science

Sagopilone

Sagopilone is a science 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 Sagopilone rather than just read about it. In short: Sagopilone is a fully synthetic macrolide of the epothilone family with the molecular formula C30H41NO6S. The mechanism of action is similar to taxanes, as they bind to the microtubule and prohibit cell division.

Key takeaways

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

Reference excerpt

Sagopilone is a fully synthetic macrolide of the epothilone family with the molecular formula C30H41NO6S. The mechanism of action is similar to taxanes, as they bind to the microtubule and prohibit cell division. These toxic properties and its possibility to cross the blood-brain barrier makes it a promising cancer medication.

Substance class Sagopilone, also known as ZK-EPO, belongs to the epothilones, which are derived from polyketides.

Structure Sagopilone is a 16-bond macrolide structure, a macrocycle with inner ester structure. With its C30H41NO6S formula and a molecular weight of only 543.7 g/mol, classifying it as a low molecular-weight epothilone. Sagopilone has structural and mechanistic similarities to epothilone, especially epothilone B. The mechanism of action is similar to that of taxanes. It binds to the microtubule of the cell and therefore, prevents cell division. Which makes it acutely toxic. Sagopilone contains 2 hydrogen bond donors and 8 acceptors, 3 rotatable bonds, and 7 stereocenters.

Biological effects and usage Epothilones are a novel class of natural microtubule-stabilizing products. They show potential activity in an expanded spectrum of tumor indications. Microtubules are polymeric structures composed of alpha- and beta-tubulin heterodimers. Sagopilone induces tubulin polymerization and therefore shows antitumor activity. In the cell, sagopilone localizes predominantly to the cytoskeletal compartment. Sagopilone treated cells show mitotic abnormalities which lead to induction of cell cycle arrest at metaphase (in HCT116 cells). Induction of apoptosis follows together with mitochondrial transmembrane potential dissipation (activation of caspase-3 and - 9, mitochondrial cytochrome c release). Sagopilone was tested in phase II clinical trials and has been shown to be clinically active in platinum-resistant and -sensitive ovarian cancer, NSCLC, prostate cancer, glioblastoma and melanoma.

References

Illustrations

Worked examples

Example 1 — a first encounter with Sagopilone

Start with the simplest possible case. Write down what Sagopilone claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Sagopilone 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 Sagopilone 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 Sagopilone

In research: Sagopilone appears in science 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 Sagopilone 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: Sagopilone is common in secondary-school and first-year university syllabi. It links to neighbouring topics Benzothiazoles, Epoxides, Macrolides, so understanding it makes those chapters shorter.
In everyday life: Look for Sagopilone 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 Sagopilone in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sagopilone 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 Sagopilone out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sagopilone in simple terms?

Why does Sagopilone matter?

Because it connects several science 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 Sagopilone?

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 Sagopilone.