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Romero-Gutierrez T, Peguero-Sanchez E, Cevallos MA, Batista CVF, Ortiz E, Possani LD. A Deeper Examination of Thorellius atrox Scorpion Venom Components with Omic Techonologies. Toxins (Basel) 2017; 9:E399. [PMID: 29231872 PMCID: PMC5744119 DOI: 10.3390/toxins9120399] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 12/07/2017] [Accepted: 12/08/2017] [Indexed: 02/02/2023] Open
Abstract
This communication reports a further examination of venom gland transcripts and venom composition of the Mexican scorpion Thorellius atrox using RNA-seq and tandem mass spectrometry. The RNA-seq, which was performed with the Illumina protocol, yielded more than 20,000 assembled transcripts. Following a database search and annotation strategy, 160 transcripts were identified, potentially coding for venom components. A novel sequence was identified that potentially codes for a peptide with similarity to spider ω-agatoxins, which act on voltage-gated calcium channels, not known before to exist in scorpion venoms. Analogous transcripts were found in other scorpion species. They could represent members of a new scorpion toxin family, here named omegascorpins. The mass fingerprint by LC-MS identified 135 individual venom components, five of which matched with the theoretical masses of putative peptides translated from the transcriptome. The LC-MS/MS de novo sequencing allowed to reconstruct and identify 42 proteins encoded by assembled transcripts, thus validating the transcriptome analysis. Earlier studies conducted with this scorpion venom permitted the identification of only twenty putative venom components. The present work performed with more powerful and modern omic technologies demonstrates the capacity of accomplishing a deeper characterization of scorpion venom components and the identification of novel molecules with potential applications in biomedicine and the study of ion channel physiology.
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Affiliation(s)
- Teresa Romero-Gutierrez
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Apartado Postal 510-3, Cuernavaca CP: 62210, Morelos, Mexico.
| | - Esteban Peguero-Sanchez
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Apartado Postal 510-3, Cuernavaca CP: 62210, Morelos, Mexico.
| | - Miguel A Cevallos
- Programa de Genómica Evolutiva, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Apartado Postal 510-3, Cuernavaca CP: 62210, Morelos, Mexico.
| | - Cesar V F Batista
- Laboratorio Universitario de Proteómica, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Apartado Postal 510-3, Cuernavaca CP: 62210, Morelos, Mexico.
| | - Ernesto Ortiz
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Apartado Postal 510-3, Cuernavaca CP: 62210, Morelos, Mexico.
| | - Lourival D Possani
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Apartado Postal 510-3, Cuernavaca CP: 62210, Morelos, Mexico.
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Updating knowledge on new medically important scorpion species in Mexico. Toxicon 2017; 138:130-137. [DOI: 10.1016/j.toxicon.2017.08.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 08/18/2017] [Accepted: 08/24/2017] [Indexed: 01/01/2023]
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Santibáñez-López CE, González-Santillán E. A new species of Diplocentrus (Scorpiones: Diplocentridae) with punctate pedipalp surfaces, a diagnostic character within the "mexicanus" group. C R Biol 2017; 340:279-286. [PMID: 28457601 DOI: 10.1016/j.crvi.2017.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 02/21/2017] [Accepted: 03/18/2017] [Indexed: 11/16/2022]
Abstract
Diplocentrus duende n. sp. is described based on adult males collected from a locality in the Tehuacán-Cuicatlán Valley, Mexico. This species has punctate pedipalp surfaces, a condition present only in four other species of this specious genus. As suggested here, this condition has evolved independently in these species within the "mexicanus" group of Diplocentrus from the rest of the diplocentrids.
