Evidence map›Paper›PMID 34097133›Full record

ArticleAMB Express2021

CRISPR/Cas9-induced β-carotene hydroxylase mutation in Dunaliella salina CCAP19/18.

Lina Hu, Shuying Feng, Gaofeng Liang, Jingxia Du, Aifang Li, Chunling Niu

Open access · goldAbstract read
In one paragraph

Article in AMB Express, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.9field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 54 citations in OpenAlex.

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  7. Pharmaceutics · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Lina Hu *School of Basic Medical Sciences, Henan University of Science and Technology, No. 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.
Shuying Feng *School of Basic Medical Sciences, Henan University of Science and Technology, No. 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China. fshy001@haust.edu.cn.ORCID http://orcid.org/0000-0002-4771-2908
Gaofeng LiangSchool of Basic Medical Sciences, Henan University of Science and Technology, No. 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.
Jingxia DuSchool of Basic Medical Sciences, Henan University of Science and Technology, No. 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.
Aifang LiAcademy of Chinese Medicine Sciences, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China.
Chunling NiuMedical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China.
Henan University of Science and Technology · CNFirst Affiliated Hospital of Henan University · CN

Funding

National Natural Science Foundation of China U1804112, 31571289the Zhongjing Core Scholar's Research Initial Fund of Henan University of Chinese Medicine 00104311-2020-1
6 · The paper itself

Abstract

Dunaliella salina (D. salina) has been exploited as a novel expression system for the field of genetic engineering. However, owing to the low or inconsistent expression of target proteins, it has been greatly restricted to practical production of recombinant proteins. Since the accurate gene editing function of clustered regularly interspaced short palindromic repeat (CRISPR)/Cas system, β-carotene hydroxylase gene was chosen as an example to explore D. salina application with the purpose of improving expression level of foreign genes. In this paper, based on pKSE401 backbone, three CRISPR/Cas9 binary vectors were constructed to targeting exon 1 and 3 of the β-carotene hydroxylase of D. salina CCAP19/18 (Dschyb). D. salina mutants were obtained by salt gradient transformation method, and the expression of Dschyb gene were identified through real-time fluorescent quantitative PCR. Moreover, carotenoids content was analyzed by high-performance liquid chromatography at different time points after high intensity treatment. Compared with wild type strains, the β-carotene levels of mutants showed a significant increase, nearly up to 1.4 μg/ml, and the levels of zeaxanthin decreased to various degrees in mutants. All the results provide a compelling evidence for targeted gene editing in D. salina. This study gave a first successful gene editing of D. salina which has a very important practical significance for increasing carotene yield and meeting realistic industry demand. Furthermore, it provides an approach to overcome the current obstacles of D. salina, and then gives a strong tool to facilitates the development and application of D. salina system.

Indexed as

CRISPR/Cas9D. salinaKnockoutMutantβ-carotene hydroxylase

Identifiers

PMID34097133
PMCPMC8185118
OpenAlexW3166471348

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.