Expression of Cathepsins B, D, and G in Microcystic Lymphatic Malformation

Background: This study investigated the expression and localization of cathepsins B, D, and G in relationship to the embryonic stem cell (ESC)-like population we have previously identified in microcystic lymphatic malformation (mLM). Methods and Results: Immunohistochemical staining demonstrated expression of cathepsins B, D, and G in cervicofacial mLM tissue samples from 11 patients. Immunofluorescence staining of two representative mLM samples showed localization of cathepsins B and D to the OCT4+ and the c-MYC+ cells on the endothelium of lesional vessels and the stroma, while cathepsin G was localized to the OCT4+/tryptase+ cells within the stroma. Transcript expression of cathepsins B, D, and G was confirmed using reverse transcription quantitative polymerase chain reaction (RT-qPCR; n = 5). Western blotting (n = 3) performed on the mLM tissue samples revealed protein expression of cathepsins B and D, which were demonstrated to be enzymatically active using enzymatic activity assays. Conclusion: This study demonstrated expression of cathepsins B and D by the ESC-like cells on the endothelium of lesional vessels and the stroma, while cathepsin G was localized to the OCT4+ phenotypic mast cells within the stroma of mLM.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:19

Enthalten in:

Lymphatic research and biology - 19(2021), 4 vom: 13. Aug., Seite 347-354

Sprache:

Englisch

Beteiligte Personen:

Mehrotra, Shreeja [VerfasserIn]
van Schaijik, Bede [VerfasserIn]
Boyes, Kendra [VerfasserIn]
Bockett, Nicholas [VerfasserIn]
Brasch, Helen D [VerfasserIn]
Davis, Paul F [VerfasserIn]
Itinteang, Tinte [VerfasserIn]
Tan, Swee T [VerfasserIn]

Links:

Volltext

Themen:

CTSB protein, human
CTSD protein, human
CTSG protein, human
Cathepsin B
Cathepsin D
Cathepsin G
EC 3.4.21.20
EC 3.4.22.1
EC 3.4.23.5
Embryonic stem cells
Journal Article
Lymphatic malformation
Microcystic
Renin–angiotensin system

Anmerkungen:

Date Completed 17.09.2021

Date Revised 31.05.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1089/lrb.2020.0047

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM31902850X