Late Yes-associated protein activity may limit skin scarring by killing damaged repair cells
In repeatedly injured, sun-damaged skin, a late pulse of Yes-associated protein (YAP) may trigger p73-dependent death of damaged myofibroblasts while preserving strength. Benefit persisting after verified YAP–p73 uncoupling would reject this mechanism.
Stage of verification
- Hypothesis published2026-09-26
- Indirect evidenceAssessed at 4 of 10
- Direct testAwaited
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Kind of knowledge gap
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Target map
Every target of every published hypothesis, each with the actions a hypothesis can propose on it. The targets and the actions of this hypothesis are drawn solid.
Regulatory protein
YAP
A protein involved in tissue repair and the activation of apoptosis through interaction with p73
Where this hypothesis actsPhotodamaged skin undergoing dermal repair after repeated injury
Hypotheses on this target 5
Inhibition3
Activation2
Lower level
Higher level
Protection from degradation
Function restoration
Function preservation
What is proposed
Inhibition
Suppress activity temporarily, then restore a short late pulse
With whatNot stated in the record
HowControl YAP activity over time while preserving its Tyr357 phosphorylation and interaction with p73 during the late pulse
Possible result
Possible reduction in residual contracture and scarring while preserving tensile strength
From the recordПоэтому безопасный режим включает временное подавление с последующим восстановлением YAP-зависимого удаления этих клеток.
Fibroblast or stromal cell
Myofibroblasts
Cells involved in tissue repair that can undergo apoptosis as their participation in healing ends
Where this hypothesis actsDamaged myofibroblasts with an uncompleted apoptosis programme after repeated injury to photodamaged skin
Hypotheses on this target 1
Senomorphic suppression
Reprogramming
Transplantation
Elimination1
Population balance
What is proposed
Elimination
Induce apoptosis in damaged myofibroblasts at the end of dermal repair
With whatNot stated in the record
HowRestore a short late YAP pulse that activates apoptosis through Tyr357 phosphorylation and binding to p73
Possible result
Possible completion of dermal repair with less residual contracture and scarring
From the recordНоситель незавершённого процесса представляет собой повреждённые миофибробласты с неисполненной программой апоптоза.
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Every target read from the published hypotheses, each kind around its pictogram. A larger mark means more hypotheses act on that target. Point at a mark and the actions proposed on it branch out of it.
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The logic
The train of thought that ends in this hypothesis. Each stage is the reason the next exists. The master question narrows to a goal, the goal to an unknown nobody has closed, the unknown to the hypothesis proposed here. Every step below says what it rests on and what carries it.
Repeated healing may leave skin with lasting scars and tightening instead of restoring its earlier function. The unexpected move is to briefly restore a signal whose suppression is intended to reduce scarring, so that damaged repair cells can complete a cell-death program. That reversal is a proposal generated by the pipeline, not a result measured in repeatedly injured skin.
- Early YAP suppression is proposed to reduce the formation of scar tissue.
- Continued suppression is proposed to leave damaged myofibroblasts alive after their repair work should end.
- A brief late return of YAP activity is proposed to attach a phosphate group at tyrosine 357 and enable binding to p73, switching YAP from supporting cell growth toward promoting cell death.
- The YAP–p73 partnership is proposed to trigger controlled death in the damaged repair cells.
- Removal of those cells is predicted to reduce remaining scar tissue and contracture, persistent tightening of healed tissue, while preserving resistance to tearing.
A repair crew needs a short final shift to clear the site before leaving. Keeping the gate locked can stop further building while also preventing that final clearance.
Where the picture breaks: The proposed clearance involves repair cells dying through a particular molecular interaction. Cells do not follow a shared work schedule, and reopening YAP activity could have effects beyond clearance.
- Master questionstep 01 of 04
A therapy should restore the functional condition of middle-aged people's skin toward that of young people's skin.
Rests on: The stated goal is improved skin function, but the input does not define which functions or what would count as reaching a youthful condition.
Stated in the chain - Goal pillarstep 02 of 04
Limiting damage that accumulates through repeated healing is selected as a route toward better skin function.
Rests on: The goal requires a reason to select accumulated repair damage as a cause of reduced function in middle age.
