VDR and skin disorder: Pourmohammadi-Bejarpasi, Z. et al. [22] investigated the use of lipocalin 2 (Lcn2)-engineered MSCs and Metadichol (an inverse agonist of vitamin D receptor (VDR)) nano gel for the treatment of skin disorders such as burns, trauma, excisional and diabetic wounds, and bedsores in 2022.