HL-60 Cell Line Profile
Quick Facts
| Feature | Information |
|---|---|
| Cell Line | HL-60 |
| Species | Human (Homo sapiens) |
| Tissue of Origin | Peripheral Blood |
| Disease Association | Acute Promyelocytic Leukemia |
| Cell Type | Promyelocyte-like |
| Growth Mode | Suspension |
| Morphology | Round, immature myeloid cells |
| Recommended Medium | RPMI-1640 + 10% FBS |
| Incubation Conditions | 37°C, 5% CO₂, ≥95% humidity |
| Typical Doubling Time | Approximately 30-40 hours |
| Major Applications | Leukemia Research, Neutrophil Biology, Differentiation Studies, Chemotaxis, Innate Immunity |
Overview
HL-60 is one of the most widely used human hematopoietic cell lines. Derived from a patient with acute promyelocytic leukemia, it serves as a classic model for studying myeloid differentiation, neutrophil biology, innate immunity, and leukemia. Its defining feature is its remarkable ability to differentiate into multiple myeloid cell types under controlled laboratory conditions.
Origin and History
- Established from the peripheral blood of a patient with acute promyelocytic leukemia.
- Developed as a model for studying hematopoietic differentiation and leukemia biology.
- One of the most extensively characterized human myeloid cell lines.
Growth Characteristics
| Characteristic | Description |
|---|---|
| Growth Mode | Suspension |
| Morphology | Round, immature myeloid cells |
| Growth Pattern | Single cells or small aggregates |
| Doubling Time | Approximately 30-40 hours |
Culture Notes
HL-60 cells grow in suspension and should be maintained within the recommended cell density range. Excessive cell density can reduce viability and affect differentiation efficiency.
Biological Characteristics
Myeloid Differentiation
HL-60 cells resemble immature promyelocytes and can differentiate into multiple myeloid lineages under appropriate culture conditions.
Common differentiation agents include:
- Dimethyl sulfoxide (DMSO)
- All-trans retinoic acid (ATRA)
Following differentiation, cells exhibit:
- Reduced proliferation
- Segmented nuclei
- Increased expression of neutrophil-associated markers
- Enhanced antimicrobial functions
Chemotaxis
Differentiated HL-60 cells display directed migration toward chemoattractants, making them a valuable model for studying:
- Neutrophil migration
- Inflammatory responses
- Host defense mechanisms
Respiratory Burst
HL-60 cells are widely used to investigate the production of reactive oxygen species (ROS) during immune activation, an essential antimicrobial mechanism of neutrophils.
Innate Immunity
Differentiated HL-60 cells exhibit several neutrophil-like functions, including:
- Phagocytosis
- Reactive oxygen species production
- Antimicrobial responses
These properties make HL-60 one of the most widely used alternatives to primary human neutrophils.
Culture Conditions
Recommended Medium
- RPMI-1640
- 10% Fetal Bovine Serum (FBS)
Incubation Conditions
| Parameter | Value |
|---|---|
| Temperature | 37°C |
| CO₂ | 5% |
| Relative Humidity | ≥95% |
Passaging
Maintain cultures within the recommended cell density by dilution into fresh medium. Healthy, logarithmically growing cultures provide the most consistent differentiation results.
Major Applications
HL-60 cells are widely used for:
- Leukemia research
- Myeloid differentiation studies
- Neutrophil biology
- Chemotaxis assays
- Innate immunity research
- Host-pathogen interaction studies
- Drug discovery
- Differentiation therapy research
Advantages
- Human-derived hematopoietic model
- Excellent model for myeloid differentiation
- Easily differentiated into neutrophil-like cells
- Easy suspension culture
- Extensive experimental literature
Limitations
- Derived from leukemia rather than normal hematopoietic cells
- Differentiated cells do not completely reproduce primary neutrophil biology
- Differentiation efficiency depends on culture conditions
- Lacks the complexity of the bone marrow microenvironment
Authentication and Quality Control
Cell Line Authentication
Routine authentication using Short Tandem Repeat (STR) profiling together with verification of differentiation markers is recommended.
Contamination Monitoring
Regular screening should include:
- Mycoplasma contamination
- Bacterial contamination
- Fungal contamination
Routine quality control is essential for reliable and reproducible experimental results.
Cryopreservation
HL-60 cells generally recover well following standard cryopreservation and thawing procedures. Maintaining authenticated low-passage frozen stocks is recommended for long-term studies.
References
- Freshney RI. Culture of Animal Cells: A Manual of Basic Technique and Specialized Applications.
- ATCC Cell Line Database.
- Cellosaurus Cell Line Knowledgebase.
- ECACC Cell Line Collection.