AssumptionThe chain assumes that damage from repeated healing contributes to the functional difference between middle-aged and young skin, and that limiting it would narrow that difference.
- Gap questionstep 03 of 04
A period of YAP suppression after repeated injury might reduce scarring without weakening skin, but the outer skin layer, deeper supporting layer, and structures such as hair follicles and glands might require different switching times.S2
Rests on: YAP-related signaling provides a stated literature basis for investigating scarring. An abstract from Acta histochemica (2025) reports reduced scarring with treatment targeting TEA domain (TEAD) proteins, gene-regulating partners of YAP; it does not establish a safe suppression period, preserved strength, or compatible timing across skin structures.
Supported by literature - Hypothesisstep 04 of 04
A short late burst of YAP activity is proposed to finish repair by triggering apoptosis, a controlled cell-death process, in damaged myofibroblasts, repair cells that contract wounds and produce scar material. The proposed switch requires phosphorylation, attachment of a phosphate chemical group, at YAP's tyrosine 357 position and binding to p73. Continued suppression would preserve these damaged cells; temporary suppression followed by restored activity could remove them. Separating YAP's interactions with TEAD and p73 might preserve other skin repair functions while limiting scarring.S3S4
Rests on: The timing question leaves room for different early and late roles. A bioRxiv preprint (2025) reports a drug-induced switch toward YAP-associated cell death involving modification at tyrosine 357 in bone cancer, while Cancer Cell International (2018) reports drug-induced YAP binding to p73 and increased activity of cell-death genes in breast cancer cells. These findings supply borrowed components, not evidence that the proposed late switch occurs in damaged skin repair cells.
Supported by literature
What is carried, and what is not. Screened sources speak to parts of three of the five proposed links: limiting scar formation, changing YAP toward a cell-death role, and engaging p73-associated death programs. The scarring evidence and drug-treated cancer-cell evidence described above come from different settings; none establishes the sequence, its late timing, or preserved skin strength end to end.
Where the reasoning is carried by something unstated · 1
- Goal pillar. The chain assumes that damage from repeated healing contributes to the functional difference between middle-aged and young skin, and that limiting it would narrow that difference.
How a result here could mislead · 3
- A benefit after restoring YAP could be credited to a brief late burst even if ordinary withdrawal of suppression produces the same activity pattern and outcome. What closes it: The specified ordinary-withdrawal comparison must be accompanied by measurements of YAP activity over time. The burst must be shown to differ from ordinary withdrawal, and its timing and duration must be fixed before outcomes are assessed; the supplied specification gives no numerical settings.
- Loss of benefit after disrupting YAP–p73 binding could reflect damage to other protein functions rather than loss of the proposed cell-death route. What closes it: Disruption must be verified to separate YAP from p73 while preserving other relevant functions. As the specification states, changing tyrosine 357 alone does not establish that selectivity; early cell movement, average YAP–TEAD activity, and variation in gene-activity responses must also remain comparable.
- Less scar tissue could be mistaken for successful removal of damaged repair cells when it instead reflects weaker repair or altered timing among cells. What closes it: The test must connect controlled death to the previously marked damaged myofibroblasts, measure resistance to tearing alongside scarring and tightening, and assess variation in when cells activate repair genes. Otherwise the outcome does not separate the proposed removal mechanism from the timing-based rival.
What would make this wrong. The proposed mechanism would be contradicted if the late YAP burst retained its benefit after verified selective disruption of YAP–p73 binding, with other relevant protein functions preserved. Outcomes governed instead by variation in the timing of cells' gene-activity responses, without the required late removal of damaged repair cells, would favor the supplied rival explanation.
What it would change. If the proposal held, limiting accumulated repair damage would require preserving a late cell-removal phase as well as suppressing early scar formation. Work toward restoring youthful skin function would therefore need to distinguish those phases when selecting treatment timing. An initial result in reconstructed skin made from donors aged 40–60 would still not establish youthful function in people, compatible repair across all skin structures, or preserved sensation and temperature control; the specification reserves those latter functions for tissue supplied with nerves and circulating fluid.
