Abstract:
:Pro- and anti-apoptotic members of the Bcl-2 family are fundamental in the control of apoptosis. Among them, Bax plays a key role in apoptosis induction by mediating the release of apoptogenic factors from mitochondria to the cytosol. In this report, we investigated, by immunohistofluorescence, the in vivo distribution of Bax in normal human epidermis before and 24 h after exposure to solar-simulated radiation. Bax expression was evaluated with three different, Western blot pretested, anti-Bax antibodies (Ab) and correlated with markers of keratinocyte differentiation and apoptosis using anti-beta(1) integrin and anti-active caspase-3 Abs respectively. Using anti-Bax N20 and A-3533 polyclonal Ab, we found that, whereas undifferentiated keratinocytes of the basal proliferative compartment contained Bax in the cytosol, the differentiated suprabasal cells had Bax mainly in the nucleus. This immunoreactivity pattern was not modified by skin irradiation. Interestingly, the well known apoptosis-related Bax redistribution to mitochondria in response to a cell death signal, could be detected only with yet another, the 2D2 monoclonal Ab. This relocalization occurred specifically in apoptotic, active caspase-3 positive cells of irradiated epidermis. Our data highlight the differentiation- and apoptosis-associated changes in the pattern of Bax subcellular and cellular distribution as uncovered by different anti-Bax Abs and suggest that Bax undergoes successive activation that progresses in parallel with keratinocyte differentiation and apoptosis.
journal_name
Exp Dermatoljournal_title
Experimental dermatologyauthors
Zuliani T,Obriot H,Tual M,Lachman-Weber N,Dumas M,Formstecher P,Polakowska R,Ratinaud MHdoi
10.1111/j.1600-0625.2007.00660.xsubject
Has Abstractpub_date
2008-02-01 00:00:00pages
125-32issue
2eissn
0906-6705issn
1600-0625pii
EXD660journal_volume
17pub_type
杂志文章abstract::Murine model systems are critically required tools for the investigation of unknown mechanisms of melanoma development and metastasis and for developing more efficient therapies. The Tg(Grm1)EPv melanoma mouse model is characterized by spontaneous development of pigmented cutaneous melanomas at hairless skin regions, ...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/j.1600-0625.2012.01560.x
更新日期:2012-10-01 00:00:00
abstract::Recent studies have demonstrated that keratinocytes closely participate in sensory transduction, and therefore, intra-epidermal free nerve endings are not exclusive transducers of pain. This discovery implies the existence of close afferent communication from keratinocytes to sensory neurons. Although reciprocal inter...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
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abstract::Vitiligo is a chronic skin disease characterized by the appearance of zones of depigmentation. It is mostly described as an autoimmune disease in which the immune system destroys the melanocytes. Consistent with this origin, genetic studies have implicated genes encoding proteins mediating the immune response targetin...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.0906-6705.2003.00104.x
更新日期:2003-12-01 00:00:00
abstract::Leukotrienes constitute a group of lipid mediators, which may be subdivided into two groups, with leukotriene B4 on the one hand and cysteinyl leukotrienes on the other. Although leukotrienes are abundantly expressed in skin affected by diverse chronic inflammatory diseases, including atopic dermatitis, psoriasis, pem...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.12239
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abstract::We aimed to evaluate the effect of small interfering RNA (siRNA) targeting CTGF on extracellular matrices (ECMs) metabolism in normal and SSc fibroblasts. Normal and SSc fibroblasts were transfected with CTGF-specific siRNAs to silence CTGF synthesis. After silencing CTGF, production of type I collagen and matrix meta...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2009.00999.x
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abstract::Chronic exposure to ultraviolet (UV) radiation alters components of the skin. We previously reported that chronic low-dose UV irradiation induced wrinkle formation but did not significantly alter dermal components of hairless mice. In the present study, we examined whether the epidermal changes by UV irradiation could...
journal_title:Experimental dermatology
pub_type: 杂志文章
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更新日期:2003-01-01 00:00:00
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.13784
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journal_title:Experimental dermatology
pub_type: 杂志文章
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2008.00776.x
更新日期:2009-03-01 00:00:00
abstract::Using in situ hybridization, human hair keratin basic 1 (hHb1) gene expression was investigated in human normal scalp. hHb1 transcripts were specifically detected in the cortical cells of hair shaft but neither in the outer and inner root sheaths, nor in the hair cuticle or the medulla. hHb1 expression was detected st...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.1997.tb00152.x
更新日期:1997-04-01 00:00:00
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journal_title:Experimental dermatology
pub_type: 杂志文章
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更新日期:2012-01-01 00:00:00
abstract::The p53 gene is mutated in numerous human cancers. We used it as a molecular target to characterize and try to understand the induction of mutations in human skin cancers. About 40-50% of all skin cancers in normal individuals and 60-80% of the DNA-repair-deficient xeroderma pigmentosum patients exhibit p53 mutations....
