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Lama glama

ABSTRACT: VHH screening

PROVIDER: PRJDB7510 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR222092_1.fastq.gz	Fastqsanger.gz
	DRR222092_2.fastq.gz	Fastqsanger.gz
	DRR222093_1.fastq.gz	Fastqsanger.gz
	DRR222093_2.fastq.gz	Fastqsanger.gz
	DRR222094_1.fastq.gz	Fastqsanger.gz

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Project description:VHH

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Single-cell transcriptomic sequencing identifies the genes related to polyfunctionality of persistent CAR-T cells targeting B7-H3 (CD276) in mice bearing human neuroblastoma xenografts

Project description:To understand the molecular determinants of B12(VHH)-CAR-T polyfunctionality, we simultaneously measured the protein and RNA expression levels of 95 single CD4+ B12(VHH)-CAR-T cells isolated from IMR5 tumor-bearing mouse and re-stimulated with IMR5 tumor cells in vitro. We identified two CAR-T clusters, low polyfunctionality and high polyfunctionality subsets, in a 2D t-SNE plot. Moreover, our single-cell mRNA expression profiling revealed 32 genes that displayed statistically significant, concordant differences between the two cell subsets.

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Single-cell 5' RNA sequencing of Bactrian camel PBMCs

Project description:Camelids are capable of producing both conventional tetrameric antibodies (Abs) and dimeric heavy-chain antibodies (HCAbs). While B cells generating these two types of Abs exhibit distinct B-cell receptors (BCRs), it remains unclear whether these two B cell populations differ in their phenotypes and developmental processes. Here, we collected eight PBMC samples before and after immunization from four Bactrian camels and conducted single-cell 5’ RNA sequencing. We characterized the functional subtypes and differentiation trajectories of circulating B cells in camels, including native B cells, memory B cells, intermediate B cells, atypical B cells, and plasma cells. Additionally, we reconstructed single-cell BCR sequences and revealed the IGHV and IGHC gene types. We found that B cells with variable genes of HACbs (VHH) were widely present in various functional subtypes and showed highly overlapping differentiation trajectories to B cells with variable genes of conventional Abs (VH). After immunization, the transcriptional changes in VHH+ and VH+ B cells were also largely consistent. Our study not only elucidates the cellular context of HCAb production in camels, but also lays the foundation for the development of single B cell-based nanobody screening.

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Project description:Alpaca VHH library

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Extrafine triple therapy delays COPD clinically important deterioration vs ICS/LABA, LAMA, or LABA/LAMA.

Project description:BackgroundCurrent pharmacological therapies for COPD improve quality of life and symptoms and reduce exacerbations. Given the progressive nature of COPD, it is arguably more important to understand whether the available therapies are able to delay clinical deterioration; the concept of "clinically important deterioration" (CID) has therefore been developed. We evaluated the efficacy of the single-inhaler triple combination beclometasone dipropionate, formoterol fumarate, and glycopyrronium (BDP/FF/G), using data from three large 1-year studies.MethodsThe studies compared BDP/FF/G to BDP/FF (TRILOGY), tiotropium (TRINITY), and indacaterol/glycopyrronium (IND/GLY; TRIBUTE). All studies recruited patients with symptomatic COPD, FEV1 <50%, and an exacerbation history. We measured the time to first CID and to sustained CID, an endpoint combining FEV1, St George's Respiratory Questionnaire (SGRQ), moderate-to-severe exacerbations, and death. The time to first CID was based on the first occurrence of any of the following: a decrease of ≥100 mL from baseline in FEV1, an increase of ≥4 units from baseline in SGRQ total score, the occurrence of a moderate/severe COPD exacerbation, or death. The time to sustained CID was defined as: a CID in FEV1 and/or SGRQ total score maintained at all subsequent visits, an exacerbation, or death.ResultsExtrafine BDP/FF/G significantly extended the time to first CID vs BDP/FF (HR 0.61, P<0.001), tiotropium (0.72, P<0.001), and IND/GLY (0.82, P<0.001), and significantly extended the time to sustained CID vs BDP/FF (HR 0.64, P<0.001) and tiotropium (0.80, P<0.001), with a numerical extension vs IND/GLY.ConclusionIn patients with symptomatic COPD, FEV1 <50%, and an exacerbation history, extrafine BDP/FF/G delayed disease deterioration compared with BDP/FF, tiotropium, and IND/GLY.Trial registrationThe studies are registered in ClinicalTrials.gov: TRILOGY, NCT01917331; TRINITY, NCT01911364; TRIBUTE, NCT02579850.

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