PMID- 37025908 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230411 IS - 2405-8440 (Print) IS - 2405-8440 (Electronic) IS - 2405-8440 (Linking) VI - 9 IP - 4 DP - 2023 Apr TI - Phenotypic plasticity promotes lymph nodes metastasis and drug resistance in lung squamous cell carcinomas. PG - e14614 LID - 10.1016/j.heliyon.2023.e14614 [doi] LID - e14614 AB - BACKGROUND: Phenotypic plasticity (PP) is a major promoter of tumor metastasis and drug resistance. Nevertheless, the molecular features and clinical significance of phenotypic plasticity in lung squamous cell carcinomas (LSCC) remained largely unexplored. METHODS: Phenotypic plasticity-related genes (PPRG) and clinical information of LSCC were downloaded from the cancer genome atlas (TCGA). The expression profiles of PPRG were compared between patients with and without lymph node metastasis. The prognostic signature was constructed, and survival analysis was performed based on phenotypic plasticity. Immunotherapy responses, chemotherapeutic drugs and targeted drug responses were investigated. In addition, the results were verified in an external cohort. RESULTS: Patients with and without lymph node metastasis exhibited significantly different genomic characteristics of phenotypic plasticity. Enrichment analysis showed that PP was strongly associated with cell responses and cell contraction. Survival analysis demonstrated that PPRG could serve as independent prognostic factor for overall survival. The phenotypic plasticity-related signature successfully divided patients into high- and low-PP score groups. Patients with low-PP scores were more sensitive to PD-L1, Cisplatin, Gefitinib, Obatoclax. Mesylate, Paclitaxel, Sorafenib and Vinorelbine (all p < 0.05). While, patients with low-PP scores were more sensitive to Axitinib and Camptothecin (all p < 0.05). Consistent with the results from TCGA, the external cohort validated the above findings. CONCLUSIONS: Our study revealed that phenotypic plasticity may be involved in the lymph node metastasis in LSCC through regulating cell responses and cell contraction. Evaluation of phenotypic plasticity will assist clinicians in making treatment strategies. CI - (c)2023PublishedbyElsevierLtd. FAU - Wang, Feng AU - Wang F AD - Department of Radiotherapy, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, No. 1878, Sichuan North Road, Shanghai, 200081, China. FAU - Zhu, Lei AU - Zhu L AD - Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, 507 Zhengmin Road, Shanghai, 200433, China. LA - eng PT - Journal Article DEP - 20230317 PL - England TA - Heliyon JT - Heliyon JID - 101672560 PMC - PMC10070384 OTO - NOTNLM OT - Drug responses OT - Lung squamous cell carcinomas OT - Lymph node metastasis OT - Phenotypic plasticity OT - Prognosis COIS- The authors declare no conflict of interest. EDAT- 2023/04/08 06:00 MHDA- 2023/04/08 06:01 PMCR- 2023/03/17 CRDT- 2023/04/07 02:35 PHST- 2022/11/18 00:00 [received] PHST- 2023/03/11 00:00 [revised] PHST- 2023/03/13 00:00 [accepted] PHST- 2023/04/08 06:01 [medline] PHST- 2023/04/07 02:35 [entrez] PHST- 2023/04/08 06:00 [pubmed] PHST- 2023/03/17 00:00 [pmc-release] AID - S2405-8440(23)01821-2 [pii] AID - e14614 [pii] AID - 10.1016/j.heliyon.2023.e14614 [doi] PST - epublish SO - Heliyon. 2023 Mar 17;9(4):e14614. doi: 10.1016/j.heliyon.2023.e14614. eCollection 2023 Apr.