Cited by 363Lipid metabolism and biosynthesisTelomeres, Telomerase, and SenescenceAcne and Rosacea Treatments and Effects

Establishment and Characterization of an Immortalized Human Sebaceous Gland Cell Line (SZ95)1

Open access
Zouboulis, Christos C., Seltmann, Holger, Orfanos, Constantin E., Neitzel, Heidemarie·1999·Journal of Investigative Dermatology

Abstract

Human facial sebaceous gland cells were transfected with a PBR-322-based plasmid containing the coding region for the Simian virus-40 large T antigen. The resulting proliferating cell cultures have been passaged over 50 times to date, have been cloned, and show no signs of senescence after 4&DF;1 2 y in vitro, whereas normal human sebocytes can only be grown for three to six passages. The immortalized transfected cells, termed SZ95, expressed the Simian virus-40 large T antigen and presented an hyper-diploid-aneuploid karyotype with a modal chromosome number of 64.5. The SZ95 cell line exhibited epithelial, polymorphous characteristics with different cell sizes of up to 3.25-fold during proliferation and 6-fold at confluence, showing numerous cytoplasmic lipid droplets. The cells showed large cytoplasm profiles with abundant organelles, including vacuoles and myelin figures which indicated lipid synthesis. Lack of or only few desmosomal areas were observed. SZ95 cells expressed molecules typically associated with human sebocytes, such as keratins 7, 13, and 19, and several proteins of the polymorphous epithelial mucin family. Functional studies revealed synthesis of the sebaceous lipids squalene and wax esters as well as of triglycerides and free fatty acids, even after 25-40 passages; active lipid secretion; population doubling times of 52.4 +/- 1.6 h; reduced growth but maintenance of lipid synthesis under serum-free conditions; and retrieval of cell proliferation after addition of 5alpha-dihydrotestosterone. Retinoids significantly inhibited proliferation of certain SZ95 cell clones in the expected magnitude 13-cis-retinoic acid > all-trans-retinoic acid > > acitretin. Thus SZ95 is an immortalized human sebaceous gland cell line that shows the morphologic, phenotypic and functional characteristics of normal human sebocytes.

Integrity signals

Registry

Crossref · 10.1046/j.1523-1747.1999.00771.x

Cites

60 of 60 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • When keratinocytes were cultured in the presence of sebocyte supernatant containing all sebocyte-derived lipids, the expression of TSLP mRNA increased.

    “When keratinocytes were cultured in the presence of sebocyte supernatant, which contained all sebocyte-derived lipids65, the expression of TSLP mRNA increased.”

    From Sebaceous-immunobiology is orchestrated by sebum lipids (2017) · cites this paper as [65]

  • Testosterone and DHT promote sebocyte proliferation in vitro at concentrations above physiological levels.

    “T and DHT promoted sebocyte proliferation in vitro at concentrations higher than physiological levels [70, 199]”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Zouboulis, C. C., Seltmann, H., Orfanos, C. E., & Neitzel, H.
Affiliations
  • Freie Universität Berlin (DE)
  • Humboldt-Universität zu Berlin (DE)
Corresponding author
Zouboulis, Christos C.
Venue
Journal of Investigative Dermatology
Publisher
Elsevier BV
Published
1999-12
Volume
113
Issue
6
Pages
1011-1020
ISSN
0022-202X (ISSN-L)
OpenAlex
W2053161927
Cited by
363
References
60
Citations by year
2026: 17 · 2025: 17 · 2024: 11 · 2023: 15 · 2022: 16 · 2021: 21 · 2020: 15 · 2019: 15 · 2018: 14 · 2017: 13 · 2016: 11 · 2015: 12 · 2014: 20 · 2013: 15 · 2012: 13
FWCI
2.69
Type
journal article
Language
en
Open access
Locations
  • Journal of Investigative Dermatology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Health Sciences › Medicine › Dermatology › Acne and Rosacea Treatments and Effects
Keywords
sebocytes, immortalized cell lines, SV40 large T antigen, hyperdiploidy, aneuploidy, lipogenesis, sebaceous lipids, squalene, wax esters, triglycerides, lipid secretion, keratin, retinoids, dihydrotestosterone, cell proliferation
MeSH terms
Antigens, Polyomavirus Transforming, Cell Division, Cell Line, Chromosome Aberrations, Humans, Lipids, Phenotype, Sebaceous Glands, Simian virus 40, Transfection

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review