Title
Analysis of NGS data from Peruvian Loxosceles laeta spider venom gland reveals toxin diversity
Date Issued
01 September 2022
Access level
metadata only access
Resource Type
journal article
Author(s)
Medina-Santos R.
Fernandes Costa T.G.
Silva de Assis T.C.
Kalapothakis Y.
de Almeida Lima S.
do Carmo A.O.
Gonzalez-Kozlova E.E.
Kalapothakis E.
Guerra-Duarte C.
Federal University of Minas Gerais
Publisher(s)
Elsevier Inc.
Abstract
Accidents involving spiders from the genus Loxosceles cause medical emergencies in several countries of South America. The species Loxosceles laeta is ubiquitously present in Peru and is responsible for severe accidents in this country. To further characterize L. laeta venom components and to unveil possible variations in the Peruvian population, we provide an overview of the toxins-related transcripts present in the venom gland of Peruvian L. laeta. A dataset from a cDNA library previously sequenced by MiSeq sequencer (Illumina) was re-analyzed and the obtained data was compared with available sequences from Loxosceles toxins. Phospholipase-D represent the majority (69,28 %) of the transcripts related to venom toxins, followed by metalloproteases (20,72 %), sicaritoxins (6,03 %), serine-proteases (2,28 %), hyaluronidases (1,80 %) and Translationally Controlled Tumor Protein (TCTP) (0,56 %). New sequences of phospholipases D,sicaritoxins, hyaluronidase, TCTP and serine proteinases were described. Differences between the here-described toxin sequences and others, previously identified in venom glands from other spiders, were visualized upon sequence alignments. In addition, an in vitro hyaluronidase activity assay was also performed to complement comparisons between Peruvian and Brazilian L. laeta venom enzymatic activities, revealing a superior activity in the venom from Brazilian specimens. These new data provide a molecular basis that can help to explain the difference in toxicity among L. laeta venoms from different countries in South America.
Volume
43
Language
English
OCDE Knowledge area
Toxicología
Scopus EID
2-s2.0-85135409947
PubMed ID
Source
Comparative Biochemistry and Physiology - Part D: Genomics and Proteomics
ISSN of the container
1744117X
Sponsor(s)
This research was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil (CNPq) (Process: 406163/2018-9), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Brazil - CAPES (Program COFECUB Process: 58405288881.191812/2018-01) and by FONDECYT-BM, Perú (Program INCORPORACIÓN DE INVESTIGADORES E038-2019-01, Registry Number: 64007). This research was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico , Brazil (CNPq) (Process: 406163/2018-9 ), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior , Brazil - CAPES (Program COFECUB Process: 58405288881.191812/2018-01 ) and by FONDECYT - BM , Perú (Program INCORPORACIÓN DE INVESTIGADORES E038-2019-01, Registry Number: 64007).
Sources of information: Directorio de Producción Científica Scopus