Home › Cell Biology › Isolation of Human Monocytes by Double Gradient Centrifugation and Their Differentiation to Macrophages in Teflon-coated Cell Culture Bags
Cell Biology JoVE (Open Access) Citable · DOI

Isolation of Human Monocytes by Double Gradient Centrifugation and Their Differentiation to Macrophages in Teflon-coated Cell Culture Bags

DOI: 10.3791/51554-v
What you'll learn
  • ✓ Isolate human monocytes from buffy coats using double density gradient centrifugation
  • ✓ Differentiate isolated monocytes to macrophages in Teflon-coated culture bags
  • ✓ Harvest and characterize macrophage yields for downstream experiments
Protocol

Biopharma Insights We present a simple and efficient protocol for the generation of human macrophages. Buffy coats are processed by double density gradient centrifugation and isolated monocytes are then differentiated to macrophages in Teflon-coated cell culture bags. This maximizes macrophage yields and facilitates cell harvesting for subsequent experiments.

Difficulty
intermediate
Total time
~7–10 days (monocyte isolation ~4–6 hours; macrophage differentiation ~5–7 days; harvest ~1–2 hours)
Model organism
Human monocytes/macrophages (primary cell culture from buffy coats)
Biosafety
BSL-2

Steps

1
Isolate monocytes by double gradient centrifugation

Process buffy coats through double density gradient centrifugation to purify monocytes from whole blood cell preparations. This maximizes monocyte yield and purity for downstream differentiation.

▶ 01:27
2
Differentiate monocytes to macrophages in culture bags

Culture isolated monocytes in Teflon-coated cell culture bags with appropriate differentiation factors to promote conversion to mature macrophages over several days.

▶ 04:29
3
Harvest differentiated macrophages from culture bags

Recover mature macrophages from Teflon-coated bags using gentle harvesting techniques that preserve cell viability and phenotype for subsequent experiments.

▶ 05:39
4
Characterize macrophage yields and phenotype

Assess macrophage differentiation efficiency, cell counts, and surface marker expression to confirm successful generation and quality of final macrophage preparations.

▶ 07:09
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