Sources read · 10
Topical GDF11 accelerates skin wound healing in both type 1 and 2 diabetic mouse models. · Biochemical and biophysical research communications · 2020
“Further study revealed that GDF11 activated the YAP-Smad2/3-CTGF fibrotic signaling pathway by reversing HG-induced upregulation of phosphorylated form of YAP (p-YAP), increases p-Smad2/3 levels, and restoring HG-induced repression of CTGF expression by GDF11.”
Does not settle: Источник показывает связь пути YAP-Smad2/3-CTGF с дермальным фиброзом при заживлении ран у мышей с диабетом. Он не устанавливает поздний импульс YAP, фосфорилирование Tyr357, взаимодействие с p73, апоптоз повреждённых миофибробластов, последствия повторных фотоповреждений или режим временного подавления и восстановления YAP.
Targeting TEAD would be a potential strategy for scarless wound repair: A preliminary study. · Acta histochemica · 2025
“Our findings confirmed VT107 exhibited favorable effect on preventing scarring, manifesting as reducing fibroblast proliferation and collagen denaturation, decreasing TGF-β1 and collagen deposition, as well as connective tissue growth factor (CTGF) expression.”
Does not settle: Аннотация не устанавливает поздний импульс YAP, фосфорилирование Tyr357, связывание с p73, апоптоз повреждённых миофибробластов, повторные фотоповреждения кожи или режим временного подавления YAP с последующим восстановлением.
EGR1 Mediates Riluzole-Induced Apoptosis in Osteosarcoma via the Yap/p73-Bax Signaling Axis. · bioRxiv : the preprint server for biology · 2025
“Riluzole treatment shifts the pro-proliferative role of Yap to pro-apoptotic via phosphorylation of Yap at Y357 residue ( ).”
Does not settle: Источник описывает остеосаркому при лечении рилузолом, а не повторно повреждённую фотоповреждённую кожу, дермальные миофибробласты или рубцевание. Он не устанавливает поздний краткий импульс YAP, безопасный режим временного подавления с восстановлением YAP, последствия разобщения взаимодействий с TEAD и p73 или стабилизацию SPV_3.
Arenobufagin induces MCF-7 cell apoptosis by promoting JNK-mediated multisite phosphorylation of Yes-associated protein. · Cancer cell international · 2018
“Following ABF treatment, YAP accumulated in the nucleus and bound to p73, which enhanced the transcription of the pro-apoptotic genes Bax and p53AIP1 .”
Does not settle: Источник описывает клетки рака молочной железы MCF-7 после воздействия аренобуфагина. Он не устанавливает этот механизм в фотоповреждённой коже, миофибробластах, при повторных повреждениях или в поздней фазе дермальной репарации; также остаются открытыми режим временного подавления и восстановления YAP, влияние на рубцевание, эпидермис и придатки кожи.
Riluzole-induced apoptosis in osteosarcoma is mediated through Yes-associated protein upon phosphorylation by c-Abl Kinase. · Scientific reports · 2021
“Riluzole caused translocation of YAP from the cytoplasm to the nucleus, indicating YAP’s role in apoptosis. Both Riluzole-induced phosphorylation of YAP at tyrosine 357 and Riluzole-induced apoptosis were blocked by inhibitors of c-Abl kinase.”
Does not settle: Источник описывает апоптоз в клетках остеосаркомы при воздействии рилузола. Он не устанавливает наличие позднего импульса YAP при репарации фотоповреждённой кожи, участие повреждённых миофибробластов, влияние повторных повреждений, образование рубца, безопасный режим временного подавления YAP или разобщение взаимодействий YAP с TEAD и p73.
Post-translational deregulation of YAP1 is genetically controlled in rat liver cancer and determines the fate and stem-like behavior of the human disease. · Oncotarget · 2016
“These findings were associated with a sharp decrease in phosphorylated Yap1-ser127 and increase in phosphorylated Yap1-tyr357 in HCC of both rat strains, with respect to normal liver, with lowest values of pYap1-ser127 in F344 HCC and highest values of pYap1-tyr357 in BN HCC, respectively (Figure ).”
Does not settle: This source does not examine photodamaged skin, repeated injury, dermal repair, myofibroblasts, a late transient YAP pulse, YAP-p73 binding, or temporary YAP suppression followed by restoration. It reports associations in rat and human hepatocellular carcinoma, not a causal skin-scarring mechanism.
