Brain |
Review | Brain | | Summarize progress and challenges in applying scRNA-seq to advance the understanding of the brain | [29] |
Human | Prefrontal cortex | 10× Genomics | Identify highly cell-type specific during early Alzheimer’s disease pathophysiology | [36] |
Schwann cells | FACS | Dietary palmitic acid induces a stable prometastatic memory in human oral squamous cell carcinoma cells, tumour-associated Schwann cells and lymphatic endothelial cells displayed the highest proportional changes | [70] |
| Neural stem cells | BD Rhapsody system | Cadmium exposure led to an increase in the differentiation of neural stem cells into astrocytes while a decrease into neurons, and induced subtype-specific response and dysregulated cell-to-cell communication | [28] |
| Hippocampal | FACS | Found a layer Ⅰ interneuron expressing Pax6 and a distinct postmitotic oligodendrocyte subclass marked by Itpr2, transcription factors formed a complex, layered regulatory code across the diversity of cortical cell types | [30] |
| Gliomas | FACS | Characterize H3K27M-glioma primarily contain cells resemble oligodendrocyte precursor cells with greater proliferation and tumor-propagating | [58] |
| Lateral hypothalamic area | 10× Genomics | Define 15 distinct populations of glutamatergic neurons and 15 of GABAergic neurons, in the mouse lateral hypothalamic area | [87] |
| Prefrontal cortex | 10× Genomics | Classify unique subtypes in the prefrontal cortex, and analyze transcriptional dynamics of each cell subtype | [90] |
| Hypothalamus | Drop-seq | Define 11 distinct non-neuronal and 34 neuronal cell clusters, each with differential transcriptional effects under food deprivation | [91] |
| Microglia | 10× Genomics | Identify reconfiguration of microglial glucose metabolism, including glucose transporters, glycolysis and oxidative phosphorylation, in hippocampus of Alzheimer’s disease | [92] |
| Ganglion neurons | 10× Genomics | Vitamin E deficiency resulted in profound alterations in tyrosine-hydroxylase positive dorsal root ganglion neurons, while its supplementation improved mechanosensation | [93] |
| Microglia | 10× Genomics | Uncover at least nice transcriptionally distinct microglial states, most diverse during early development and less heterogenous in adulthood until perturbed by injury or aging | [94] |
Mice | Olfactory bulb | 10× Genomics | Investigate the subtype-specific neuronal functions, and characterizing the molecular profiles during the maturation and integration of adult-born neurons | [95] |
Sensory neuron | 10× Genomics | Reveal differences between neurons derived from different embryonic origins, and a vast diversity of vagal neuron types with previously unanticipated and proposed types | [96] |
| Microglia and myeloid cells | Smart-seq2 | Discover the heterogeneous status in early postnatal microglia, with a proliferative-region-associated subset similar to degenerative disease-associated microglia | [97] |
| Myeloid in gliomas | 10× Genomics | Demonstrate molecular heterogeneity among myeloid cells in naïve and glioma- bearing mice brains, distinct spatial distribution of identified subsets in gliomas | [98] |
| Cerebellum | 10x Genomics | Identify eight cell clusters in postnatal mouse cerebellum, revealing trajectory hierarchies of granule cells | [99] |
| Glial cells | 10× Genomics | Identify a Hippo non-responsive form of YAP may drive the Müller glial cells to a proliferative, progenitor-like state | [100] |
| Retinal neurons and glia | 10× Genomics | N-methyl-D-aspartate induced upregulation of pro-inflammatory cytokines, and genes associated with IL1β-signaling in different types of retinal neurons and glia | [101] |
| Brain | 10× Genomics | Unravel immune cell heterogeneity in the brain, and non-parenchymal macrophages were more heterogeneous | [102] |
| Brain | 10× Genomics | Major subtypes of caudal ganglionic eminence induced inhibitory interneurons were conserved after loss of intratelencephalic-type projection neurons, but with differential synaptic proteins and signaling molecules. | [103] |
| Neural stem cell | BD Rhapsody system | The agricultural herbicide paraquat exposure altered differentiation the proportions of neural stem cells, with decreased neurons and increased astrocytes, and ROS played a key role in paraquat-altered neuronal reduction | [104] |