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Affiliation(s)
- Carlos E Santibáñez-López
- Department of Zoology, University of Wisconsin-Madison, 430 Lincoln Drive, 438 Birdge Hall, Madison, WI 5376, USA.
| | - Edmundo González-Santillán
- Laboratorio Nacional de Genómica para la Biodiversidad, Centro de Investigaciones y de Estudios Avanzados del Instituto Politécnico Nacional, Km 9.6 Libramiento Norte Carretera León, 36821 Irapuato, Guanajuato, Mexico; Laboratorio de Aracnología, Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Coyoacán, 04510 Mexico City, Mexico
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Vargas-Jaimes L, Xiao L, Zhang J, Possani LD, Valdivia HH, Quintero-Hernández V. Recombinant expression of Intrepicalcin from the scorpion Vaejovis intrepidus and its effect on skeletal ryanodine receptors. Biochim Biophys Acta Gen Subj 2017; 1861:936-946. [PMID: 28159581 DOI: 10.1016/j.bbagen.2017.01.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 01/22/2017] [Accepted: 01/30/2017] [Indexed: 01/02/2023]
Abstract
BACKGROUND Scorpion venoms contain toxins that modulate ionic channels, among which are the calcins, a small group of short, basic peptides with an Inhibitor Cystine Knot (ICK) motif that target calcium release channels/ryanodine receptors (RyRs) with high affinity and selectivity. Here we describe the heterologous expression of Intrepicalcin, identified by transcriptomic analysis of venomous glands from Vaejovis intrepidus. METHODS Recombinant Intrepicalcin was obtained in Escherichia coli BL21-DE3 (periplasm) by fusing the Intrepicalcin gene to sequences coding for signal-peptide, thioredoxin, His-tag and enterokinase cleavage site. RESULTS [3H]Ryanodine binding, used as a functional index of RyR activity, revealed that recombinant Intrepicalcin activates skeletal RyR (RyR1) dose-dependently with Kd=17.4±4.0nM. Intrepicalcin significantly augments the bell-shaped [Ca2+]-[3H]ryanodine binding curve at all [Ca2+] ranges, as is characteristic of the calcins. In single channel recordings, Intrepicalcin induces the appearance of a subconductance state in RyR1 with a fractional value ∼55% of the full conductance state, very close to that of Vejocalcin. Furthermore, Intrepicalcin stimulates Ca2+ release at an initial dose=45.3±2.5nM, and depletes ~50% of Ca2+ load from skeletal sarcoplasmic reticulum vesicles. CONCLUSIONS We conclude that active recombinant Intrepicalcin was successfully obtained without the need of manual oxidation, enabling it to target RyR1s with high affinity. GENERAL SIGNIFICANCE This is the first calcin heterologously expressed in the periplasma of Escherichia coli BL21-DE3, shown to be pharmacologically effective, thus paving the way for the generation of Intrepicalcin variants that are required for structure-function relationship studies of calcins and RyRs.
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Affiliation(s)
- Leonel Vargas-Jaimes
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62271, México
| | - Liang Xiao
- Department of Marine Biotechnology, Faculty of Naval Medicine, Second Military Medical University, Shanghai, 200433, China.,Center for Arrhythmia Research, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jing Zhang
- Department of Marine Biotechnology, Faculty of Naval Medicine, Second Military Medical University, Shanghai, 200433, China
| | - Lourival D Possani
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62271, México
| | - Héctor H Valdivia
- Center for Arrhythmia Research, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Verónica Quintero-Hernández
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62271, México.,CONACYT- Laboratorio de Ecología Molecular Microbiana, Centro de Investigaciones en Ciencias Microbiológicas-Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, C.P. 72570, Puebla, México
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Olamendi-Portugal T, Restano-Cassulini R, Riaño-Umbarila L, Becerril B, Possani LD. Functional and immuno-reactive characterization of a previously undescribed peptide from the venom of the scorpion Centruroides limpidus. Peptides 2017; 87:34-40. [PMID: 27871874 DOI: 10.1016/j.peptides.2016.11.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 11/11/2016] [Accepted: 11/14/2016] [Indexed: 11/23/2022]
Abstract
A previously undescribed toxic peptide named Cl13 was purified from the venom of the Mexican scorpion Centruroides limpidus. It contains 66 amino acid residues, including four disulfide bonds. The physiological effects assayed in 7 different subtypes of voltage gated Na+-channels, showed that it belongs to the β-scorpion toxin type. The most notorious effects were observed in subtypes Nav1.4, Nav1.5 and Nav1.6. Although having important sequence similarities with two other lethal toxins from this scorpion species (Cll1m and Cll2), the recently developed single chain antibody fragments (scFv) of human origin were not capable of protecting against Cl13. At the amino acid sequence level, in 3 stretches of peptide Cl13 (positions 7-9, 30-38 and 62-66) some differences with respect to other similar toxins are observed. Some of these differences coincide with contact points with the human antibody fragments.