Topical medium-length PDRN enhances dermal extracellular matrix repair in photodamaged skin via PI3K-Akt/TGF-β-regulated pathways. · PloS one · 2026
“At the tissue level, PDRN-850K treatment enhanced the expression of multiple collagen subtypes, elastic fiber–associated proteins, and the mechanotransduction regulator YAP in UV-irradiated ex vivo skin.”
Does not settle: Источник не исследует повторные повреждения кожи, поздний импульс YAP, фосфорилирование Tyr357, связывание YAP с p73, апоптоз повреждённых миофибробластов, подавление YAP или разобщение его взаимодействий с TEAD и p73.
Nelumbo nucifera extract alleviates UVB-induced hyperpigmentation via NOX4-mediated AMPK-YAP-ATG5 signaling pathway. · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2026
“Mechanistically, NnE suppressed the interaction between AMPK and YAP, thereby promoting nuclear translocation of YAP and upregulation of key autophagy-related genes, including ATG5, and ultimately enhancing autophagic activity.”
Does not settle: This source does not assess dermal repair, scarring, repeated injury, myofibroblasts, apoptosis, YAP Tyr357 phosphorylation, p73 binding, TEAD interactions, or a timed YAP suppression-and-restoration regimen.
Clinical, mechanistic, and therapeutic landscape of cutaneous fibrosis. · Science translational medicine · 2024
“Fibroblasts as the effectors of fibrosis Normally sparsely scattered throughout the dermis, fibroblasts are the principal cells that produce and remodel the ECM during skin homeostasis and fibrosis”
Does not settle: Источник не устанавливает роль позднего импульса YAP, фосфорилирования Tyr357, взаимодействия YAP-p73, апоптоза повреждённых миофибробластов или режима временного подавления YAP после фотоповреждения кожи.
Pharmacological blockade of TEAD-YAP reveals its therapeutic limitation in cancer cells. · Nature communications · 2022
“However, no significant cell killing was observed. These results are consistent with our observation that TEAD–YAP blockade only leads to transient cell static state rather than cell killing, in most of YAP/TAZ-dependent cancer cell lines.”
Does not settle: Источник описывает блокаду комплекса TEAD-YAP в линиях раковых клеток. Остаются открытыми поздний импульс YAP в фотоповреждённой коже, фосфорилирование Tyr357, участие p73, апоптоз повреждённых миофибробластов, повторные повреждения, рубцевание и безопасный режим временного подавления YAP.
The gap this hypothesis explains
Two established results predict opposite outcomes, and both cannot be right.
After repeated skin injury, can protein suppression preserve strength and prevent scars, or do structures need conflicting schedules?
Original wording · exactly as the pipeline generated it
Существует ли после повторного повреждения окно подавления YAP, которое предотвращает рубцевание без потери прочности, или эпидермис, дерма и придатки требуют несовместимых моментов переключения?
What this question is asking
The question concerns whether the timing of suppressing Yes-associated protein (YAP), a protein involved in how cells respond to physical forces, can separate scar formation from the rebuilding needed for strong skin. It asks whether, after repeated injury, one treatment period can prevent scarring without reducing strength across the epidermis, the outer skin layer; the dermis, the supporting layer beneath it; and skin appendages, structures such as hair follicles and sweat glands. The decisive comparison is between a period compatible with all these structures and conflicting periods that protect one structure at another's expense. The question assumes that reducing force-related signals limits scarring, that insufficient YAP activity can impair repair, and that different skin structures recover on different schedules. Its broader functional targets include skin that returns to shape after deformation, sensation, sweating, and limited remaining stiffness, but the supplied material gives no numerical deadlines or acceptable limits.
- Yes-associated protein (YAP)
- A protein that helps regulate cellular responses, including responses to physical forces. Here it is the target of suppression; the supplied studies connect YAP-related activity with scar-forming repair in one setting and its inhibition with regeneration in another.
- YAP suppression or inhibition
- Reducing YAP activity. Drug treatment and genetic removal are different ways of doing this, and neither automatically establishes that suppression is temporary or equally strong in every skin structure.
- Treatment window
- A period after injury during which an intervention produces the desired combination of outcomes. A successful treatment at one time does not establish the earliest or latest effective time.