| Cerebellum | 10× Chromium | A protocol to minimize cell damage for scRNA-seq | [105] |
| Brain myeloid cell and microglia | 10× Genomics | Genetic diversity led to variation in the abundance of microglial subtypes (disease-associated and interferon-responding microglia) with response to amyloidosis | [106] |
Drosophila | Larval brain lobes | 10× Genomics | Distinguish five major groups: neural progenitors, differentiated neurons, glia, undifferentiated neurons and non-neural cells | [107] |
Larval ventral nerve cord | 10× Genomics | Describe a set of protocols optimized for scRNA-seq analysis of the Drosophila larval ventral nerve cord, from tissue dissection and cell dissociation to cDNA library preparation, sequencing, and data analysis | [108] |
Zebrafish | Optic tecta | 10× Genomics | Notch/Delta lateral inhibition was involved in the stochastic cell-cycle entry driven by the injury- reactivated tectal radial glia | [109] |
Liver |
Review | Liver | | Discuss scRNA application in fundamental liver biology such as the metabolic zonation of hepatocytes, endothelial cells and hepatic stellate cells, and the cellular mechanisms underpinning liver regeneration | [40] |
Human | Liver tissue | 10× Genomics | Highlight a clear cell state transition from RGS5-expressing hepatic stellate cells to myofibroblast-like fibrogenic activated hepatic stellate cells that express extracellular matrix proteins and profibrotic mediators | [110] |
| Liver | FACS | Obtain the zonation profiles of all liver genes with single-molecule fluorescence in situ hybridization, with around 50% of liver genes significantly zonated | [39] |
| Hepatocytes | Drop-seq | Characterize how the transcriptomic landscape of individual hepatocytes was altered in response to high-fat diet and nutritional overload in NAFLD | [41] |
| Hepa1-6 cell | 10× Genomics | Investigated the effects of lenvatinib (a multiple receptor tyrosine kinase inhibitor) alone and in combination with anti-PD-1 on the immune cell populations in tumors | [111]a |
| Myeloid cells in liver and bone marrow | FACS; 10x Genomics | Assess the heterogeneity of myeloid cells in the liver and bone marrow during NAFLD, with upregulation of monocyte-derived populations, and downregulation of inflammatory calprotectin in macrophage and dendritic cell subsets | [112] |
Mice | Biliary epithelial cells | 10× Genomics | Indicate the absence of WNT/b-catenin signaling, whereas the activation of YAP signaling in biliary epithelial cells during the ductular reaction to support liver regeneration following injury | [113] |
Hepatocytes and non-parenchymal cells | 10× Genomics | Reveal the gene expression landscape of hepatocytes and non-parenchymal cells in healthy, NASH and NAFLD livers, with Kupffer cells acting immune responses and monocyte-derived macrophages capable of differentiation | [114] |
| Non-parenchymal cells from livers | 10× Genomics | Uncover the emergence of NASH-associated macrophages with high expression of triggering receptors expressed on myeloid cells 2, highly responsive to dietary interventions | [115] |
| Hepatic stellate and fibroblasts | 10× Genomics | Provide a transcriptional roadmap during liver fibrosis for the activation of hepatic stellate cells with the sequential activation of inflammatory, migrative, and extracellular matrix– producing programs | [116] |
Kidney |
Human | Kidney cells | Smart-seq2 | Reveal 21 subsets of leukocytes active in lupus nephritis, including myeloid cells, T cells, natural killer cells and B cells with both pro-inflammatory responses and inflammation-resolving responses | [117] |
Mice | Kidney cells | 10× Genomics | The protective effect of Lactobacillus casei Zhang is dependent on immune-regulatory macrophages and renal tubular epithelial cells | [45] |
Rat | Kidney cells | | Reveal the heterogeneity of kidney cells in response to ochratoxin A acute toxicity, with the tubule epithelial cells as main target types | [118] |
Intestine |
Human | Epithelial cells from the colon | 10× Genomics SMART-Seq2 | Reveal 51 epithelial, stromal, and immune cell subsets, confirm that inflammatory fibroblasts, inflammatory monocytes, microfold-like cells, and T cells expand with disease, and the expression of an inflammation-associated gene set increased from healthy to non-inflamed to inflamed patients | [54] |
