1
|
Kim J, Rothová MM, Madan E, Rhee S, Weng G, Palma AM, Liao L, David E, Amit I, Hajkarim MC, Vudatha V, Gutiérrez-García A, Moreno E, Winn R, Trevino J, Fisher PB, Brickman JM, Gogna R, Won KJ. Neighbor-specific gene expression revealed from physically interacting cells during mouse embryonic development. Proc Natl Acad Sci U S A 2023; 120:e2205371120. [PMID: 36595695 PMCID: PMC9926237 DOI: 10.1073/pnas.2205371120] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 11/16/2022] [Indexed: 01/05/2023] Open
Abstract
Development of multicellular organisms is orchestrated by persistent cell-cell communication between neighboring partners. Direct interaction between different cell types can induce molecular signals that dictate lineage specification and cell fate decisions. Current single-cell RNA-seq technology cannot adequately analyze cell-cell contact-dependent gene expression, mainly due to the loss of spatial information. To overcome this obstacle and resolve cell-cell contact-specific gene expression during embryogenesis, we performed RNA sequencing of physically interacting cells (PIC-seq) and assessed them alongside similar single-cell transcriptomes derived from developing mouse embryos between embryonic day (E) 7.5 and E9.5. Analysis of the PIC-seq data identified gene expression signatures that were dependent on the presence of specific neighboring cell types. Our computational predictions, validated experimentally, demonstrated that neural progenitor (NP) cells upregulate Lhx5 and Nkx2-1 genes, when exclusively interacting with definitive endoderm (DE) cells. Moreover, there was a reciprocal impact on the transcriptome of DE cells, as they tend to upregulate Rax and Gsc when in contact with NP cells. Using individual cell transcriptome data, we formulated a means of computationally predicting the impact of one cell type on the transcriptome of its neighboring cell types. We have further developed a distinctive spatial-t-distributed stochastic neighboring embedding to display the pseudospatial distribution of cells in a 2-dimensional space. In summary, we describe an innovative approach to study contact-specific gene regulation during embryogenesis.
Collapse
Affiliation(s)
- Junil Kim
- Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen N2200, Denmark
- School of Systems Biomedical Science, Soongsil University, Dongjak-Gu, Seoul06978, Republic of Korea
| | - Michaela Mrugala Rothová
- Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), University of Copenhagen, Copenhagen2200, Denmark
| | - Esha Madan
- Champalimaud Centre for the Unknown, Lisbon1400-038, Portugal
| | - Siyeon Rhee
- Department of Biology, Stanford University, Stanford, CA94305
| | - Guangzheng Weng
- Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen N2200, Denmark
| | | | - Linbu Liao
- Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen N2200, Denmark
| | - Eyal David
- Department of Immunology, Weizmann Institute of Science, Rehovot7610001, Israel
| | - Ido Amit
- Department of Immunology, Weizmann Institute of Science, Rehovot7610001, Israel
| | | | - Vignesh Vudatha
- Department of Surgery, Virginia Commonwealth University, Richmond, VA23298-0033
| | | | - Eduardo Moreno
- Champalimaud Centre for the Unknown, Lisbon1400-038, Portugal
| | - Robert Winn
- School of Medicine, Virginia Commonwealth University Massey Cancer Center, Virginia Commonwealth University, Richmond, VA23298-0033
| | - Jose Trevino
- Department of Surgery, Virginia Commonwealth University, Richmond, VA23298-0033
| | - Paul B. Fisher
- School of Medicine, Virginia Commonwealth University Massey Cancer Center, Virginia Commonwealth University, Richmond, VA23298-0033
- Department of Human and Molecular Genetics, School of Medicine, Virginia Commonwealth University, Richmond, VA23298-0033
- School of Medicine, VCU Institute of Molecular Medicine, Virginia Commonwealth University, Richmond, VA23298-0033
| | - Joshua M. Brickman
- Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), University of Copenhagen, Copenhagen2200, Denmark
| | - Rajan Gogna
- School of Medicine, Virginia Commonwealth University Massey Cancer Center, Virginia Commonwealth University, Richmond, VA23298-0033
- Department of Human and Molecular Genetics, School of Medicine, Virginia Commonwealth University, Richmond, VA23298-0033
- School of Medicine, VCU Institute of Molecular Medicine, Virginia Commonwealth University, Richmond, VA23298-0033
| | - Kyoung Jae Won
- Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen N2200, Denmark
- Department of Computational Biomedicine, Cedars-Sinai Medical Center, Los Angeles, CA90069
| |
Collapse
|
2
|
Ruiz-Hernández G, Scaglione C, Delgado-Bolton RC, Gutiérrez-García A, Madero L, Jiménez-Vicioso A, Carreras-Delgado JL. Hipercaptación esplénica secundaria a factor estimulador de colonias granulocitarias (G-CSF) en el estudio PET-FDG. ACTA ACUST UNITED AC 2004; 23:124-6. [PMID: 15000944 DOI: 10.1016/s0212-6982(04)72267-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We present the case of an 11 year-old Caucasian girl who presented chest pain of 12 weeks evolution, with no other symptoms and a negative physical examination. Lactate dehydrogenase levels were increased to 797 U/l, whereas beta-2-microglobulin (BM2) levels were normal. The thoracic CT showed a bulky mediastinal mass that occupied the pretracheal, paratracheal and right prevascular regions. The gallium scintigraphy showed high uptake in the mediastinic region; the bone scintigraphy was negative. Biopsy of the mediastinal mass revealed the presence of diffuse large B-cell non-Hodgkin's lymphoma. Treatment included 4 cycles of chemotherapy followed by 7 days of subcutaneous granulocyte colony-stimulating factor (G-CSF, Lenogastrim) at a dose of 5 mg/Kg/day. Following treatment, a CT scan was performed to evaluate response, finding a calcification of the mass without significant reduction of the overall size. Because CT was inconclusive in the assessment of response to therapy, a 18F-FDG PET scan was performed. The 18F-FDG PET scan did not show any pathological uptake in the mediastinum but revealed a splenic and bone marrow diffusely increased 18F-FDG uptake. The differential diagnosis included a secondary effect induced by G-CSF therapy as one of the main possibilities, but other possibilities such as a malignant infiltration by lymphoma could not be discarded. Therefore, a second 18F-FDG PET scan was performed 3 months later. This study showed no pathological findings, with a normal 18F-FDG uptake in the spleen and bone marrow. Thus, the benign and reactive nature of the splenic and bone marrow 18F-FDG increased uptake found in the previous study was confirmed. We consider that the stimulating effect that G-CSF therapy has on the spleen and bone marrow must be taken into account when performing a 18F-FDG PET scan, as it can be an important source of false-positive results.
Collapse
|