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Affiliation(s)
- Timoteo Olamendi-Portugal
- Departamento de Medicina Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad, 2001, Apartado Postal 510.3 Cuernavaca, Morelos, 62210, Mexico
| | - Rita Restano-Cassulini
- Departamento de Medicina Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad, 2001, Apartado Postal 510.3 Cuernavaca, Morelos, 62210, Mexico
| | - Lidia Riaño-Umbarila
- CONACYT, Instituto de Biotecnología,Universidad Nacional Autónoma de México, Mexico
| | - Baltazar Becerril
- Departamento de Medicina Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad, 2001, Apartado Postal 510.3 Cuernavaca, Morelos, 62210, Mexico
| | - Lourival D Possani
- Departamento de Medicina Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad, 2001, Apartado Postal 510.3 Cuernavaca, Morelos, 62210, Mexico.
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Venom Gland Transcriptomic and Proteomic Analyses of the Enigmatic Scorpion Superstitionia donensis (Scorpiones: Superstitioniidae), with Insights on the Evolution of Its Venom Components. Toxins (Basel) 2016; 8:toxins8120367. [PMID: 27941686 PMCID: PMC5198561 DOI: 10.3390/toxins8120367] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 11/28/2016] [Accepted: 12/01/2016] [Indexed: 11/28/2022] Open
Abstract
Venom gland transcriptomic and proteomic analyses have improved our knowledge on the diversity of the heterogeneous components present in scorpion venoms. However, most of these studies have focused on species from the family Buthidae. To gain insights into the molecular diversity of the venom components of scorpions belonging to the family Superstitioniidae, one of the neglected scorpion families, we performed a transcriptomic and proteomic analyses for the species Superstitionia donensis. The total mRNA extracted from the venom glands of two specimens was subjected to massive sequencing by the Illumina protocol, and a total of 219,073 transcripts were generated. We annotated 135 transcripts putatively coding for peptides with identity to known venom components available from different protein databases. Fresh venom collected by electrostimulation was analyzed by LC-MS/MS allowing the identification of 26 distinct components with sequences matching counterparts from the transcriptomic analysis. In addition, the phylogenetic affinities of the found putative calcins, scorpines, La1-like peptides and potassium channel κ toxins were analyzed. The first three components are often reported as ubiquitous in the venom of different families of scorpions. Our results suggest that, at least calcins and scorpines, could be used as molecular markers in phylogenetic studies of scorpion venoms.
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Flores-Solis D, Toledano Y, Rodríguez-Lima O, Cano-Sánchez P, Ramírez-Cordero BE, Landa A, Rodríguez de la Vega RC, del Rio-Portilla F. Solution structure and antiparasitic activity of scorpine-like peptides fromHoffmannihadrurus gertschi. FEBS Lett 2016; 590:2286-96. [DOI: 10.1002/1873-3468.12255] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 06/06/2016] [Accepted: 06/07/2016] [Indexed: 11/06/2022]
Affiliation(s)
- David Flores-Solis
- Departamento de Química de Biomacromoléculas; Instituto de Química; Universidad Nacional Autónoma de México, CU; Ciudad de México México
| | - Yanis Toledano
- Departamento de Química de Biomacromoléculas; Instituto de Química; Universidad Nacional Autónoma de México, CU; Ciudad de México México
- Departamento de Química Inorgánica y Nuclear; Facultad de Química; Universidad Nacional Autónoma de México, CU; Ciudad de México México
| | - Oscar Rodríguez-Lima
- Departamento de Microbiología y Parasitología; Facultad de Medicina; Universidad Nacional Autónoma de México, CU; Ciudad de México México
| | - Patricia Cano-Sánchez
- Departamento de Química de Biomacromoléculas; Instituto de Química; Universidad Nacional Autónoma de México, CU; Ciudad de México México
