die Entwicklung von Companion Diagnostics (CDx) unverzichtbar \u2013 IHC\/ISH-Assays, die \u00fcber die Eignung von Patienten f\u00fcr zielgerichtete Therapien entscheiden, erfordern validierte Gewebepanels mit best\u00e4tigtem Biomarker-Expressionsstatus<\/li>\n<li>Gewebebiobanken m\u00fcssen mit Ethikvotum und vollst\u00e4ndiger informierter Einwilligung der Spender arbeiten \u2013 ohne ethische Freigabe gewonnenes Gewebe kann nicht in regulatorischen IVD-Einreichungen verwendet werden<\/li>\n<li>Die kalte Isch\u00e4miezeit (Zeit von der Unterbrechung der Blutversorgung bis zur Konservierung) ist der kritische Qualit\u00e4tsparameter f\u00fcr Fresh-Frozen-Gewebe \u2013 bevorzugt &lt;30 Minuten f\u00fcr die Proteinintegrit\u00e4t, &lt;60 Minuten f\u00fcr RNA<\/li>\n<li>SeamlessBio liefert gefrorenes humanes Schilddr\u00fcsengewebe (1\u2013100 g), FFPE-Tumorgewebe, Fresh-Frozen-Leber- und -Pankreasgewebe sowie Liquor (25 ml oder 250 ml) \u2013 inklusive vollst\u00e4ndiger ethischer Freigabe und Chain of Custody<\/li>\n<\/ul>\n\n<h2>Weiterlesen<\/h2>\n<ul>\n<li><a href=\"https:\/\/seamlessbio.de\/de\/humane-gewebe-spezialmaterialien\/\">Humane Gewebe &amp; spezielle Biomaterialien<\/a><\/li>\n<li><a href=\"https:\/\/seamlessbio.de\/de\/disease-state-serum-patientenseren\/\">Disease-State-Serumpanels<\/a><\/li>\n<li><a href=\"https:\/\/seamlessbio.de\/de\/what-is-disease-state-serum\/\">Was ist \u201eDisease State Serum\u201c?<\/a><\/li>\n<li><a href=\"https:\/\/seamlessbio.de\/de\/ivd-qualitaetskontrollen\/\">Humane IVD-Qualit\u00e4tskontrollen<\/a><\/li>\n<li><a href=\"https:\/\/seamlessbio.de\/de\/humane-biomaterialien-ivd\/\">Humane Biomaterialien &amp; IVD \u2013 \u00dcberblick<\/a><\/li>\n<\/ul>\n\n<div style=\"background:#f4f6f7;border-radius:12px;padding:32px;text-align:center;margin-top:40px;\">\n<p style=\"font-size:18px;font-weight:700;color:#1a2e35;margin-bottom:12px;\">Humane Gewebe &amp; spezielle Biomaterialien \u2013 erh\u00e4ltlich bei SeamlessBio<\/p>\n<p style=\"color:#6b7f82;margin-bottom:20px;\">Angebot innerhalb von 48 Stunden. Nach ISO 13485 zertifizierte Bezugsquelle.<\/p>\n<a href=\"https:\/\/seamlessbio.de\/de\/humane-gewebe-spezialmaterialien\/\" style=\"background:#18b7b2;color:#fff;padding:12px 28px;border-radius:50px;font-size:13px;font-weight:700;text-decoration:none;\">Zum Produkt \u2192<\/a>\n&nbsp;&nbsp;\n<a href=\"https:\/\/seamlessbio.de\/de\/kontakt\/\" style=\"border:2px solid #18b7b2;color:#139b97;padding:10px 28px;border-radius:50px;font-size:13px;font-weight:700;text-decoration:none;\">Angebot anfordern<\/a>\n<\/div>\n\n<p style=\"font-size:13px;color:#6b7f82;margin-top:32px;border-top:1px solid #d8e8e7;padding-top:16px;\">\n<em>SeamlessBio GmbH \u00b7 Passau, Deutschland \u00b7 <a href=\"mailto:info@seamlessbio.de\">info@seamlessbio.de<\/a> \u00b7 +49 851 37932226<\/em>\n<\/p>\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Quick Definition What is Human Tissue for Biomarker Research?: Human tissue for biomarker research refers to biopsy or surgical specimens from human donors \u2014 collected, processed and stored under defined conditions for use in biomarker discovery, assay development, IHC\/ISH validation, and companion diagnostic development. The two primary formats are fresh frozen tissue (snap-frozen at \u221280\u00b0C [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","footnotes":""},"class_list":["post-3335","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is Human Tissue for Biomarker Research? \u2014 IVD Definition<\/title>\n<meta name=\"description\" content=\"What is human tissue in biomarker research and IVD development, what types are available (fresh frozen, FFPE), and when is tissue preferred over serum? 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