PMID- 34583709 OWN - NLM STAT- MEDLINE DCOM- 20220224 LR - 20220224 IS - 1476-4598 (Electronic) IS - 1476-4598 (Linking) VI - 20 IP - 1 DP - 2021 Sep 28 TI - Single-cell RNA sequencing reveals markers of disease progression in primary cutaneous T-cell lymphoma. PG - 124 LID - 10.1186/s12943-021-01419-2 [doi] LID - 124 AB - BACKGROUND: In early-stage mycosis fungoides (MF), the most common primary cutaneous T-cell lymphoma, limited skin involvement with patches and plaques is associated with a favorable prognosis. Nevertheless, approximately 20-30% of cases progress to tumors or erythroderma, resulting in poor outcome. At present, factors contributing to this switch from indolent to aggressive disease are only insufficiently understood. METHODS: In patients with advanced-stage MF, we compared patches with longstanding history to newly developed plaques and tumors by using single-cell RNA sequencing, and compared results with early-stage MF as well as nonlesional MF and healthy control skin. RESULTS: Despite considerable inter-individual variability, lesion progression was uniformly associated with downregulation of the tissue residency markers CXCR4 and CD69, the heat shock protein HSPA1A, the tumor suppressors and immunoregulatory mediators ZFP36 and TXNIP, and the interleukin 7 receptor (IL7R) within the malignant clone, but not in benign T cells. This phenomenon was not only found in conventional TCR-alphabeta MF, but also in a case of TCR-gammadelta MF, suggesting a common mechanism across MF subtypes. Conversely, malignant cells in clinically unaffected skin from MF patients showed upregulation of these markers. CONCLUSIONS: Our data reveal a specific panel of biomarkers that might be used for monitoring MF disease progression. Altered expression of these genes may underlie the switch in clinical phenotype observed in advanced-stage MF. CI - (c) 2021. The Author(s). FAU - Rindler, Katharina AU - Rindler K AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Jonak, Constanze AU - Jonak C AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Alkon, Natalia AU - Alkon N AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Thaler, Felix M AU - Thaler FM AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Kurz, Harald AU - Kurz H AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Shaw, Lisa E AU - Shaw LE AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Stingl, Georg AU - Stingl G AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Weninger, Wolfgang AU - Weninger W AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Halbritter, Florian AU - Halbritter F AD - St. Anna Children's Cancer Research Institute (CCRI), Zimmermannplatz 10, 1090, Vienna, Austria. FAU - Bauer, Wolfgang M AU - Bauer WM AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Farlik, Matthias AU - Farlik M AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. FAU - Brunner, Patrick M AU - Brunner PM AUID- ORCID: 0000-0002-3488-3345 AD - Department of Dermatology, Medical University of Vienna, Wahringer Gurtel 18-20, 1090, Vienna, Austria. patrick.brunner@meduniwien.ac.at. LA - eng GR - KLI 849-B/Austrian Science Fund/ PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210928 PL - England TA - Mol Cancer JT - Molecular cancer JID - 101147698 RN - 0 (Biomarkers) SB - IM MH - Adult MH - Aged MH - *Biomarkers MH - Biopsy MH - Computational Biology/methods MH - Disease Progression MH - Female MH - *Gene Expression Regulation, Neoplastic MH - Humans MH - Immunohistochemistry MH - Lymphoma, T-Cell, Cutaneous/*genetics/*pathology MH - Male MH - Middle Aged MH - Mycosis Fungoides/genetics/pathology MH - Phenotype MH - *RNA-Seq MH - Sequence Analysis, RNA MH - *Single-Cell Analysis/methods PMC - PMC8477535 OTO - NOTNLM OT - Advanced-stage MF OT - Cutaneous lymphoma OT - Early-stage MF OT - Gamma-delta lymphoma OT - Mycosis fungoides OT - Nonlesional MF OT - Single-cell RNA sequencing COIS- CJ is an employee of the Medical University of Vienna, and has received personal fees from LEO Pharma, Pfizer, Recordati Rare Diseases, Eli Lilly and Company, Novartis, Takeda, Mallinckrodt/Therakos, AbbVie, Janssen, Sandoz, Kyowa Kirin and Almirall independently from this work. CJ is an investigator for Eli Lilly and Company, LEO Pharma, Novartis, and 4SC (grant paid to her institution). GS received personal fees from Boehringer Ingelheim, Sanofi-Genzyme, Almirall, and Novartis. WW is an employee of the Medical University of Vienna and has received personal fees from LEO Pharma, Pfizer, Sanofi Genzyme, Eli Lilly, Novartis, Boehringer Ingelheim, AbbVie, and Janssen. WMB is an employee of the Medical University of Vienna and has received personal fees from Takeda, Abbvie, GSK/ViiV and Gilead. PMB is an employee of the Medical University of Vienna, and has received personal fees from LEO Pharma, Pfizer, Sanofi Genzyme, Eli Lilly, Novartis, Celgene, UCB Pharma, Biotest, Boehringer Ingelheim, AbbVie, Amgen, Arena Pharmaceuticals, GSK and Regeneron independently from this work. PMB is an investigator for Novartis (grant paid to his institution). The rest of the authors declare that they have no relevant conflicts of interest. EDAT- 2021/09/30 06:00 MHDA- 2022/02/25 06:00 PMCR- 2021/09/28 CRDT- 2021/09/29 05:39 PHST- 2021/05/26 00:00 [received] PHST- 2021/08/28 00:00 [accepted] PHST- 2021/09/29 05:39 [entrez] PHST- 2021/09/30 06:00 [pubmed] PHST- 2022/02/25 06:00 [medline] PHST- 2021/09/28 00:00 [pmc-release] AID - 10.1186/s12943-021-01419-2 [pii] AID - 1419 [pii] AID - 10.1186/s12943-021-01419-2 [doi] PST - epublish SO - Mol Cancer. 2021 Sep 28;20(1):124. doi: 10.1186/s12943-021-01419-2.