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Glossary Cell Junctions

specialized structures connecting adjacent cells within tissues

Cell junctions, also known as intercellular junctions, are specialized structures that connect adjacent cells within tissues. They play crucial roles in maintaining the structural integrity of tissues, facilitating communication between cells, and regulating the passage of substances. Examples include tight junctions, which create a seal to prevent leakage; desmosomes, which provide mechanical strength; and gap junctions, which allow for the direct transfer of ions and small molecules between cells.

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Research

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research The role of cell–cell and cell–matrix junctional complexes in sebaceous gland homeostasis and differentiation

6 citations , September 2024 in “Cell Communication and Signaling”

This study reviews the structural and functional aspects of cell-cell and cell-matrix junctions in sebocytes, emphasizing their roles in sebocyte differentiation and sebum secretion, and how these processes may change in pathological conditions, potentially providing insights for new skin disease therapies.

HPV8 E6 Induced STAT3 Activation Leads to Hair Follicle Junctional Zone Keratinocyte Stem Cell Proliferation and Expansion in Actinic Keratoses

research 277 HPV8 E6 induced STAT3 activation leads to hair follicle junctional zone keratinocyte stem cell proliferation and expansion in actinic keratoses

April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study found that HPV8-induced actinic keratoses may mechanistically involve Lrig1+ hair follicle keratinocyte stem cells, with the E6 gene promoting downstream STAT3 activity in a mouse model.

research Spermidine Promotes Human Hair Growth and Is a Novel Modulator of Human Epithelial Stem Cell Functions

61 citations , July 2011 in “PLOS ONE”

This study provides the first direct evidence that spermidine can stimulate hair growth and modulate human epithelial stem cell biology in cultured human hair follicles.

research 1391 Cell death functions in hair follicle regeneration

April 2023 in “Journal of Investigative Dermatology”

This study found that blocking apoptosis during the catagen phase in mice disrupts hair follicle stem cell niche architecture, delaying subsequent hair regeneration cycles.

research Patched1 Functions as a Gatekeeper by Promoting Cell Cycle Progression

176 citations , February 2006 in “Cancer Research”

This study found that loss of Ptch1 function in mouse skin's basal cells is sufficient to rapidly induce tumors resembling human basal cell carcinoma, suggesting Ptch1 as a key tumor suppressor.

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Community Join

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community Stem cell feat may lead to fix for baldness

17 upvotes 12 years ago

The conversation discusses the complexity of reversing hair loss and the need for a treatment that specifically targets DHT levels without affecting other bodily functions. It mentions finasteride as a current treatment but highlights the desire for a solution that works solely on the scalp.

community Calecim (PTT-6) Advanced Hair System with Topical Exosomes and Growth Factors for Hair Growth

1 year ago

Calecim (PTT-6) Advanced Hair System is a 6-week hair restoration product using stem cell-derived ingredients to stimulate hair growth. Users are skeptical, calling it overpriced and ineffective, suggesting alternatives like LLLT devices or PRP treatments.

community The new growth in hair loss research: With increasing evidence of its impact on mental health, scientists are pushing forward with breakthroughs on balding. Later this year, scientists will launch one of the first ever clinical trials with hair follicles grown entirely from stem cells.

324 upvotes 7 years ago

Hair loss impacts mental health, with treatments like Minoxidil, finasteride, and stem cell transplants discussed. There is hope for future breakthroughs, but current treatments are limited, and awareness is lacking.

community Expectations control for SCUBE3

20 upvotes 2 years ago

SCUBE3, a protein linked to hair growth in moles, was discovered over 25 years ago and is being developed by Amplifica for potential hair loss treatment. Concerns exist about SCUBE3's association with cancer, as it is a protein that promotes cell growth, which could potentially trigger cancer development if used for hair growth therapy.

community The pessimism about the Crisp Cas 9 is excessive

12 upvotes 11 months ago

CRISPR Cas9 could potentially treat baldness by targeting specific genes in hair follicles without affecting other body functions. There is optimism about its future use, despite ethical concerns and the current reliance on treatments like minoxidil and finasteride.

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Learn

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learn Stem Cell Factor

What is stem cell factor and why is it used in hair growth treatments? Stem cell factor promotes hair growth by signaling cell survival and division.
How does stem cell factor help activate dormant hair follicles? Stem cell factor activates dormant hair follicles by signaling through the c-Kit receptor.
Are stem cell factor products safe for long-term scalp use? Stem cell factor products lack proven long-term safety for scalp use.
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learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Ketoconazole

antifungal with some anti-androgenic benefits, often used as a shampoo

learn Epidermal Growth Factor

learn Thymosin Beta 4

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