{"id":2933,"date":"2026-08-22T15:52:28","date_gmt":"2026-08-22T14:52:28","guid":{"rendered":"https:\/\/seamlessbio.de\/?page_id=2933"},"modified":"2026-08-23T00:50:25","modified_gmt":"2026-08-22T23:50:25","slug":"what-is-xeno-free-cell-culture","status":"publish","type":"page","link":"https:\/\/seamlessbio.de\/de\/what-is-xeno-free-cell-culture\/","title":{"rendered":"What is Xeno-Free Cell Culture?"},"content":{"rendered":"
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Quick Definition<\/p>\n

What is Xeno-Free Cell Culture?:<\/strong> Xeno-free cell culture means that no components derived from a species other than the species being cultured are present in the medium. For human cell culture, this means no bovine, porcine, murine or other non-human animal components \u2014 but human-derived materials (human platelet lysate, human serum albumin, recombinant human proteins) are acceptable.<\/p>\n<\/div>\n\n

Xeno-free vs serum-free vs animal component-free<\/h2>\n

These three terms are frequently confused. Serum-free simply means no whole serum \u2014 but the medium may still contain bovine albumin or transferrin. Xeno-free means no foreign-species components \u2014 human albumin (rHSA) and human platelet lysate (hPL) are xeno-free for human cells. Animal component-free (ACF) means no components from any animal source including human \u2014 only recombinant proteins from microbial or plant expression systems qualify.<\/p>\n\n

When is xeno-free required?<\/h2>\n

Xeno-free conditions are required or strongly recommended for: ATMP manufacturing (MSC, CAR-T, NK, iPSC-derived cells for clinical use), any cell therapy product where bovine protein contamination would pose immunogenic risk to patients, and regulatory submissions where EMA Advanced Therapy Medicinal Products guidelines apply. For non-clinical research, xeno-free is optional but increasingly preferred for translational relevance.<\/p>\n\n

Practical xeno-free medium components<\/h2>\n

Replace FBS with: hPL (5%) or human AB serum (5\u201310%) as serum equivalent + rHSA (1\u20132 g\/L) as albumin carrier + recombinant human transferrin (OsrhTF, 5\u201310 \u00b5g\/mL) for iron delivery + recombinant human insulin (10 \u00b5g\/mL) + cell-type specific recombinant growth factors (rEGF, rFGF-2, rIGF-1).<\/p>\n\n

Key Facts<\/h2>\n