- Mechanical activation, force-related signalling, or mechanotransduction
- The process by which cells convert physical forces, such as stretching or tension, into biological signals. The question concerns whether reducing this process can limit scars while preserving repair.
- Epidermis
- The outer layer of skin. It is one of the structures whose repair timing the question asks to compare.
- Dermis
- The supporting skin layer beneath the epidermis. It contains cells and surrounding structural material involved in skin strength and scar formation.
- Skin appendages
- A collective name for structures associated with skin, including hair follicles and sweat glands. Recovery of appendages does not by itself demonstrate recovery of every type or of functions such as sweating.
- Fibroblasts
- Cells that produce and remodel much of the material supporting tissue. They are the cells in which YAP was specifically removed in one part of the mouse study.
- Matrix
- The material surrounding cells that provides structural support. Matrix degradation means breakdown of that material; the supplied sources do not establish the proposed connection between reduced tension and its degradation.
- Collagen
- A family of structural proteins in the material surrounding cells. Collagen contributes to tissue support and also accumulates during scar formation, so reduced accumulation alone does not establish preserved strength.
- Fibrosis
- Accumulation of fibrous supporting tissue, associated here with scarring. The supplied diabetic-mouse study reports that stimulating dermal fibrosis contributed to healing, illustrating why faster repair and less scarring are distinct outcomes.
- Regeneration
- Restoration of tissue structures following injury. The specific structures and functions recovered must be identified; the word alone does not establish complete restoration of skin function.
- Mechanical strength
- The ability of tissue to withstand physical force without failing. It differs from stiffness, which concerns resistance to deformation, and from the ability to return to shape afterward.
- Verteporfin
- A drug described in the supplied studies as an inhibitor of YAP. It was used to interfere with force-related signalling during wound repair.
- Genetic removal
- An alteration that eliminates a gene's function in the targeted cells. In the relevant mouse study, this targeted YAP in fibroblasts; it does not establish the effects of a reversible drug schedule throughout skin.
- VT107
- The compound tested in the preliminary scar-prevention study. The supplied abstract reports reduced scarring-related changes but does not establish a strength-preserving treatment period.
- Growth differentiation factor 11 (GDF11)
- A signalling protein applied to skin wounds in the supplied diabetic-mouse study. Its reported healing effect involved increased dermal fibrosis through a pathway including YAP.
- Diabetes
- A group of conditions involving impaired regulation of blood sugar. It defines the disease setting of the GDF11 mouse study and limits direct comparison with other wound settings.
Suppressing mechanical activation reduces scarring, insufficient YAP activity impairs repair, reduced tension supports matrix degradation, and different skin structures recover asynchronously, creating potentially incompatible intervention periods.
The assumption concerns how physical forces and YAP influence repair in the skin's outer layer, supporting layer, and embedded structures such as glands. It proposes that reducing these signals limits scars but can also weaken rebuilding or encourage breakdown of the material surrounding cells, with each structure needing the signals at a different time. If established, this would explain why treatment timing could determine whether scar prevention preserves skin function.
Blocking force-related signalling involving YAP reduced scarring in mouse and pig wound studies, supporting that part of the premise [S5, S8]. However, the mouse study also reports recovery of mechanical strength and skin appendages under YAP inhibition, which limits any blanket claim that inhibition necessarily compromises repair [S5]. A separate study reports improved healing partly through increased scar-forming tissue production involving YAP, but this does not establish that insufficient YAP causes impaired repair [S1]. The supplied sources do not establish reduced tension causing breakdown of the surrounding tissue material, asynchronous recovery requiring different treatment periods, or incompatible timing after repeated injury. These unsupported parts remain unestablished rather than refuted.S1S5S8
The same question asked without the part nothing read establishes:
- After repeated skin injury, is there a period of YAP suppression that reduces scarring while preserving strength and repair of the epidermis, dermis, and skin appendages?
- After repeated skin injury, how do the effects of YAP suppression on scarring, strength, and repair of different skin structures depend on treatment timing?
- A shared treatment period exists Suppressing YAP during that period would reduce scar formation while allowing the different skin structures to rebuild sufficiently to retain strength. This would establish compatibility for those outcomes after repeated injury, but would not by itself establish restored sensation or sweating.