Epithelial cells from the colon | 10× Genomics Smart-seq2 | Identify previously unknown cellular subtypes gradients of progenitor cells, colonocytes and goblet cells, and absorptive cell expressing the proton channel OTOP2 and the satiety peptide uroguanylin | [119] |
| Crypt cells from small intestinal | 10× Genomics | Suggest that an obesogenic western-style high-fat/high-sugar diet boosts formation of the absorptive and goblet cell lineage and promotes proximal cell identities | [120] |
Mice | Crypt cells from intestinal | 10× Genomics | Indicate that 3-hydroxy-3-methylglutaryl- CoA synthetase 2, the gene encoding the rate-limiting enzyme in the production of ketone bodies, loss compromises stemness and skews their differentiation toward the secretory lineage with the progressive loss of ISCs and the shift toward Paneth and goblet cell differentiation | [121] |
Crypt cells from the small intestine and the colon | Drop-seq | Investigate the necessity of peroxisome proliferator-activated receptor and the downstream fatty acid oxidation metabolic program as drivers of intestinal stem cell adaptation to a high fat diet for the genesis and progression of early intestinal adenomas | [122] |
Zebrafish | Epithelial cells | 10× Genomics | Identify seven cell populations, including lymphocytes (B cells and T cells), phagocytes (macrophages and neutrophils), enterocytes, and secretory cells (goblet cells and enteroendocrine cells), and co-exposure of polystyrene nanoplastics and lead induced lower differentially expressed genes in most cell populations, except for goblet cells | [123] |
Immune |
Review | Immune cell | | Summarize how scRNA-seq can be used to deconvolve immune system heterogeneity by identifying novel distinct immune cell subsets in health and disease, characterizing stochastic heterogeneity within a cell population and building developmental ‘trajectories’ for immune cells | [53] |
| Immune cells from bronchoalveolar | 10× Genomics | Proinflammatory monocyte-derived macrophages and the presence of highly clonally CD8+ T cells were abundant from severe COVID-9 patients, suggesting the potentially underlying pathogenesis mechanisms | [55] |
| Peripheral blood cells | 10× Genomics | Reveal cell-type specific immune responses associated not only with ex vivo infection phenotype but also with clinical disease stage | [124] |
Human | Lymphoid cells from tonsil/intestine | 10× Genomics | Identify an intermediate ILC3-ILC1 cluster in the tonsils and in the lamina propria of the ileum since ILC3s acquired transcription factors and cytokines of ILC1- like cells | [125] |
Innate T cells from lymphocytes | 10× Genomics | Reveals four broad states of innateness and heterogeneity, while innateness is characterized by pre-formed mRNA encoding effector functions, but impaired proliferation with decreased expression of ribosomal genes | [126] |
| T lymphocytes from peripheral blood | 10× Genomics | Unveil the shared and the distinct cytotoxic hallmarks of T cell receptors (TCRVδ and TCRVδ2) human γδ T lymphocytes | [127] |
| Endothelial cells from lymph nodes | 10× Genomics | Identify six types of lymphatic endothelial cells including subcapsular and medullary sinuses, and CD209 on medullary sinuses mediates neutrophil adhesion | [128] |
| CD4 T cells from spleen | 10× Genomics | Indicate the landscape of CD4 T cell subsets differs markedly, exhausted, cytotoxic, and activated regulatory T cells — in young mice but gradually accumulate with age | [51] |
| Stromal cells from bone marrow | 10× Genomics | Peri-sinusoidal stromal cells were found to co-express with identified reporter genes in bone marrow stromal cell, involving in the development of hematopoietic subsets | [129] |
| Synovial cells from ankle and wrist joint | 10× Genomics | Identify two distinct fibroblast subsets: FAPα+ THY1+ immune effector fibroblasts located in the synovial sub-lining, and FAPα+ THY1- destructive fibroblasts restricted to the synovial lining layer | [130] |
| Macrophages from joints | 10× Genomics | Identify dynamic epithelial-like structures with CX3CR1+ tissue-resident macrophages, restricting the inflammatory reaction under a tight-junction-mediated shield | [131] |
| Lymphoid cells from lung/adipose | 10× Genomics | Confirm adventitial stromal cells as a fibroblast-like subset enriched for pathways involved in extracellular matrix remodeling, immune sensing and regulation | [132] |
