chemistry

Vintafolide

Vintafolide is a chemistry 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 Vintafolide rather than just read about it. In short: Vintafolide is an investigational targeted cancer therapeutic currently under development by Endocyte and Merck & Co. It is a small molecule drug conjugate consisting of a small molecule targeting the folate receptor, which is overexpressed on certain cancers, such as ovarian cancer, and a potent chemotherapy drug, vinblastine.

Key takeaways

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

Reference excerpt

Vintafolide is an investigational targeted cancer therapeutic currently under development by Endocyte and Merck & Co. It is a small molecule drug conjugate consisting of a small molecule targeting the folate receptor, which is overexpressed on certain cancers, such as ovarian cancer, and a potent chemotherapy drug, vinblastine. Vintafolide is designed to deliver the toxic vinblastine drug selectively to cells expressing the folate receptor using folate targeting. It is being developed with a companion imaging agent, etarfolatide, that identifies patients that express the folate receptor and thus would likely respond to the treatment with vintafolide. A Phase 3 study evaluating vintafolide for the treatment of platinum-resistant ovarian cancer (PROCEED trial) and a Phase 2b study(TARGET trial) in non-small-cell lung carcinoma (NSCLC) are ongoing (in 2012). A Marketing Authorization Application (MAA) filing for vintafolide and etarfolatide for the treatment of patients with folate receptor-positive platinum-resistant ovarian cancer in combination with doxorubicin, pegylated liposomal doxorubicin (PLD), has been accepted by the European Medicines Agency. The drug received orphan drug status in Europe in March 2012. Merck & Co. acquired the development and marketing rights to this experimental cancer drug from Endocyte in April 2012. Endocyte remains responsible for the development and commercialization of etarfolatide, a non-invasive companion imaging agent used to identify patients expressing the folate receptor that will likely respond to treatment with vintafolide. In 2014 Merck and Endocyte stopped a late-stage study (PROCEED) of vintafolide in treating ovarian cancer on the recommendation of a data safety monitoring board, saying that the drug failed to improve progression-free survival.

Mechanism of action Folate is required for cell division, and rapidly dividing cancer cells often express folate receptors in order to capture enough folate to support rapid cell growth. Elevated expression of the folate receptor occurs in many diseases, including other aggressively growing cancers and inflammatory disorders. Vintafolide binds to the folate receptor and is subsequently taken up by the cell through a natural internalization process called endocytosis. Once inside the cell, vintafolide’s linker releases the chemotherapy drug which kills the cell.

References

Illustrations

Worked examples

Example 1 — a first encounter with Vintafolide

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

In research: Vintafolide appears in chemistry 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 Vintafolide 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: Vintafolide is common in secondary-school and first-year university syllabi. It links to neighbouring topics Experimental cancer drugs, Folates, Small-molecule drug conjugates, so understanding it makes those chapters shorter.
In everyday life: Look for Vintafolide 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 Vintafolide in 20 minutes

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

Frequently asked questions

What is Vintafolide in simple terms?

Why does Vintafolide matter?

Because it connects several chemistry 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 Vintafolide?

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 Vintafolide.