| | - Belen Ernestina Ramírez-Cordero
- División de Neurociencias; Departamento de Neuropatología Molecular; Instituto de Fisiología Celular; Universidad Nacional Autónoma de México, CU; Ciudad de México México
| | - Abraham Landa
- Departamento de Microbiología y Parasitología; Facultad de Medicina; Universidad Nacional Autónoma de México, CU; Ciudad de México México
| | | | - Federico del Rio-Portilla
- Departamento de Química de Biomacromoléculas; Instituto de Química; Universidad Nacional Autónoma de México, CU; Ciudad de México México
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Valdez-Velazquéz LL, Romero-Gutierrez MT, Delgado-Enciso I, Dobrovinskaya O, Melnikov V, Quintero-Hernández V, Ceballos-Magaña SG, Gaitan-Hinojosa MA, Coronas FI, Puebla-Perez AM, Zamudio F, De la Cruz-García I, Vázquez-Vuelvas OF, Soriano-Hernandez AD, Possani LD. Comprehensive analysis of venom from the scorpion Centruroides tecomanus reveals compounds with antimicrobial, cytotoxic, and insecticidal activities. Toxicon 2016; 118:95-103. [PMID: 27130039 DOI: 10.1016/j.toxicon.2016.04.046] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/06/2016] [Accepted: 04/26/2016] [Indexed: 10/21/2022]
Abstract
Centruroides tecomanus is a medically important scorpion of the state of Colima (Mexico). This communication reports the identification of venom components of this scorpion with biological activity over insects/crickets (Acheta domestica), crustaceans/fresh water shrimps (Cambarellus montezumae), and mammalians/mice (Mus musculus, strain CD1). It also describes the pharmacological effects on cell lines in culture (L5178Y cells, HeLa cells, HuTu cells and Jurkat E6-1 cells), as well as on several types of bacteria (see below). The soluble venom of this scorpion was fractionated by high-performance liquid chromatography (HPLC) and collected separately in twelve independent fractions collected over 60 min run (5 min time apart each other). The HPLC components of fraction VII were lethal to all three species used for assay. The IVth fraction had a toxic effect on freshwater shrimps. In this species, fractions VI, VII and VIII were all lethal. For crickets, fractions V and VI were toxic and fraction VII was lethal. In mouse, the lethal components were found in fraction VII, whereas fraction VIII was toxic, but not lethal, at the doses assayed. The molecular weight of peptides from the various group of fractions were identified by mass spectrometry determination. Components lethal to mice showed molecular weights from 7013 to 7487 Da. Two peptides were obtained in homogeneous form and shown to be lethal to the three species of animal used for assay. The soluble venom tested on L5178Y cell line survival was shown to be cytotoxic, at 10-100 μg/mL concentration, when compared to control murine splenocytes (p = 0.007). The soluble venom applied to Hela, Hutu and Jurkat cell lines did not show cytotoxic effects at these concentrations. On the contrary, it seems to have a proliferative effect. However the HPLC fractions I, III, VI and XII do have a cytotoxic effect on Jurkat E06-1 cells in culture at 200 μg/mL concentration. The antimicrobial activity of the venom fractions on Staphylococcus aureus (gram-positive), Escherichia coli, Pseudomonas aeruginosa y Salmonella spp (gram-negative) was measured, using the liquid inhibition growth system. The four strains of bacteria used were susceptible to fractions III and IV, affecting all four bacterial strains at concentrations below 5 μg/mL.
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Affiliation(s)
- L L Valdez-Velazquéz
- Facultad de Ciencias Químicas, Universidad de Colima, Kilometro 9 Carretera Colima-Coquimatlan, Código Postal 28400, Coquimatlan, Colima, Mexico; Facultad de Medicina, Universidad de Colima, Av. Universidad 333, Colonia las Viboras, Código Postal 28040, Colima, Mexico.