journal_title:Experimental dermatology
pub_type: 杂志文章
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更新日期:2002-01-01 00:00:00
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.12900
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journal_title:Experimental dermatology
pub_type: 信件
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更新日期:2014-11-01 00:00:00
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2007.00687.x
更新日期:2008-05-01 00:00:00
abstract::We have employed a panel of antibodies directed against several newly-defined and well-characterized components of the epidermal basement membrane (BM) to investigate the biology of basal cell carcinoma (BCC) by indirect immunofluorescence and to determine whether alterations in BM components may play a significant ro...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.1993.tb00022.x
更新日期:1993-06-01 00:00:00
abstract::Thymic stromal lymphopoietin (TSLP) induces naïve CD4+ T cells to produce Th2 cytokines. In addition, to low production of Th2 cytokines, strong Th1 response, which plays an important role in vitiligo development, has been induced by blockade of TSLP or TSLP receptor. This study examined whether a functional TSLP poly...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2009.00897.x
更新日期:2009-12-01 00:00:00
abstract::Activating transcription factor 3 (ATF3) expression is increased in erythema multiforme and is regulated by IFN-gamma in human keratinocytes. Experimental Dermatology 2010; 19: e310-e313. Abstract: Activating transcription factor 3 (ATF3) is a member of the ATF/cyclic AMP responsive element-binding protein (CREB) fami...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/j.1600-0625.2009.01008.x
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.14115
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journal_title:Experimental dermatology
pub_type: 杂志文章
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journal_title:Experimental dermatology
pub_type: 杂志文章,评审
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更新日期:2019-12-01 00:00:00
abstract::Even though anthralin is a well-established topical therapeutic agent for psoriasis, little is known about its effects and biochemical mechanisms of signal transduction. In contrast to a previous report, we found that anthralin induced time- and concentration-dependent phosphorylation of epidermal growth factor recept...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.0906-6705.2004.00119.x
更新日期:2004-02-01 00:00:00
abstract::The early growth response (Egr)-1 is a transcriptional factor which plays an important role in the regulation of cell growth, differentiation, cell survival and immune responses. Emerging evidences including our data demonstrate that the Egr-1 expression is up-regulated in the psoriatic skin lesions. The purpose of th...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.12554
更新日期:2014-12-01 00:00:00
abstract::Recent progress with innovative, experimental gene therapy approaches in animals, and recent improvements in our understanding and manipulation of stem cells, gene expression and gene delivery systems, have raised plenty of hopes in essentially all branches of clinical medicine that hitherto untreatable or poorly mana...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.1999.tb00392.x
更新日期:1999-10-01 00:00:00
abstract::A feature of black African hair is an apparent increased fragility of the hair shaft compared to other ethnic groups (as measured by the tensile force needed to break the hair fibre). This has certain similarities to that reported for trichorrhexis nodosa (weathering secondary to physical damage) and trichothiodystrop...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.0906-6705.2005.00288.x
更新日期:2005-04-01 00:00:00
abstract::In a large-scale ageing study, 30 inbred mouse strains were systematically screened for histologic evidence of lesions in all organ systems. Ten strains were diagnosed with similar nail abnormalities. The highest frequency was noted in NON/ShiLtJ mice. Lesions identified fell into two main categories: acute to chronic...
journal_title:Experimental dermatology
pub_type: 杂志文章
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更新日期:2019-04-01 00:00:00
abstract::Shprintzen-Goldberg syndrome (SGS) is a rare disorder characterized by a Marfan-like habitus, mental retardation and craniosynostosis. Cardiac abnormalities, such as aortic root dilation have also been noted as well as several skeletal abnormalities. Its nosological status is unclear as it is hard to delineate SGS fro...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2007.00648.x
更新日期:2008-04-01 00:00:00
abstract::Calcium-mediated signals play important roles in epidermal barrier formation, skin homoeostasis and wound repair. Calmodulin 4 (Calm4) is a small, Ca2+ -binding protein with strong expression in suprabasal keratinocytes. In mice, Calm4 first appears in the skin at the time of barrier formation, and its expression incr...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/exd.12568
更新日期:2015-01-01 00:00:00