Molecular insight into the interplay among heterogeneous plasmacytes and microenvironment cells and their clinical relevance in myeloma
Abstract
Multiple myeloma (MM) develops with the acquisition of genetic abnormalities in plasmacytes and changes in microenvironment cells (MECs). Despite the progress in understanding MM disease mechanism through omics studies, the genomic/transcriptomic profiling remains limited in Chinese MM patients. Here, we collected 277 newly diagnosed MM (NDMM) patients in the Shanghai MM Omics (SMMO) project. Analysis of 267 cases with whole-genome/whole-exome sequencing and RNA sequencing (RNA-seq) identified three genetic groups (MY, HRD, and MS/CD). Using single-cell RNA sequencing (scRNA-seq), we investigated 59 NDMM subjects from SMMO, 20 relapsed cases from public database and 30 normal controls. Eight subpopulations of plasmacytes from NDMM (mSP1–mSP8) were defined, each showing unique signatures while forming a differentiation trajectory. The mSP2 is worth noting due to its high proliferative property. Regarding MECs, we found T cell subsets including T-helpers, Tregs, and cytotoxic T cells all in dysfunctional status and increased myeloid-derived suppressor cells such as macrophages mainly in M2 polarization, both constituting a milieu in favor of MM cell growth and immune escape. Furthermore, we scrutinized the crosstalk between MM cells and MECs and that among distinct MECs. A dynamic, comprehensive MM pathogenesis network was revealed, with a number of ligand–receptor pairs. Importantly, the mSP2 signature can be projected to the MM cell RNA-seq data of 235 patients to generate a Score100 with prognostic value in SMMO. Via multivariate analysis of the International Staging System, Consensus Genomic Staging, and Score100, we propose a practical MM stratification model for evaluating aggressive myeloma.
Article Details
Journal Info
Proceedings of the National Academy of Sciences
National Academy of Sciences
Authors (22)
Lu Jiang
School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics, and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
Cheng-Lin Liu
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Yu-Liang Zhang
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Niu Qiao
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Centre for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine
Jian-Feng Li
Xiamen University , , ,
Shuang-Shuang Yang
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Xiao-Zhong Shen
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Meng-Ping Chen
Department of Hematology, Renji Hospital, Shanghai Jiao Tong University School of Medicine
Sheng-Yue Wang
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Centre for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine
Ting Wu
Children’s Hospital, Zhejiang University School of Medicine
Bing Chen
Shu-Ting Yu
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Fang-Ying Jiang
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Shuai Wang
Yuan-Fang Liu
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Centre for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine
Yan Wang
Yi Tao
Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, China.
Zhu Chen
Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Department of Cardiology, Zhongnan Hospital
Jian-Qing Mi
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Centre for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine
Jian Hou
Jie Xu
Sai-Juan Chen
Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Centre for Translational Medicine at Shanghai, Research Unit of Hematologic Malignancies Genomics and Translational Research of Chinese Academy of Medical Sciences, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine