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Glossary Epidermal Differentiation

process where skin cells mature to form protective barrier

Epidermal differentiation is the process by which cells in the outermost layer of the skin, called the epidermis, mature and change to form a protective barrier. This involves the transformation of basal cells into specialized cells like keratinocytes, which produce keratin, a protein that helps protect the skin from environmental damage. This process is crucial for maintaining skin integrity and function.

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Research

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research Autophagy-Mediated Cellular Remodeling during Terminal Differentiation of Keratinocytes in the Epidermis and Skin Appendages

7 citations , October 2024 in “Cells”

The researchers reported that autophagy, a lysosome-dependent degradation mechanism, plays a significant role in the cellular remodeling of keratinocyte differentiation in the skin, affecting the properties of the differentiation products by altering cellular components during this process.

research Chapter 3 Expression and Modification of Keratins During Terminal Differentiation of Mammalian Epidermis

81 citations , January 1987 in “Current topics in developmental biology/Current Topics in Developmental Biology”

Keratins change and are modified differently in skin layers and body parts.

research 591 Chromatin architectural protein CTCF regulates terminal keratinocyte differentiation in the developing epidermis and hair follicles

April 2021 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study found that CTCF is crucial for proper skin and hair follicle development in mice, affecting keratinocyte differentiation and gene expression in keratin loci.

research Colocalization of Cystatin M/E and its Target Proteases Suggests a Role in Terminal Differentiation of Human Hair Follicle and Nail

22 citations , November 2008 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study observed that cathepsin L and transglutaminase 3 colocalize in the human hair bulb and nail matrix, suggesting their involvement in terminal differentiation within these epidermal appendages.

research Characterization of Mouse Profilaggrin: Evidence for Nuclear Engulfment and Translocation of the Profilaggrin B-Domain during Epidermal Differentiation

25 citations , October 2002 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study characterized the mouse profilaggrin gene, finding it structurally identical to its human counterpart, and noted differences in protein-coding regions that could impact epidermal differentiation.

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community Everything you ever wanted to know about Pelage Pharma's PP405: how it works and what to expect

126 upvotes 3 months ago

PP405 may encourage earlier hair growth and slightly increase visible hair count but does not reverse hair follicle miniaturization in male pattern baldness. It does not address damage to the dermal papilla or broken Wnt signaling.

community Confused why people are calling PP405 a cure...it never claimed to be able to undo miniaturization or revert vellus back to terminal hairs. It seems to be more of a growth stimulant like minoxidil.

in Research/Science 55 upvotes 1 year ago

PP405 is not a cure for hair loss but may reactivate dormant hair follicles, similar to minoxidil. It is unlikely to help with miniaturized or vellus hairs and is still in trial phases, with availability expected around 2030.

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learn Thymosin Beta 4

learn Osteopontin

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

learn Lipodermal base

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