Evidence for a local renin angiotensin system in primary cultured human preadipocytes.
OBJECTIVE
To investigate whether human preadipocytes possess a complete functional renin angiotensin system.


METHODS
Gene expression of angiotensinogen, renin, renin binding protein, angiotensin converting enzyme (ACE) and angiotensin II (ang II) receptor type 1 in human preadipocytes; ACE protein and ang II production of human adipose tissue stromal cells differentiated or not in primary culture.


RESULTS
All genes mentioned above were found to be expressed in human preadipocytes. ACE was translated into protein as detected by western blot. Ang II was secreted both by undifferentiated preadipocytes and immature adipocytes, and its production was significantly elevated in differentiated cells.


CONCLUSIONS
Preadipocytes from human adipose tissue express a functional renin angiotensin system (RAS).
Schling
P
P
Institut für Biochemie, Genetik und Mikrobiologie, Universität Regensburg, Germany.
Mallow
H
H
Trindl
A
A
Löffler
G
G
D017667:Adipocytes / Q000502:physiology*; D000328:Adult; D000804:Angiotensin II / Q000378:metabolism; D000808:Angiotensinogen / Q000235:genetics; D015153:Blotting, Western; D002238:Carbohydrate Epimerases; D002352:Carrier Proteins / Q000235:genetics; D002478:Cells, Cultured; D004792:Enzyme Precursors / Q000378:metabolism; D005260:Female; D015870:Gene Expression; D006801:Humans; D008297:Male; D007703:Peptidyl-Dipeptidase A / Q000235:genetics; D011945:Receptors, Angiotensin / Q000235:genetics; D012083:Renin / Q000235:genetics / Q000378:metabolism; D012084:Renin-Angiotensin System / Q000502:physiology*
D002352:Carrier Proteins; D004792:Enzyme Precursors; D011945:Receptors, Angiotensin; D000808:Angiotensinogen; D000804:Angiotensin II; D007703:Peptidyl-Dipeptidase A; D012083:Renin; D002238:Carbohydrate Epimerases; C024519:N-acyl-D-glucosamine 2-epimerase; C498259:RENBP protein, human