| | - M T Romero-Gutierrez
- Facultad de Medicina, Universidad de Colima, Av. Universidad 333, Colonia las Viboras, Código Postal 28040, Colima, Mexico
| | - I Delgado-Enciso
- Facultad de Ciencias Químicas, Universidad de Colima, Kilometro 9 Carretera Colima-Coquimatlan, Código Postal 28400, Coquimatlan, Colima, Mexico; Facultad de Medicina, Universidad de Colima, Av. Universidad 333, Colonia las Viboras, Código Postal 28040, Colima, Mexico
| | - O Dobrovinskaya
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, Av. 25 de Julio 965, Código Postal 28045, Colima, Mexico
| | - V Melnikov
- Facultad de Medicina, Universidad de Colima, Av. Universidad 333, Colonia las Viboras, Código Postal 28040, Colima, Mexico
| | - V Quintero-Hernández
- CONACYT Research Fellow - Laboratorio de Ecología Molecular Microbiana, Centro de Investigaciones en Ciencias Microbiológicas-Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Código Postal 72570, Puebla, Mexico
| | - S G Ceballos-Magaña
- Facultad de Ciencias, Universidad de Colima, c/Bernal Díaz del Castillo 340, Código Postal 28045, Colima, Mexico
| | - M A Gaitan-Hinojosa
- Facultad de Ciencias Químicas, Universidad de Colima, Kilometro 9 Carretera Colima-Coquimatlan, Código Postal 28400, Coquimatlan, Colima, Mexico
| | - F I Coronas
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Colonia Chamilpa, Apartado Postal 510-3, Cuernavaca, Morelos, Mexico
| | - A M Puebla-Perez
- Universidad de Guadalajara, Centro Universitario de Ciencias Exactas, Blvd. Gral. Marcelino García Barragán 1421, Olímpica, Apartado Postal 44430, Guadalajara, Jalisco, Mexico
| | - F Zamudio
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Colonia Chamilpa, Apartado Postal 510-3, Cuernavaca, Morelos, Mexico
| | - I De la Cruz-García
- Facultad de Ciencias Químicas, Universidad de Colima, Kilometro 9 Carretera Colima-Coquimatlan, Código Postal 28400, Coquimatlan, Colima, Mexico
| | - O F Vázquez-Vuelvas
- Facultad de Ciencias Químicas, Universidad de Colima, Kilometro 9 Carretera Colima-Coquimatlan, Código Postal 28400, Coquimatlan, Colima, Mexico
| | - A D Soriano-Hernandez
- Facultad de Medicina, Universidad de Colima, Av. Universidad 333, Colonia las Viboras, Código Postal 28040, Colima, Mexico
| | - L D Possani
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Colonia Chamilpa, Apartado Postal 510-3, Cuernavaca, Morelos, Mexico
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Structure-Activity Relationship of Chlorotoxin-Like Peptides. Toxins (Basel) 2016; 8:36. [PMID: 26848686 PMCID: PMC4773789 DOI: 10.3390/toxins8020036] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 01/18/2016] [Accepted: 01/19/2016] [Indexed: 12/30/2022] Open
Abstract
Animal venom (e.g., scorpion) is a rich source of various protein and peptide toxins with diverse physio-/pharmaco-logical activities, which generally exert their action via target-specific modulation of different ion channel functions. Scorpion venoms are among the most widely-known source of peptidyl neurotoxins used for callipering different ion channels, such as; Na⁺, K⁺, Ca⁺, Cl(-), etc. A new peptide of the chlorotoxin family (i.e., Bs-Tx7) has been isolated, sequenced and synthesized from scorpion Buthus sindicus (family Buthidae) venom. This peptide demonstrates 66% with chlorotoxin (ClTx) and 82% with CFTR channel inhibitor (GaTx1) sequence identities reported from Leiurus quinquestriatus hebraeus venom. The toxin has a molecular mass of 3821 Da and possesses four intra-chain disulphide bonds. Amino acid sequence analysis of Bs-Tx7 revealed the presence of a scissile peptide bond (i.e., Gly-Ile) for human MMP2, whose activity is increased in the case of tumour malignancy. The effect of hMMP2 on Bs-Tx7, or vice versa, observed using the FRET peptide substrate with methoxycoumarin (Mca)/dinitrophenyl (Dnp) as fluorophore/quencher, designed and synthesized to obtain the lowest Km value for this substrate, showed approximately a 60% increase in the activity of hMMP2 upon incubation of Bs-Tx7 with the enzyme at a micromolar concentration (4 µM), indicating the importance of this toxin in diseases associated with decreased MMP2 activity.
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