- Skin structures require conflicting periods A period that reduces scar formation in one structure would overlap with a period when another needs YAP activity for repair. Applying the same suppression schedule throughout the skin would therefore trade scar reduction against repair or strength in another structure.
- No strength-preserving period is found Suppression might reduce scars only when strength is compromised, or it might fail to reduce scars after repeated injury. Either outcome would leave the desired combination unmet without establishing that conflicting schedules between structures caused the failure.
Repair must rebuild tissue that holds together under force while limiting the tissue changes that produce scars. One mouse study reports that blocking YAP-related signalling allowed recovery of skin structures and mechanical strength, so these outcomes were compatible in that setting [S5]. If this compatibility also held after repeated injury, reduced scarring could coexist with retained strength; if timing requirements conflicted, treating all skin structures during the same period could compromise some aspects of repair. Assuming compatibility from scar appearance alone would leave strength, sensation, sweating, and recovery after further injury unaccounted for.
Подавление механической активации уменьшает рубцевание в моделях, RL-1; недостаточная активность YAP ухудшает восстановление, а сниженное натяжение поддерживает деградацию матрикса.
Обратимая деформация, чувствительность и потоотделение восстанавливаются за заданные дни и недели; остаточная жёсткость после повторных циклов не превышает допустимый предел.
Не установлено, существует ли совместимое для прочности и предотвращения фиброза окно воздействия при неодновременном восстановлении разных структур кожи.
The mechanism it proposes
The engine's own statement of the hypothesis, in full.
Проверяемая гипотеза: после повторных повреждений фотоповреждённой кожи завершение дермальной репарации требует короткого позднего импульса YAP, который через фосфорилирование по Tyr357 и связывание с транскрипционным фактором p73 запускает апоптоз повреждённых миофибробластов. Подавление YAP уменьшает раннее образование рубцовой ткани, но его продолжение через этот импульс сохраняет клетки, которые должны завершить своё участие в заживлении. Носитель незавершённого процесса представляет собой повреждённые миофибробласты с неисполненной программой апоптоза. Поэтому безопасный режим включает временное подавление с последующим восстановлением YAP-зависимого удаления этих клеток. Разобщение взаимодействий YAP с TEAD и p73 может позволить сохранить восстановление эпидермиса и придатков при прекращении фиброза. Устранение этого механизма должно стабилизировать SPV_3.
Testing and possible results
The prediction that would tell it apart
A hypothesis that predicts what its rivals predict is not worth running an experiment over. This is the observation on which this one differs.
В модели повторного повреждения сравнивают непрерывное подавление YAP, временное подавление с обычной отменой и тот же режим с коротким поздним восстановлением активности YAP. Гипотеза предсказывает, что поздний импульс уменьшит остаточную контрактуру и рубцевание при сохранении разрывной прочности. Эффект должен сопровождаться апоптозом предварительно меченных повреждённых миофибробластов и исчезнуть при избирательном нарушении взаимодействия YAP–p73. При этом ранняя миграция, средняя активность YAP–TEAD и вариабельность транскрипционных ответов должны быть сопоставимы. Сохранение пользы импульса после подтверждённого разобщения YAP–p73 опровергнет предложенный механизм. Если вместо этого исход определяется разбросом транскрипционных задержек, преимущество получит IH_Q_L3_M_G4_2_02.
Would tell it apart from at least one rival. The prediction specifies observable changes in contracture, scarring, tensile strength and apoptosis, alongside an explicit rejection condition. No rival prediction is supplied. Only a bench experiment would settle it.
What testing it would take
The engine's own read on whether this is testable with methods that already exist.
Начальная проверка возможна в реконструированной коже из клеток доноров 40–60 лет с управляемой активностью YAP и отслеживанием судьбы фибробластов. Разобщение YAP–p73 необходимо предварительно проверить на сохранение других функций белков; одной замены Tyr357 для доказательства специфичности недостаточно. Повторное повреждение проводят после отмены воздействия. Полноценную чувствительность и терморегуляцию такая модель не воспроизводит: сохранение этих функций требует последующей проверки в иннервируемой и перфузируемой ткани.
Other explanations
Every other hypothesis the engine wrote for the same gap, and the observation that would separate the two.
