Frontiers in Drug Design and Discovery

Volume: 4

More Than Skin Deep: The Human Skin Tissue Equivalent as an Advanced Drug Discovery Tool

Author(s): Alexandra S. Bause, Sarah D. Lamore and Georg T. Wondrak

Pp: 135-161 (27)

DOI: 10.2174/978160805202810904010135

* (Excluding Mailing and Handling)

Abstract

Advanced human tissue equivalents are an emerging drug discovery tool that aims at minimizing costly candidate attrition in later stages of preclinical and clinical development. 3-D cellular tissue models amenable to screening in 96-well plate format and drug monitoring in real time provide more accurate compound screening in a physiologically relevant context, not achievable in traditional two dimensional, single cell type-based assays. Currently, equivalents that represent the healthy or pathological physiology of human tissues including skin, vasculature, lung, prostate, and various malignant tumors are used for rapid activity screening, toxicity profiling, and pharmacokinetic characterization of compound libraries. Human skin equivalents with intact stratum corneum reconstructed in vitro from matrix-embedded dermal fibroblasts and epidermal primary keratinocytes closely resemble the complex architecture and functional complexity of skin. Using human skin equivalents, delivery of novel topical agents for photoprotection has been studied, and toxicity and activity profiling of skin care products and FDA-approved drugs including sunscreens has been performed. Importantly, human skin equivalents are better predictors of drug activity than available animal models as mouse and guinea pig skin do not reflect the architecture of human skin in terms of physico-optical properties such as light reflectance and scattering, epidermal thickness, cellularity, and biochemical composition. Recently, cellular composition of advanced commercial skin reconstructs has been further optimized by incorporation of melanogenic melanocytes and immunomodulatory dendritic (Langerhans) cells in order to assess drug modulation of cutaneous pigmentation, inflammation, photo-immunosuppression, and photo-carcinogenesis. Continuous progress in skin equivalent engineering will ensure the expanding role of skin equivalents in disease model-based assays for rapid identification and development of novel cutaneous therapeutics.

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      • 13. app/Models/UserAccess/UserAccess.php:1266
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      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Trial Access" as access_base_text, CASE j.type WHEN 111 THEN true ELSE false END as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"chapter" as access_level, j.chapter_id from `user_access_chapter_trail` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 316381173 and j.to_ip >=316381173 )) and ((j.from_date <= 1740498127 and j.to_date >= 1740498127 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.chapter_id = 2207) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Subscribed" as access_base_text, false as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"chapter" as access_level, j.chapter_id from `user_access_chapter_corporate` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 316381173 and j.to_ip >=316381173 )) and ((j.from_date <= 1740498127 and j.to_date >= 1740498127 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.chapter_id = 2207) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Token Based Access" as access_base_text, false as terms_popup, "R" as content_download_type, j.uc_id as restricted_user_access_key, "v" as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"chapter" as access_level, j.chapter_id from `user_access_chapter_token` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 316381173 and j.to_ip >=316381173 )) and ((j.from_date <= 1740498127 and j.to_date >= 1740498127 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.chapter_id = 2207)
      650μsalphaeurekaselec_live_10_06_2022UserAccess.php#1266
      Backtrace
      • 13. app/Models/UserAccess/UserAccess.php:1266
      • 14. app/Http/Controllers/ChapterController.php:1549
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select b.banner_link, b.banner_name, b.banner_script, b.banner_remarks, b.banner_file_name, b.banner_placement, bd.content_type, bd.content_id from `tbl_banner` as `b` inner join `tbl_banner_detail` as `bd` on `bd`.`banner_id` = `b`.`banner_id` inner join `users` as `u` on `u`.`id` = `b`.`updated_by` where `b`.`banner_ebook` = 1 and `bd`.`content_type` = 'B' and `bd`.`content_id` = 945 and `b`.`banner_from_date` <= 1740498127 and `b`.`banner_to_date` >= 1740498127 and `b`.`banner_status` = 'A' order by `b`.`banner_id` desc
      1.44msalphaeurekaselec_live_10_06_2022Banner.php#95
      Bindings
      • 0: 1
      • 1: B
      • 2: 945
      • 3: 1740498127
      • 4: 1740498127
      • 5: A
      Backtrace
      • 13. app/Models/Banner.php:95
      • 14. app/Http/helpers.php:404
      • 17. vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:124
      • 18. vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58
      • 19. vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:73
    • select count(*) as aggregate from `uc_cart_products` where cart_id='84bba598a6d309942d334880e703b1f7'
      410μsalphaeurekaselec_live_10_06_2022Cart.php#271
      Backtrace
      • 15. app/Models/Cart.php:271
      • 16. view::layouts._header:260
      • 18. vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:124
      • 19. vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58
      • 20. vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:73
    App\Models\Chapter
    1Chapter.php#?
    App\Models\Ebook
    1Ebook.php#?
        _token
        OMMGbRImElMpTXg416dzUjjsfIWugp3yzMqIJIqo
        uc_cart_id
        84bba598a6d309942d334880e703b1f7
        _previous
        array:1 [ "url" => "https://alpha.eurekaselect.com/chapter/2207" ]
        _flash
        array:2 [ "old" => [] "new" => [] ]
        PHPDEBUGBAR_STACK_DATA
        []
        path_info
        /chapter/2207
        status_code
        200
        
        status_text
        OK
        format
        html
        content_type
        text/html; charset=UTF-8
        request_query
        []
        
        request_request
        []
        
        request_headers
        0 of 0
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        request_cookies
        0 of 0
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        response_headers
        0 of 0
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        session_attributes
        0 of 0
        array:5 [ "_token" => "OMMGbRImElMpTXg416dzUjjsfIWugp3yzMqIJIqo" "uc_cart_id" => "84bba598a6d309942d334880e703b1f7" "_previous" => array:1 [ "url" => "https://alpha.eurekaselect.com/chapter/2207" ] "_flash" => array:2 [ "old" => [] "new" => [] ] "PHPDEBUGBAR_STACK_DATA" => [] ]
        ClearShow all
        Date ↕MethodURLData
        #12025-02-25 15:42:07GET/chapter/2207112192