Abstract
AbstractBACKGROUNDInsects cannot synthesize sterols and must acquire them from food. The mechanisms underlying how insects uptake dietary sterols are largely unknown except that NPC1b, an integral membrane protein, has been shown to be responsible for dietary cholesterol uptake in Drosophila melanogaster. However, whether NPC1b orthologs in other insect species, particularly the economically important pests, function similarly remains to be determined.RESULTSIn this study, we characterized the function of NPC1b in Helicoverpa armigera, a global pest that causes severe yield losses to many important crops. Limiting dietary cholesterol uptake to insects significantly inhibited food ingestion and weight gain. Compared to the wild‐type H. armigera, the CRISPR/Cas9‐edited NPC1b mutant larvae were incapable of getting adequate cholesterol and died in their early life stage. Gene expression profile and in situ hybridization analyses indicated that NPC1b was mainly expressed in the midgut where dietary cholesterol was absorbed. Expression of NPC1b was also correlated with the feeding life stages and was especially upregulated during early larval instars. Protein‐ligand docking and sequence similarity analyses further demonstrated that NPC1b proteins of lepidopteran insects shared a relatively conserved cholesterol binding region, NPC1b_NTD, which, however, was highly divergent from bees‐derived sequences.CONCLUSIONNPC1b was crucial for dietary cholesterol uptake and growth of H. armigera, and therefore could serve as an insecticide target for the development of a novel pest‐management approach to control this economically significant insect pest with little off‐target effect on bees and sterol‐autotrophic animals. © 2020 Society of Chemical Industry
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References
51
[8]
Insect Sterol Nutrition: Physiological Mechanisms, Ecology, and Applications

Xiangfeng Jing, Spencer T. Behmer

Annual Review of Entomology 10.1146/annurev-ento-011019-025017
[15]
Larson RT "The biological activity of alpha‐Mangostin, a larvicidal botanic mosquito sterol carrier protein‐2 inhibitor" J Med Entomol (2010)
[24]
Niemann-Pick C1 Like 1 Protein Is Critical for Intestinal Cholesterol Absorption

Scott W. Altmann, Harry R. Davis, Li-ji Zhu et al.

Science 10.1126/science.1093131
[29]
Jing X (2011)
[35]
AutoDock4 and AutoDockTools4: Automated docking with selective receptor flexibility

Garrett M. Morris, Ruth Huey, William Lindstrom et al.

Journal of Computational Chemistry 10.1002/jcc.21256
[37]
Structure of N-Terminal Domain of NPC1 Reveals Distinct Subdomains for Binding and Transfer of Cholesterol

Hyock Joo Kwon, Lina Abi-Mosleh, Michael L. Wang et al.

Cell 10.1016/j.cell.2009.03.049
[40]
Multiplex Genome Engineering Using CRISPR/Cas Systems

Le Cong, F. Ann Ran, David Cox et al.

Science 10.1126/science.1231143
[42]
The CRISPR/Cas System mediates efficient genome engineering in Bombyx mori

Yueqiang Wang, Zhiqian Li, Jun Xu et al.

Cell Research 10.1038/cr.2013.146
[43]
ZFN, TALEN, and CRISPR/Cas-based methods for genome engineering

Thomas Gaj, Charles A. Gersbach, Carlos F. Barbas

Trends in Biotechnology 10.1016/j.tibtech.2013.04.004
[50]
Absorption and tissue distribution of cholesterol in Manduca sexta

Zeina E. Jouni, Jorge Zamora, Michael A. Wells

Archives of Insect Biochemistry and Physiology 10.1002/arch.10017

Showing 50 of 51 references

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Details
Published
Mar 03, 2020
Vol/Issue
76(6)
Pages
2233-2242
License
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Authors
Funding
National Natural Science Foundation of China Award: 31672369
Cite This Article
Jin‐Cheng Zheng, Xiao‐Rong Yue, Wen‐Qing Kuang, et al. (2020). NPC1b as a novel target in controlling the cotton bollworm, Helicoverpa armigera. Pest Management Science, 76(6), 2233-2242. https://doi.org/10.1002/ps.5761
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