A strategy combining covalent conjugation of photosensitizers to a peptide ligand directed to the melanocortin 1 (MC1) receptor with the application of sequential LED light dosage at near-IR wavelengths was developed to achieve specific cytotoxicity to melanocytes and melanoma (MEL) with minimal collateral damage to surrounding cells such as keratinocytes (KER). The specific killing of melanotic cells by targeted photodynamic therapy (PDT) described in this study holds promise as a potentially effective adjuvant therapeutic method to control benign skin hyperpigmentation or superficial melanotic malignancy such as Lentigo Maligna Melanoma (LMM).

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5691209PMC
http://dx.doi.org/10.1038/s41598-017-15142-wDOI Listing

Publication Analysis

Top Keywords

melanotic cells
8
photodynamic therapy
8
specific targeting
4
targeting melanotic
4
cells peptide
4
peptide ligated
4
ligated photosensitizers
4
photosensitizers photodynamic
4
therapy strategy
4
strategy combining
4

Similar Publications

Purpose: Melanotic neuroectodermal tumor of infancy (MNTI) is a rare, rapidly growing pigmented neoplasm originating from the neural crest. Predominantly affecting infants, it commonly occurs in the head and neck region. MNTI is often locally aggressive with a high recurrence rate.

View Article and Find Full Text PDF

Lentigo maligna (LM) often poses a diagnostic challenge due to its clinical and dermoscopic mimicry of benign lesions, leading to delayed diagnosis. Focal areas of reticular disruption have been described as one of the earliest dermoscopic signs observed. To describe a novel dermoscopic sign in LM, namely the presence of a parallel pigmented network.

View Article and Find Full Text PDF

Introduction: Melanotic schwannoma (MS) is a rare neoplasm composed of Schwann cells with melanosomes in various maturation stages. While MS is typically observed in spinal nerve roots or peripheral nerves, their involvement in intraocular structures is uncommon. Here, we present a case of spontaneous globe rupture as the presenting feature of intraocular extension of a MS.

View Article and Find Full Text PDF

Suppressing allele-specific genes using small interfering RNAs (siRNAs) can effectively whiten skin by influencing cellular gene and protein expression. Topical delivery of siRNA is a promising alternative to injections for RNA interference. However, the barrier function of the skin hinders the effective penetration of siRNA.

View Article and Find Full Text PDF

Utilizing deep learning model for assessing melanocytic density in resection margins of lentigo maligna.

Diagn Pathol

August 2024

Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Article Synopsis
  • Surgical excision is the main treatment for lentigo maligna (LM) to prevent it from turning into invasive melanoma, but evaluating the resection margins on sun-damaged skin is tough.
  • A deep learning model was created to identify melanocytes in these margins, using 353 whole slide images for training and testing, and compared its results with those of experienced dermatopathologists.
  • The AI model showed great accuracy, with an AUC of 0.84, and improved the performance of some pathologists, suggesting it could be a useful tool for assessing LM margins.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!