В модели повторного повреждения сравнивают непрерывное подавление YAP, временное подавление с обычной отменой и тот же режим с коротким поздним восстановлением активности YAP. Гипотеза предсказывает, что поздний импульс уменьшит остаточную контрактуру и рубцевание при сохранении разрывной прочности. Эффект должен сопровождаться апоптозом предварительно меченных повреждённых миофибробластов и исчезнуть при избирательном нарушении взаимодействия YAP–p73. При этом ранняя миграция, средняя активность YAP–TEAD и вариабельность транскрипционных ответов должны быть сопоставимы. Сохранение пользы импульса после подтверждённого разобщения YAP–p73 опровергнет предложенный механизм. Если вместо этого исход определяется разбросом транскрипционных задержек, преимущество получит Less variable Yes-associated protein gene activation timing may widen safe suppression windows.
- Rival 01 of 01What would separate them
Less variable Yes-associated protein gene activation timing may widen safe suppression windows predicts: В одной серии моделей независимо изменяют начало подавления YAP и вариабельность транскрипционных ответов. Для сравнения подбирают режимы с одинаковыми средними уровнями ядерного YAP, средним выходом заранее выбранных восстановительных и профибротических генов, числом делений и исходным повреждением. Гипотеза предсказывает, что уменьшение разброса времени транскрипционных событий расширит диапазон начала подавления, при котором одновременно сохраняются прочность, обратимая деформация и восстановление барьера. Польза должна сохраняться при разобщении YAP–p73. Подтверждённое изменение вариабельности без изменения безопасного окна опровергнет её как определяющий механизм; специфическая зависимость результата от позднего YAP–p73-импульса поддержит this hypothesis.
Why this is not the mainstream account
The engine is asked to say what its hypothesis would overturn and what would surprise a specialist. This is its answer.
У иглистых мышей Acomys подавление взаимодействия Yap–TEAD препятствовало регенерации и способствовало фиброзу; это наблюдение допускает полезную позднюю роль Yap, но не устанавливает участие p73. [Исследование регенерации ушной раковины Acomys](https://pubmed.ncbi.nlm.nih.gov/34610329/). Независимая молекулярная опора: фосфорилирование YAP по Tyr357 киназой c-Abl усиливало взаимодействие с p73 и активацию проапоптотических генов при повреждении ДНК. [Первичное исследование YAP–p73](https://doi.org/10.1016/j.molcel.2007.12.022).
Механобиология кожного рубцевания. Пересмотра потребует модель завершения репарации, относящая позднюю активность YAP преимущественно к поддержанию миофибробластов. Учебная глава, которую затрагивает результат: «Воспаление и репарация» в Robbins & Cotran Pathologic Basis of Disease, разделы о завершении грануляционной ткани и фиброзе. Новое положение: после повторного повреждения короткая поздняя активация YAP необходима для удаления повреждённых миофибробластов.
Короткое повышение активности YAP после закрытия повторной раны уменьшает позднее рубцевание лучше продолжения его подавления, сохраняет прочность и действует через YAP–p73-зависимую гибель повреждённых миофибробластов. Такой результат изменит направление позднего вмешательства с подавления YAP на восстановление строго определённой его функции.
В выполненном поиске по сочетаниям YAP, p73, withdrawal, wound и fibrosis не найдено утверждения, что обязательный импульс YAP после его временного подавления обеспечивает сохранение прочности при повторной репарации фотоповреждённой человеческой кожи. Проапоптотическая функция YAP–p73 уже известна; новизна относится к её предполагаемой обязательности и последовательности вмешательств в данном контексте. Отсутствие такой гипотезы во всей литературе не доказано, поэтому соответствие критерию полной новизны остаётся предварительным.
What stands behind it
Which of the figures above have a study behind them, which are the engine's own, and what it would take to refute the hypothesis. This audit never judges the idea.
This hypothesis states no figure and cites no study, so there is nothing here to trace.
What it would take to refute it. Nothing already retrieved carries the prediction’s terms and it names no measurement this layer can route to a public dataset, so the bench is the residual — not a finding against it.
0 citation handles extracted; 1 Europe PMC search run; 0 records examined; 0 sources stored for enrichment, 0 with full text. A citation that did not resolve is a bibliographic failure, not proof that no such paper exists, and no hypothesis is blocked by this audit.