biology

Vascular endothelial growth inhibitor

Vascular endothelial growth inhibitor 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 Vascular endothelial growth inhibitor rather than just read about it. In short: Vascular endothelial growth inhibitor (VEGI), also known as TNF-like ligand 1A (TL1A) and TNF superfamily member 15 (TNFSF15), is protein that in humans is encoded by the TNFSF15 gene. VEGI is an anti-angiogenic protein.

Key takeaways

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

Reference excerpt

Vascular endothelial growth inhibitor (VEGI), also known as TNF-like ligand 1A (TL1A) and TNF superfamily member 15 (TNFSF15), is protein that in humans is encoded by the TNFSF15 gene. VEGI is an anti-angiogenic protein. It belongs to tumor necrosis factor (ligand) superfamily, where it is member 15. It is the sole known ligand for death receptor 3, and it can also be recognized by decoy receptor 3.

Function The protein encoded by this gene is a cytokine that belongs to the tumor necrosis factor (TNF) ligand family. This protein is abundantly expressed in endothelial cells, but is not expressed in either B or T cells. The expression of this protein is inducible by TNF-alpha and IL-1 alpha. This cytokine is a ligand for receptor TNFRSF25 (death receptor 3) and TNFRSF6B (decoy receptor 3). It can activate both the NF-κB and MAPK signalling pathways, and acts as an autocrine factor to induce apoptosis in endothelial cells. This cytokine is also found to inhibit endothelial cell proliferation, and thus may function as an angiogenesis inhibitor. An additional isoform encoded by an alternatively spliced transcript variant has been reported but the sequence of this transcript has not been determined.

Clinical relevance Several TNFSF15 SNPs have been found to be strongly associated with inflammatory bowel disease. There is several clinical trials which investigate if neutralizing TL1A can be benefitial in IBD or other autoimmune diseases (Afimkibart, Tulisokibart, Duvakitug).

References

Illustrations

Worked examples

Example 1 — a first encounter with Vascular endothelial growth inhibitor

Start with the simplest possible case. Write down what Vascular endothelial growth inhibitor 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 Vascular endothelial growth inhibitor 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 Vascular endothelial growth inhibitor 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 Vascular endothelial growth inhibitor

In research: Vascular endothelial growth inhibitor 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 Vascular endothelial growth inhibitor 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: Vascular endothelial growth inhibitor is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cytokines, Genes on human chromosome 9, Human chromosome 9 gene stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Vascular endothelial growth inhibitor 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 Vascular endothelial growth inhibitor in 20 minutes

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

Frequently asked questions

What is Vascular endothelial growth inhibitor in simple terms?

Why does Vascular endothelial growth inhibitor 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 Vascular endothelial growth inhibitor?

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 Vascular endothelial growth inhibitor.