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SKIN Publication-derived

Diabetic Wound Skin Organoids

Source Zhixin et al., 2025 · Guangdong Medical University, The First Clinical Medical College · 10.3760/cma.j.cn501225

Authors: Liu Zhixin, Qiu Kaizhen, He Jia, Wang Jingru, Liu Bilai, Xin Qi, Li Guiqiang, Chen Xiaodong Duration: 92 days 8 phases Cell source: Human iPSC

Abstract

This protocol describes the generation of human iPSC-derived skin organoids and preparation of their conditioned culture medium (SO-CM) to evaluate effects on high glucose-induced dermal fibroblasts. The study demonstrates that SO-CM promotes proliferation and migration of fibroblasts while modulating inflammatory and growth factor expression, providing a therapeutic strategy for diabetic wound healing.

Cell source
Human iPSC
Application
Disease modeling

Protocol overview

26 steps across 8 phases

Phase 1 · Human iPSC differentiation into skin organoids Days 0-92
  1. a iPSC dissociation and aggregate formation
  2. b First differentiation phase with Essential 6 medium
  3. c Second differentiation phase with LDN193189
  4. d Nutrient supplementation phase
  5. e Transfer to skin organoid culture medium (SOM) with Matrigel
  6. f Maturation phase without Matrigel
Phase 2 · Preparation of conditioned media (Fb-CM and SO-CM) Days 1-3
  1. a Culture human fibroblasts to passage 5-6
  2. b Seed fibroblasts in SOM for conditioned medium preparation
  3. c Seed skin organoids in SOM for conditioned medium preparation
  4. d Collect culture supernatant (Fb-CM and SO-CM)
Phase 3 · Cytokine analysis (ELISA) Day 1
  1. a ELISA detection of cytokines in SOM, Fb-CM, and SO-CM
Phase 4 · High glucose fibroblast induction and cell culture experiments Days 1-10 (induction) + experiment days
  1. a Induce fibroblasts with high glucose
  2. b Seed high glucose-induced fibroblasts for proliferation assay
  3. c Randomize groups and treat with conditioned media (proliferation)
  4. d Seed high glucose-induced fibroblasts for migration assay
  5. e Perform cell scratch assay
  6. f Measure cell migration at 13 hours post-scratch
Phase 5 · Ki67 immunofluorescence staining (24 h culture) After 24 h treatment
  1. a Perform immunofluorescence staining for Ki67
  2. b Microscopic observation and Ki67 quantification
Phase 6 · Cell viability assay (CCK-8, 24 h culture) After 24 h treatment
  1. a Measure cell absorbance using CCK-8 kit
Phase 7 · Reactive oxygen species (ROS) detection (48 h culture) After 48 h treatment
  1. a Seed and treat high glucose-induced fibroblasts for ROS assay
  2. b ROS detection with fluorescent probe
  3. c Microscopic observation and ROS quantification
Phase 8 · Senescence detection using β-galactosidase staining (48 h culture) After 48 h treatment
  1. a Seed and treat high glucose-induced fibroblasts for senescence assay
  2. b β-galactosidase staining
  3. c Microscopic observation and senescence quantification

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Attribution

This SOP was written by Organthis based on the published method in Zhixin et al., 2025. Once the originating laboratory has confirmed it, the SOP is marked Verified.

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