biology

Renal stem cell

Renal stem cell 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 Renal stem cell rather than just read about it. In short: Renal stem cells are self-renewing, multipotent stem cells which are able to give rise to all the cell types of the kidney. It is involved in the homeostasis and repair of the kidney, and holds therapeutic potential for treatment of kidney failure.

Key takeaways

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

Reference excerpt

Renal stem cells are self-renewing, multipotent stem cells which are able to give rise to all the cell types of the kidney. It is involved in the homeostasis and repair of the kidney, and holds therapeutic potential for treatment of kidney failure.

Structure Strong evidence suggests that renal stem cells are located in the renal papilla. Using stain-retaining assay (with bromodeoxyuridine, or BrdU), a low-cycling cell population was found in the papillary region, which was able to divide rapidly to repair the damage caused by transcient renal ischemia. These cells are able to incorporate into other renal tissues, and was able to repeatedly form spheres in 3D cultures, and clonal analysis also exhibited its multipotency. Other reports have suggested the renal tubule and renal capsule to be the site of stem cells. The renal capsule contain stain-retaining cells which exhibited markers for mesenchymal stem cells; after their removal, recovery was significantly slower post-ischemic injury. These evidence suggests a stem cell population exists within the renal capsule.

Development Using in vivo lineage tracing techniques, Lgr5+ cells were found to contribute to the nephron, specifically to the ascending limb of the loop of Henle and the distal convoluted tubule. Thus, Lgr5+ cells can potentially be a marker for renal stem and/or progenitor cells.

Clinical significance There is much debate regarding the cells involved in repair after injury; while some suggests that stem cells are the sole driving force of repair, others suggests that cells dedifferentiate after damage to act like stem cells. Alternately, it was also reported that differentiated tubular epithelial cells are the driving mechanism for regeneration after injury, using proliferative expansion as the mechanism. Multipotent mouse kidney progenitor cells (MKPC) were obtained from Myh9 targeted mutant mice. Injection of MKPC into mice post-ischemic injury saw the MKPC regenerating different cell lineages and was able to regenerate renal function and enhanced survival.

Renal induced pluripotent stem cells It has been reported that endogenous kidney tubular renal epithelial cells can be dedifferentiated into induced pluripotent stem cells by the treatment of only two factors - Oct4 and Sox2.

See also List of human cell types derived from the germ layers

References

Worked examples

Example 1 — a first encounter with Renal stem cell

Start with the simplest possible case. Write down what Renal stem cell 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 Renal stem cell 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 Renal stem cell 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 Renal stem cell

In research: Renal stem cell 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 Renal stem cell 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: Renal stem cell is common in secondary-school and first-year university syllabi. It links to neighbouring topics Stem cells, so understanding it makes those chapters shorter.
In everyday life: Look for Renal stem cell 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 Renal stem cell in 20 minutes

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

Frequently asked questions

What is Renal stem cell in simple terms?

Why does Renal stem cell 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 Renal stem cell?

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 Renal stem cell.