biology

Glypican 2

Glypican 2 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 Glypican 2 rather than just read about it. In short: Glypican 2 (GPC2), also known cerebroglycan, is a protein which in humans is encoded by the GPC2 gene. The GPC2 gene is at locus 7q22.1 and encodes for a 579 amino acid protein.

Key takeaways

Glypican 2 belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Glypican 2 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Glypican 2 from memory before moving on to harder problems.

Reference excerpt

Glypican 2 (GPC2), also known cerebroglycan, is a protein which in humans is encoded by the GPC2 gene. The GPC2 gene is at locus 7q22.1 and encodes for a 579 amino acid protein. The C-terminus of GPC2 has the GPI attachment site, at G554, and the N-terminus encodes a signal peptide, from M1 to S24. Multiple GPC2 mRNA transcripts have been identified. GPC2-201 is the isoform overexpressed in pediatric cancers. Tumor-associated exon 3 of GPC2 shows the lowest expression in normal tissues compared with other exons.

Function Cerebroglycan is a glycophosphatidylinositol-linked integral membrane heparan sulfate proteoglycan found in the developing nervous system. Cerebroglycan participates in cell adhesion and is thought to regulate the growth and guidance of axons. Cerebroglycan has especially high affinity for laminin-1.

Implications in cancer GPC2 has been identified as a therapeutic target in neuroblastoma in two independent studies published by Mitchell Ho's lab at the NCI and John Maris's lab at the University of Pennsylvania in 2017. GPC2 is highly expressed in about half of neuroblastoma cases and that high GPC2 expression correlates with poor overall survival. GPC2 silencing inactivates Wnt/β-catenin signaling and reduces the expression of N-Myc, an oncogenic driver of neuroblastoma tumorigenesis. Chimeric antigen receptor (CAR) T cells and Immunotoxins (antibody-cytotoxin fusion proteins) targeting GPC2 inhibit neuroblastoma growth in mouse models. The Ho lab at the National Cancer Institute generated a mouse monoclonal antibody called CT3 targeting human GPC2. The CT3 antibody has been shown to recognize a tumor-associated isoform (isoform 201) of GPC2 with high affinity. Immunohistochemistry using CT3 shows that the antibody has high binding signals on neuroblastoma, medulloblastoma, and retinoblastoma. CT3 does not bind human normal tissues except the testis. CT3-derived CAR T cells regress neuroblastoma in mice. The CT3 mAb is commercially available for Western blot, flow cytometry, immunohistochemistry, and immunofluorescence. A GPC2 specific antibody-drug conjugate (ADC) can inhibit neuroblastoma and small-cell lung cancer cell proliferation and tumor growth in mice.

Illustrations

Worked examples

Example 1 — a first encounter with Glypican 2

Start with the simplest possible case. Write down what Glypican 2 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 Glypican 2 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 Glypican 2 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 Glypican 2

In research: Glypican 2 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 Glypican 2 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: Glypican 2 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 7, Protein stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Glypican 2 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 Glypican 2 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Glypican 2 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 Glypican 2 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Glypican 2 in simple terms?

Glypican 2 (GPC2), also known cerebroglycan, is a protein which in humans is encoded by the GPC2 gene. The GPC2 gene is at locus 7q22.1 and encodes for a 579 amino acid protein.

Why does Glypican 2 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 Glypican 2?

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 Glypican 2.