| CD4+ from lymph nodes and spleen | 10× Chromium | Identify a T follicular helper cell subset which drives anaphylactic immunoglobulin E, with an unusual cytokine profile and co-express the transcription factors | [133] |
Mice | Lymphoid cells from bone marrow | 10× Genomics | Identify two successive stages of innate lymphoid cells development-specified and committed early innate lymphoid progenitors, and the former can generate dendritic cells, whereas the later was greatly decreased | [134] |
Regulatory T cells from thymus | 10× Genomics | Interleukin-2 production by self-reactive CD4 thymocytes scales regulatory T cell generation in the thymus | [135] |
| CD45+ cells from B16 tumors | 10× Genomics | Treg cells shaped the transcriptional landscape across multiple tumor-infiltrating immune cell types, promote the SREBP1-dependent metabolic fitness of tumor-promoting macrophages via repression of CD8+ T cell-derived interferon-γ | [136] |
| Stromal and immune cells from the mammary gland | 10× Genomics | HFD-induced obesity establishes a tumorigenic microenvironment to promote breast cancer development through the upregulation of extracellular matrix and the downregulation of immunoregulatory ecosystem | [137] |
| Innate lymphoid cells from lung lymphocytes | 10× Genomics | Multiple subsets of innate and adaptive lymphocytes emerged with different kinetics, and calcitonin gene related peptide as a context-dependent negative regulatory factor limits group 2 innate lymphoid cell responses and constrains type 2 inflammation | [138] |
| Macrophages from colon and bone marrow | 10× Genomics | Identify butyrate-induced antimicrobial peptides, associated with a shift in macrophage metabolism through histone deacetylase 3 inhibition | [139] |
| CD8+ T cells during virus infections | 10× Genomics | Long-term CD8+ T cell immunity to chronic viral infection requires unique transcriptional and epigenetic programs associated with the transcription factor TOX. | [140] |
| Stroma cells from bone marrow | 10x Genomics | Identify seventeen stromal subsets expressing distinct hematopoietic regulatory genes spanning new fibroblastic and osteoblastic subpopulations including distinct osteoblast differentiation trajectories | [141] |
Rat | Cells from adipose, aorta, kidney, liver, skin, bone marrow | 10× Genomics | Caloric restriction reprograms the single-cell transcriptional landscape of norvegicus aging, alleviating aging-related accumulation of pro-inflammatory cells and attenuating aging-associated cell-type-specific gene expression changes | [142] |
Tumor |
| Pancreatic tissue | ddSEQ System | Reveal epithelial and stromal heterogeneous alterations within the tumor microenvironment during the progression of cancer, progressively depletion of cytotoxic T cells, activated T-helper cells, and dendritic cells | [57] |
| Glioblastoma cells from brain | SMART-Seq2 10× Genomics | Find that malignant cells in glioblastoma exist in a limited set of cellular states that recapitulate neural progenitor, oligodendrocyte progenitor, astrocyte and mesenchymal like states, and the relative frequency of each state varies between tumors | [143] |
Human | Mononuclear tumor cells from one marrow cells | 10× Genomics | Identified mantle cell lymphoma subpopulations comprising malignant B cell subtypes, T cell subtypes, dendritic cell subtypes and natural killer cell subtypes, with different cell markers, including genes associated with immune escape and drug resistance | [144] |
| Mononuclear cells from marrow | 10× Genomics | Reveal abnormalities of alternative polyadenylation dynamics in acute myeloid leukaemia and lower alternative polyadenylation diversity between eight cell types with regulation in leukemia development and erythropoiesis | [145] |
| Epithelial cells from gastric mucosa | 10× Genomics | Construct a network for gastric epithelial cells across different lesions, with two conserved gastric mucous-secreting cells and enteroendocrine cells, and two subsets reflecting distinct cell states within goblet cells | [146] |
| Tumor cells from oocyte/lymphocyte | Smart-Seq | Identify distinct gene expression patterns, including candidate biomarkers for melanoma circulating tumor cells | [77] |
