biology

THP-1 cell line

THP-1 cell line is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand THP-1 cell line rather than just read about it. In short: THP-1 is a human monocytic cell line derived from an acute monocytic leukemia patient. It is used to test leukemia cell lines in immunocytochemical analysis of protein-protein interactions, and immunohistochemistry.

Key takeaways

THP-1 cell line belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect THP-1 cell line to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of THP-1 cell line from memory before moving on to harder problems.

Reference excerpt

THP-1 is a human monocytic cell line derived from an acute monocytic leukemia patient. It is used to test leukemia cell lines in immunocytochemical analysis of protein-protein interactions, and immunohistochemistry.

Characteristics Although THP-1 cells are of the same lineage, mutations can cause differences as the progeny proliferates. In general, THP-1 cells exhibit a large, round, single-cell morphology. The cells were derived from the peripheral blood of a 1-year-old human male with acute monocytic leukemia. Some of their characteristics are:

Expression of Fc receptor and C3b receptors while lacking surface and cytoplasmic immunoglobulins. Production of IL-1. Positive detection of alpha-naphthyl butyrate esterase and lysozymes Phagocytic physiology (both for latex beads and sensitized erythrocytes). Restoration of the response of purified T lymphocytes to Con A. Increased CO2 production on phagocytosis and differentiation into macrophage-like cells Polarization into the M1 phenotype by incubation with IFN-γ and LPS, or to the M2 phenotype by incubation with interleukin 4 and interleukin 13 Differentiation into immature dendritic cells, using recombinant human interleukin 4 (rhIL-4) and recombinant human granulocyte macrophage colony-stimulating factor (rhGM-CSF), and mature dendritic cells using rhIL-4, rhGM-CSF, recombinant human tumour necrotic factor α (rhTNF-α) and Ionomycin. The HLA type for THP-1 is HLA-A*02:01; A*24:02; B*15:11; B*35:01; C*03:03; DRB1*01:01; DRB1*15:01; DQB1*05:01; DQB1*06:02; DPB1*02:01; DPB1*04:02 (in the German Collection of Microorganisms and Cell Cultures (DSMZ) cell bank). This HLA type can change depending on the reference biorepository, due to loss of heterozygosity in multiple chromosomal regions, as THP-1 from the American Type Culture Collection (ATCC) do not express the HLA-A*24:02 and B*35:01 alleles.

Growth Information THP-1 can provide continuous culture when grown in suspension; RPMI 1640 + 10% FBS + 2mM L-Glutamine. The average doubling time is 19 to 50 hours. 1 mM sodium pyruvate, penicillin (100 units/ml) and streptomycin (100 μg/ml) are also commonly added to inhibit bacterial contamination. Cultures should be maintained at cell densities in the range 2-9 × 105 cells/ml at 37 °C, 5% CO2. Cells are non-adherent.

Hazards THP-1 cells are of human origin, and no evidence has been found for the presence of infectious viruses or toxic products. The ATCC Biosafety recommendation is level 1.

Research applications THP-1 cells are used as a models to study the monocyte-macrophage differentiation process, antigen presentation and as a model to examine some macrophage-related physiological processes, for example the macrophage cholesterol efflux.

References

External links Cellosaurus entry for THP-1

Worked examples

Example 1 — a first encounter with THP-1 cell line

Start with the simplest possible case. Write down what THP-1 cell line claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to THP-1 cell line before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about THP-1 cell line ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of THP-1 cell line

In research: THP-1 cell line appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses THP-1 cell line in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: THP-1 cell line is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cancer cell lines, Hematology, Human cell lines, so understanding it makes those chapters shorter.
In everyday life: Look for THP-1 cell line outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study THP-1 cell line in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what THP-1 cell line means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain THP-1 cell line out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is THP-1 cell line in simple terms?

Why does THP-1 cell line matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study THP-1 cell line?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on THP-1 cell line.