Human/ mice | CD8+ lymphocytes | SMART-Seq2 | Examinate of the dynamics of the development of the effector CD8+ T cell response in the TME in the context of immunotherapy suggests a central role for PD-1−CD8+ TILs | [147] |
Cancer cell from Pancreas | 10× Genomics | Demonstrate the presence of tumor microenvironment-associated genes, IL10Rβ, IL34 and CSF1R, in epithelial tumor cells, suggesting IL10Rβ and CSF1R may be ligand-dependent and the impact of ligand and receptor inhibition mirrored each other | [148] |
| Tumor cells from cerebellum | 10× Genomics | Highlight different molecular subgroups of childhood cerebellar tumors mirror the transcription of cells from distinct, temporally restricted cerebellar lineages | [149] |
| CD45+ cells from intratumor | 10× Genomics | Interferon signaling in cancer cells and immune cells oppose each other to establish a regulatory relationship that limits both adaptive and innate immune killing | [150] |
| CD45+ cells from tumor | 10× Genomics | Uncover the topography and molecular profiles, with more abundant arginase 1+ macrophages in tumors and two morphologically distinct subsets of tumor-associated macrophages | [151] |
| Lung progenitor cells | 10× Genomics | Demonstrate NOTCH signaling inhibition induces lung progenitor cells to form pulmonary neuroendocrine cells, and that subsequent interference with the P53 suppressor gene allows early-stage small cell lung cancers | [152] |
| Tumor-associated mononuclear phagocytes | 10× Genomics | Reveal a unique subset with Fcmr-dependent heterogeneity, with Fcmr activity negatively regulating the activation and migratory capacity of myeloid cells, and T cell activation by bone marrow-derived dendritic cells | [153] |
| Bone marrow cells | 10× Genomics | Define a previously unrecognized B1-box oligomerization in promyelocyticleukemia, but also highlight oligomerization as an important factor in carcinogenesis. | [154] |
| Kelly cell | 10× Genomics | Identify a previously unrecognized role of brother of the regulator of imprinted sites, to promote regulatory chromatin interactions that support specific cancer phenotypes | [155] |
| Tumor infiltration lymphocyte | 10× Genomics | Demonstrate high-throughput in vivo genetic screens for immunotherapy target discovery and establish DHX37 as a functional regulator of CD8 T cells | [156] |
Mice | Stromal and tumor cells | 10× Genomics | Reveal discriminating chromatin features, either permissive or repressive for transcription, and characterize tumor heterogeneity at the level of chromatin features | [157] |
| Medulloblastoma | 10× Chromium | Investigate heterogeneity in four consensus molecular subgroups (WNT, SHH, Group 3 and 4), while Group 3 tumours exhibit subgroup-specific cellular trajectories with malignant undifferentiated and differentiated neuronal-like populations, whereas Group 4 tumours recapitulate more differentiated populations of known lineage | [158] |
| Cancer cell line models | 10× Genomics | Reveal significant heterogeneity that interferons stimulated genes-high population (cluster 7) enriched for cells expressing type Ⅰ and Ⅲ IFN transcripts, supporting that chronic interferons may be derived from cancer cells | [159] |
| Leukaemic blasts from bone marrow | 10× Genomics | Reveal transcriptional plasticity driven stable epigenetic resistance between drug naïve and resistant acute myeloid leukaemia samples | [160] |
| Tumor cells from endothelial | 10× Genomics | Find subtypes of endothelial cells in tumors, and fresh endothelial cell isolating from lung and mammary tumor models had differential abilities to degrade fibrin and launch new vessel sprouts | [161] |
| Tumor cells from breast | 10× Genomics | Tumor resection had a major impact on reducing clonal diversity in secondary sites, indicating that most disseminated tumor cells lacked the capacity to ‘seed’, hence originated from ‘shedders’ that did not persist. | [162] |
| Tumor cells from inguinal tissue | 10× Genomics | Identify responsive tumors were characterized by inflammatory gene expression consistent with upregulation of STAT1 and TLR3, and down-regulation of IL-10, and more infiltrating activated natural killer cells | [163] |
Others |
Mice | Pancreatic β cells | Smart-seq2 | Identify sex-dependent T2D altered genes and sexual dimorphism in T2D pathogenicity, suggesting sex-based differences in the pathological mechanisms of T2D | [164] |